Toyota Prius: Front Power Seat Control System (w/ Memory)

Toyota Prius (XW60) 2023-2025 Service Manual / Vehicle Interior / Seat / Front Power Seat Control System (w/ Memory)

Precaution
Parts Location
System Diagram
How To Proceed With Troubleshooting
Operation Check
Registration
Customize Parameters
Utility
Problem Symptoms Table
Terminals Of Ecu
Data List / Active Test
Diagnostic Trouble Code Chart
Slide Sensor (Motor) Component Internal Failure (B265096)
Sensor Power Supply Circuit Short to Ground or Open (B265814)
Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014087,U016387,U110787,U114F87)
Front Power Seat does not Operate with Front Power Seat Switch
One or more Power Seat Motors do not Operate
Power Seat Position is not Memorized
Power Seat does not Return to Memorized Position
Wireless Transmitter Memory Function does not Operate
Wireless-linked Return Function does not Operate
Power Seat Power Easy Access System Function does not Operate

Precaution

PRECAUTION

PRECAUTIONS FOR DISCONNECTING CABLE FROM NEGATIVE (-) AUXILIARY BATTERY TERMINAL

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click here

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

FRONT POWER SEAT CONTROL SYSTEM (w/ Memory) PRECAUTIONS

NOTICE:

Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).

Click here

Parts Location

PARTS LOCATION

ILLUSTRATION

*1	HYBRID Toyota Prius Vehicle CONTROL ECU	*2	MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
*3	DLC3	*4	SEAT MEMORY SWITCH
*5	MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - DOOR CONTROL SWITCH	*6	CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
*7	POWER DISTRIBUTION BOX ASSEMBLY - P/SEAT D FUSE - ECU-DCC NO. 2 FUSE - ECU-IGR NO. 1 FUSE	-	-

ILLUSTRATION

*1	SLIDE MOTOR	*2	RECLINING MOTOR
*3	FRONT VERTICAL MOTOR (POWER SEAT TILT MOTOR ASSEMBLY LH)	*4	LIFTER MOTOR (POWER SEAT LIFTER MOTOR ASSEMBLY LH)
*5	UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH	*6	FRONT SEATBACK FRAME SUB-ASSEMBLY LH
*7	POSITION CONTROL ECU ASSEMBLY LH	*8	FRONT POWER SEAT SWITCH LH
*9	LUMBAR SUPPORT ADJUSTER ASSEMBLY LH	*10	FRONT SEAT INNER BELT ASSEMBLY LH

System Diagram

SYSTEM DIAGRAM

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the front power seat control system (w/ Memory).
*: Use the GTS.

PROCEDURE

1.	Toyota Prius Vehicle BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer to confirm the problem.

Click here

PRE-CHECK

(a) Measure the auxiliary battery voltage with the ignition switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

4.	INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check for CAN communication system DTCs.

for HEV Model: Click here

for PHEV Model: Click here

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output	B

GO TO CAN COMMUNICATION SYSTEM

for HEV Model: Click here

for PHEV Model: Click here

5.	INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the GTS, check for LIN communication system DTCs.

Result	Proceed to
LIN DTCs are not output	A
LIN DTCs are output	B

GO TO LIN COMMUNICATION SYSTEM

6.	CHECK FOR DTC*

(a) Clear the DTCs.

Body Electrical > Driver Seat > Clear DTCs

(b) Check for DTCs.

Body Electrical > Driver Seat > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

7.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

GO TO STEP 9

8.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here

(b) Data List / Active Test

Click here

(d) Inspection

9.	REPAIR OR REPLACE

10.	CONFIRMATION TEST

END

Operation Check

OPERATION CHECK

CHECK CUSTOMIZE PARAMETERS

NOTICE:

The interference prevention function stops the recall operation when the head restraint may contact the roof headlining during a recall operation.
Before performing an operation check, check that Customize Setting item "Auto Operation Interference Avoidance Function" for the front power seat system (with memory) is set to "OFF".
Click here
When Customize Setting item "Auto Operation Interference Avoidance Function" is set to "OFF", it is possible for the head restraint to contact the roof headlining.

CHECK POWER SEAT FUNCTION

(a) Check the basic functions.

*a	Slide Function
*b	Front Vertical Function
*c	Lifter Function
*d	Reclining Function
*e	Lumbar Support Adjustment Function (forward - back)

(1) Operate the power seat switches and check that the following seat functions operate properly:

Slide function
Front vertical function
Lifter function
Reclining function
Lumbar support adjustment function (forward - back)

CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION

HINT:

The SET, M1 and M2 seat memory switches are shown in the illustration.
The seat position will not be stored if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a memorizing operation has failed, release all of the switches. The seat memory function will not operate unless the switches are released.
The seat will not return to the memorized position if 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a restoring operation has failed, release all of the switches. The seat memory restoring function will not operate unless the switches are released.

(a) Turn the ignition switch to ON and check that the P position indicator is illuminated.

*a	M1 Switch
*b	M2 Switch
*c	SET Switch

(b) Move the seat to the foremost and uppermost positions using the front power seat switch LH.

(c) Check that a buzzer sounds for 0.5 seconds and the seat position is memorized when the M1 switch is pressed within 3 seconds of the SET switch being pressed or the M1 switch is pressed while the SET switch is being pressed.

(d) Move the seat out of the foremost and uppermost positions using the front power seat switch LH.

(e) Check that the buzzer sounds for 0.5 seconds and the seat position is memorized when the M2 switch is pressed within 3 seconds of the SET switch being pressed or the M2 switch is pressed while the SET switch is being pressed.

(f) Move the seat to the rearmost and lowermost positions using the front power seat switch LH.

(g) Check that the buzzer sounds for 0.1 seconds and the seat automatically moves into the foremost and uppermost positions (memorized positions) when the M1 switch is pressed.

(h) Check that the buzzer sounds for 0.1 seconds and the seat automatically moves out of the foremost and uppermost positions (memorized positions) when the M2 switch is pressed.

(i) Turn the ignition switch off and open the driver door. Check that the buzzer sounds for 0.1 seconds and the seat automatically moves to the memorized position by pressing the M1 or M2 switch within 180 seconds after the ignition switch is turned off.

(j) Turn the ignition switch off and close the driver door. Check that the buzzer sounds for 0.1 seconds and the seat automatically moves to the memorized position by pressing the M1 or M2 switch within 60 seconds after the ignition switch is turned off.

(k) Operate the front vertical function of the front power seat switch LH to tilt the seat down 3 times.

Within 10 seconds after operating the front vertical function of the front power seat switch LH, operate the lifter function of the front power seat switch LH and the reclining function of the front power seat switch LH to raise and recline the seat simultaneously. Hold both switches for 10 seconds to clear the memory.

HINT:

The buzzer sounds for 0.5 seconds when the memory is cleared.

CHECK MEMORY CALL FUNCTION

HINT:

Before checking the function, check that a memory call is registered.

Click here

(a) Automatic memory call function

(1) While carrying the electrical key transmitter sub-assembly, unlock the driver door using the entry unlock function or wireless unlock operation. Open the driver door and check that a buzzer sounds for 0.1 seconds and the driver seat moves to the memorized position.

CHECK MEMORY CALL EMERGENCY STOP FUNCTION

(a) While a memory call function is operating, check that performing one of the following will stop the memory call operation: 1) press the SET switch, M1 switch or M2 switch or 2) press the front power seat switch LH.

CHECK POWER SEAT POWER EASY ACCESS SYSTEM

HINT:

When troubleshooting a function, first make sure that the function is set to the default setting.
Click here
The power seat power easy access system may not operate and move the seat rearward if the seat is near the rearmost position.

(a) Move the driver seat to the foremost position using the front power seat switch LH.

(b) Perform either of the following and check that the driver seat moves rearward:

With the ignition switch off, the shift lever in P and at a Toyota Prius vehicle speed of less than 10 km/h, unfasten the driver seat seat belt.
With the shift lever in P, the driver seat seat belt unfastened and at a vehicle speed of less than 10 km/h, turn the ignition switch off.

With the ignition switch off, fasten the driver seat seat belt.
With the driver seat seat belt unfastened, turn the ignition switch from off to ACC or ON.

CHECK POWER SEAT MOTOR (SLIDE, FRONT VERTICAL, LIFTER AND RECLINING FUNCTIONS)

(a) Check the PTC operation inside the power seat motor.

NOTICE:

The inspection should be performed with the seat installed to the Toyota Prius vehicle.
Perform the 4 steps below to check the full range of motion for each power seat function.

HINT:

The resistance of the PTC thermistor increases when a switch of the front power seat switch LH is held down even after the seat has been moved to the farthest possible position in one direction. If the resistance increases beyond a specified level, the current is shut off to prevent a short circuit.

(1) Choose a power seat function. Operate a switch of the front power seat switch LH and move the seat to the farthest possible position in one direction. Keep the seat in that position for approximately 60 seconds.

(2) Operate the switch of the front power seat switch LH again and continue to try to move the seat in the same direction as in the previous step. Measure the time until the current is shut off (motor operation sound stops).

Standard:

4 to 90 seconds

(3) After the current is shut off, release the switch of the front power seat switch LH and wait for approximately 60 seconds.

(4) Operate a switch of the front power seat switch LH and move the seat in the opposite direction. Check that the motor operates.

CHECK FRONT LUMBAR SUPPORT MOTOR

(a) Check the PTC operation inside the front lumbar support motor (forward - back).

NOTICE:

The inspection should be performed with the seat installed to the Toyota Prius vehicle.

(1) Operate the front power seat switch LH and move the lumbar support to either the foremost or rearmost position. Keep the seat in that position for approximately 60 seconds.

(2) Operate the front power seat switch LH again and continue to try to move the lumbar support in the same direction as in the previous step. Measure the time until the current is shut off (motor operation sound will stop).

Standard:

4 to 90 seconds

(3) After the current is shut off, release the front power seat switch LH and wait for approximately 60 seconds.

(4) Operate the front power seat switch LH and move the lumbar support in the opposite direction. Check that the motor operates.

Registration

REGISTRATION

PROCEDURE

1. MEMORY CALL REGISTRATION

(a) Memory registration

NOTICE:

Do not bring 2 or more electrical key transmitter sub-assemblies into the cabin.
Do not press and hold the door control switch on the multiplex network master switch assembly for 3 seconds or more.

(1) Register the seat position to a seat memory switch (M1 or M2 switch) in advance.

(2) Sit on the driver seat carrying only the electrical key transmitter sub-assembly to which a seat position is to be registered.

(3) With the ignition switch ON and the shift lever in P, restore the seat to the memorized position to be registered.

(4) With the ignition switch ON, the shift lever in P, the driver door closed and a seat memory switch (M1 or M2 switch) being pressed and held, press and hold the door control switch on the multiplex network master switch assembly until the buzzer answer-back function operates.

HINT:

The door control switch on the multiplex network master switch assembly can be pressed to either the lock or unlock side.
The buzzer will sound for 0.5 seconds when the registration is complete.
The buzzer will sound for 3 seconds if the registration fails.

(b) Memory deletion

NOTICE:

Do not bring 2 or more electrical key transmitter sub-assemblies into the cabin.
Do not press and hold the door control switch on the multiplex network master switch assembly for 3 seconds or more.

(1) Sit on the driver seat carrying only the electrical key transmitter sub-assembly from which the seat position is to be deleted.

(2) With the ignition switch ON, the shift lever in P, the driver door closed and the SET seat memory switch being pressed and held, press and hold the door control switch on the multiplex network master switch assembly until the answer-back by the buzzer is confirmed.

HINT:

The door control switch on the multiplex network master switch assembly can be pressed to either the lock or unlock side.
The buzzer will sound for 0.5 seconds when the memory deletion is complete.
The buzzer will sound for 3 seconds if the memory deletion fails.

2. POSITION CONTROL ECU ASSEMBLY LH INITIALIZATION

NOTICE:

Initializing the position control ECU assembly LH will clear the seat position memory.
Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).

HINT:

Before initializing the position control ECU assembly LH, make sure that the D/C CUT fuse is normal.
As the seat position information in the position control ECU assembly LH will be cleared when any of the following operations are performed, perform an initialization of the position control ECU assembly LH.
- The ignition switch is turned off with any of the seat switches being operated and the D/C CUT fuse removed.
- The ignition switch is turned off within 1 second of any of the seat switches being operated with the D/C CUT fuse removed.
- Power supplied to the position control ECU assembly LH is cut while the seat is moving to the memorized position.

(a) When using the GTS

(1) In accordance with the display of the GTS, perform initialization.

Body Electrical > Driver Seat > Utility

Tester Display
Driving Position/Endpoint Information Clear

(b) When not using the GTS

(1) Reset the ECU:

Turn the ignition switch to ON.
Operate the slide and vertical power seat switch knob to tilt the front of the power seat downward 3 times.
Within 10 seconds of operating the slide and vertical power seat switch knob, simultaneously operate and hold the reclining power seat switch knob and slide and vertical power seat switch knob to recline and move the power seat upward until a buzzer sounds.

(2) Set the ECU 0 value:

Operate and hold the slide power seat switch knob to move the power seat to the foremost position. Continue holding the switch for 1 second after the seat has stopped.
Operate and hold the slide power seat switch knob to move the power seat to the rearmost position. Continue holding the switch for 1 second after the seat has stopped.
Operate and hold the lifter power seat switch knob to move the power seat to the lowermost position. Continue holding the switch for 1 second after the seat has stopped.
Operate and hold the reclining power seat switch knob to move the seatback to the foremost position. Continue holding the switch for 1 second after the seatback has stopped.

Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)

NOTICE:

When the customer requests a change in a function, first make sure that the function can be customized.
Record the current settings before customizing.

HINT:

The following items can be customized.

(a) Customizing with the GTS

(1) Select the setting by referring to the table below.

Seat

Tester Display	Description	Default	Setting	ECU
Seat position/Tilt & Telesco memory recall setting	This customize function switches the condition of the seat position and Tilt & Telescopic memory recall. Possible recall activation parameter "D-door unlock and open by smart system" or "Any door unlock and open with smart system".	Driver Door	$00:Driver Door,$01:All Doors	Main body ECU (Multiplex network body ECU)
Driver Seat Distance Adjust when Get Off	Setting of seat slide distance for power easy access system.	Normal	$00:OFF,$01:Little,$02:Normal	Main body ECU (Multiplex network body ECU)
Memory Call Function	Setting of memory call function.	Enable	$00:Disable,$01:Enable	Main body ECU (Multiplex network body ECU)
Auto Operation Interference Avoidance Function (D)	Setting of interference avoidance function for automatic operation.	ON	$00:OFF,$01:ON	Position control ECU assembly LH

Others

Tester Display	Description	Default	Setting	ECU
Seat Position Voice Control Function	Function to enable or disable seat position adjustment by voice recognition control.*	Enable	$00:Disable,$01:Enable	Main body ECU (Multiplex network body ECU)

*: w/ Body Device Voice Recognition Function

(b) Customizing with the multi-display

(1) Turn the ignition switch to ON.

(2) Enter the following menus: Settings / Toyota Prius Vehicle Customize / Boarding & Exit.

(3) Select the setting by referring to the table below.

Driver easy exit

Display	Description	Default	Setting	Relevant ECU
Seat slide	Setting of seat slide distance for power easy access system.	Full	Off / Partial / Full	Main body ECU (Multiplex network body ECU)

Utility

UTILITY

Customize Setting Initialization

HINT:

The values of the customize setting items controlled by the position control ECU assembly LH can be set to the factory settings.

(a) Perform Customize Setting Initialization according to the display on the GTS.

Body Electrical > Driver Seat > Utility

Tester Display
Customize Setting Initialization

Driving Position Memory Clear

HINT:

All driving positions memorized by operation of the seat memory switch can be cleared.

(a) Perform Driving Position Memory Clear according to the display on the GTS.

Body Electrical > Driver Seat > Utility

Tester Display
Driving Position Memory Clear

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Front Power Seat Control System (w/ Memory)

Symptom	Suspected Area	Link
Front power seat does not operate with front power seat switch	Refer to the "Front Power Seat does not Operate with Front Power Seat Switch".
Buzzer sounds when the front power seat switch is operated	Position control ECU assembly LH initialization
One or more power seat motors do not operate	Refer to the "One or more Power Seat Motors do not Operate".
Power seat position is not memorized	Refer to the "Power Seat Position is not Memorized".
Power seat does not return to memorized position	Refer to the "Power Seat does not Return to Memorized Position".
Wireless transmitter memory function does not operate	Refer to the "Wireless Transmitter Memory Function does not Operate".
Wireless-linked return function does not operate	Refer to the "Wireless-linked Return Function does not Operate".
Power seat power easy access system function does not operate	Refer to the "Power Seat Power Easy Access System Function does not Operate".

Terminals Of Ecu

TERMINALS OF ECU

CHECK POSITION CONTROL ECU ASSEMBLY LH

(a) Disconnect the b11 and b13 position control ECU assembly LH connectors.

(b) Measure the voltage and resistance according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection	Terminal Description	Condition	Specified Condition
b11-2 (GND) - Body ground	Ground	Always	Below 1 Ω
b11-3 ( B) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
b13-1 (IG) - Body ground	Ignition power supply	Ignition switch off	Below 1 V
b13-1 (IG) - Body ground	Ignition power supply	Ignition switch ON	11 to 14 V
b13-15 (SYSB) - Body ground	System power source	Ignition switch off	11 to 14 V
b13-16 (DBCL) - Body ground	Driver seat belt buckle switch signal	Driver seat belt unfastened	10 kΩ or higher
b13-16 (DBCL) - Body ground	Driver seat belt buckle switch signal	Driver seat belt fastened	Below 1 Ω

(d) Measure the voltage and resistance according to the value (s) in the table below.

Tester Connection	Terminal Description	Condition	Specified Condition
b11-1 (SLD ) - Body ground	Slide motor signal (forward)	Slide switch off	Below 1 V
b11-1 (SLD ) - Body ground	Slide motor signal (forward)	Slide switch on (Forward)	11 to 14 V
b11-5 (SLD-) - Body ground	Slide motor signal (rearward)	Slide switch off	Below 1 V
b11-5 (SLD-) - Body ground	Slide motor signal (rearward)	Slide switch on (Rearward)	11 to 14 V
b11-6 (LFT ) - Body ground	Lifter motor signal (upward)	Lifter switch off	Below 1 V
b11-6 (LFT ) - Body ground	Lifter motor signal (upward)	Lifter switch on (Upward)	11 to 14 V
b12-5 (LFT-) - Body ground	Lifter motor signal (downward)	Lifter switch off	Below 1 V
b12-5 (LFT-) - Body ground	Lifter motor signal (downward)	Lifter switch on (Downward)	11 to 14 V
b11-10 (RCL ) - Body ground	Reclining motor signal (forward)	Reclining switch off	Below 1 V
b11-10 (RCL ) - Body ground	Reclining motor signal (forward)	Reclining switch on (Forward)	11 to 14 V
b12-6 (RCL-) - Body ground	Reclining motor signal (rearward)	Reclining switch off	Below 1 V
b12-6 (RCL-) - Body ground	Reclining motor signal (rearward)	Reclining switch on (Rearward)	11 to 14 V
b11-7 (FRV ) - Body ground	Front vertical motor signal (upward)	Front vertical switch off	Below 1 V
b11-7 (FRV ) - Body ground	Front vertical motor signal (upward)	Front vertical switch on (Upward)	11 to 14 V
b12-4 (FRV-) - Body ground	Front vertical motor signal (downward)	Front vertical switch off	Below 1 V
b12-4 (FRV-) - Body ground	Front vertical motor signal (downward)	Front vertical switch on (Downward)	11 to 14 V
b11-9 (L ) - Body ground	Lumbar support adjuster motor signal (forward)	Lumbar support adjuster switch off	Below 1 V
b11-9 (L ) - Body ground	Lumbar support adjuster motor signal (forward)	Lumbar support adjuster switch on (Forward)	11 to 14 V
b12-3 (L-) - Body ground	Lumbar support adjuster motor signal (rearward)	Lumbar support adjuster switch off	Below 1 V
b12-3 (L-) - Body ground	Lumbar support adjuster motor signal (rearward)	Lumbar support adjuster switch on (Rearward)	11 to 14 V
b13-4 (LFLF) - Body ground	Front power seat switch LH (lumbar support adjuster switch (forward)) signal	Lumbar support adjuster switch off	11 to 14 V
b13-4 (LFLF) - Body ground		Lumbar support adjuster switch on (Forward)	Below 1 V
b13-18 (LFLR) - Body ground	Front power seat switch LH (lumbar support adjuster switch (rearward)) signal	Lumbar support adjuster switch off	11 to 14 V
b13-18 (LFLR) - Body ground		Lumbar support adjuster switch on (Rearward)	Below 1 V
b13-9 (SLDF) - Body ground	Front power seat switch LH (slide switch (forward)) signal	Slide switch off	11 to 14 V
b13-9 (SLDF) - Body ground	Front power seat switch LH (slide switch (forward)) signal	Slide switch on (Forward)	Below 1 V
b13-23 (SLDR) - Body ground	Front power seat switch LH (slide switch (rearward)) signal	Slide switch off	11 to 14 V
b13-23 (SLDR) - Body ground	Front power seat switch LH (slide switch (rearward)) signal	Slide switch on (Rearward)	Below 1 V
b13-8 (RCLF) - Body ground	Front power seat switch LH (reclining switch (forward)) signal	Reclining switch off	11 to 14 V
b13-8 (RCLF) - Body ground		Reclining switch on (Forward)	Below 1 V
b13-22 (RCLR) - Body ground	Front power seat switch LH (reclining switch (rearward)) signal	Reclining switch off	11 to 14 V
b13-22 (RCLR) - Body ground		Reclining switch on (Rearward)	Below 1 V
b13-6 (FRVU) - Body ground	Front power seat switch LH (front vertical switch (upward)) signal	Front vertical switch off	11 to 14 V
b13-6 (FRVU) - Body ground		Front vertical switch on (Upward)	Below 1 V
b13-20 (FRVD) - Body ground	Front power seat switch LH (front vertical switch (downward)) signal	Front vertical switch off	11 to 14 V
b13-20 (FRVD) - Body ground		Front vertical switch on (Downward)	Below 1 V
b13-7 (LFTU) - Body ground	Front power seat switch LH (lifter switch (upward)) signal	Lifter switch off	11 to 14 V
b13-7 (LFTU) - Body ground	Front power seat switch LH (lifter switch (upward)) signal	Lifter switch on (Upward)	Below 1 V
b13-21 (LFTD) - Body ground	Front power seat switch LH (lifter switch (downward)) signal	Lifter switch off	11 to 14 V
b13-21 (LFTD) - Body ground		Lifter switch on (Downward)	Below 1 V
b13-12 (SGND) - Body ground	Sensor ground	Always	Below 1 Ω
b13-10 (SSFV) - Body ground	Front vertical position signal	Front vertical function operating	4.8 to 5.1 V
b13-11 (SSRR) - Body ground	Reclining position signal	Reclining function operating	4.8 to 5.1 V
b13-25 (SSRL) - Body ground	Lifter position signal	Lifter function operating	4.8 to 5.1 V
b13-26 (SSRS) - Body ground	Slide position signal	Slide function operating	4.8 to 5.1 V

(e) Check for pulses according to the value (s) in the table below.

Tester Connection	Terminal Description	Condition	Specified Condition
b13-13 (CANP) - Body ground	CAN communication system	Ignition switch ON	Pulse generation
b13-14 (CANN) - Body ground	CAN communication system	Ignition switch ON	Pulse generation

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

(a) Read the Data List according to the display on the GTS.

Body Electrical > Driver Seat > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Total Distance Traveled	Actual driven distance	Min: 0, Max: 999999	Roughly the same as the actual driven distance	-
Total Distance Traveled - Unit	Actual driven distance unit	Undetermined, km, mile or Undetermined	Displays the current actual driven distance unit	-
Memory No1	Seat position memorized with M1 switch	No Memory or Memory	Current memory status	-
Memory No2	Seat position memorized with M2 switch	No Memory or Memory	Current memory status	-
Memory No3	Seat position memorized with M3 switch	No Memory or Memory	Current memory status	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Slide Position Memory No1	Seat slide position memorized with M1 switch	Min: 0, Max: 65535	Current memorized seat position	-
Reclining Position Memory No1	Seat reclining position memorized with M1 switch	Min: 0, Max: 65535	Current memorized seat position	-
Lifter Position Memory No1	Lifter position memorized with M1 switch	Min: 0, Max: 65535	Current memorized seat position	-
Front Vertical Position Memory No1	Front vertical position memorized with M1 switch	Min: 0, Max: 65535	Current memorized seat position	-
Slide Position Memory No2	Seat slide position memorized with M2 switch	Min: 0, Max: 65535	Current memorized seat position	-
Reclining Position Memory No2	Seat reclining position memorized with M2 switch	Min: 0, Max: 65535	Current memorized seat position	-
Lifter Position Memory No2	Lifter position memorized with M2 switch	Min: 0, Max: 65535	Current memorized seat position	-
Front Vertical Position Memory No2	Front vertical position memorized with M2 switch	Min: 0, Max: 65535	Current memorized seat position	-
Slide Position Memory No3	Seat reclining position memorized with M3 switch	Min: 0, Max: 65535	Current memorized seat position	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Reclining Position Memory No3	Lifter position memorized with M3 switch	Min: 0, Max: 65535	Current memorized seat position	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Lifter Position Memory No3	Front vertical position memorized with M3 switch	Min: 0, Max: 65535	Current memorized seat position	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Front Vertical Position Memory No3	Cushion length position memorized with M3 switch	Min: 0, Max: 65535	Current memorized seat position	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
ECU Voltage Value	Voltage of position control ECU assembly LH	Min: 0, Max: 65535 mV	Current voltage of position control ECU assembly LH displayed	-
Battery Voltage Value	Auxiliary battery voltage	Min: 0, Max: 65535 mV	Current auxiliary battery voltage displayed	-
Return & Away Function	Return and away function for power easy access system	Not Available or Available	Function availability	-
Return Operation	Return function target position memorized for power easy access system	Not Available or Available	Not Available: Not memorized Available: Memorized	-
Away Move Range Scale (Slide)	Return function target position for power easy access system	Min: 0, Max: 65535	Current memorized return function target position	-
Slide Position	Seat sliding position	Min: 0, Max: 65535	Current seat position	-
Reclining Position	Seat reclining posit	Min: 0, Max: 65535	Current seat position	-
Lifter Position	Seat lifter position	Min: 0, Max: 65535	Current seat position	-
Front Vertical Position	Seat front vertical position	Min: 0, Max: 65535	Current seat position	-
Front Vertical Initialization Flag	Seat front vertical limit position memory	OFF or ON	OFF: Not memorized ON: Memorized	-
Lifter Initialization Flag	Seat lifter limit position memory	OFF or ON	OFF: Not memorized ON: Memorized	-
Reclining Position Initialization Flag	Seat reclining limit position memory	OFF or ON	OFF: Not memorized ON: Memorized	-
Slide Position Initialization Flag	Seat slide limit position memory	OFF or ON	OFF: Not memorized ON: Memorized	-
Slide Position Front Limit	Seat slide limit position (front)	Min: 0, Max: 65535	Current memorized seat limit position	-
Slide Position Rear Limit	Seat slide limit position (rear)	Min: 0, Max: 65535	Current memorized seat limit position	-
Reclining Position Front Limit	Seat reclining limit position (front)	Min: 0, Max: 65535	Current memorized seat limit position	-
Reclining Position Rear Limit	Seat reclining limit position (rear)	Min: 0, Max: 65535	Current memorized seat limit position	-
Lifter Position UP Limit	Seat lifter limit position (up)	Min: 0, Max: 65535	Current memorized seat limit position	-
Lifter Position Down Limit	Seat lifter limit position (down)	Min: 0, Max: 65535	Current memorized seat limit position	-
Front Vertical UP Limit	Seat front vertical limit position (up)	Min: 0, Max: 65535	Current memorized seat limit position	-
Front Vertical Down Limit	Seat front vertical limit position (down)	Min: 0, Max: 65535	Current memorized seat limit position	-
Slide Front	Slide switch signal (Forward)	OFF or ON	OFF: Slide switch (Forward) off ON: Slide switch (Forward) on	-
Slide Rear	Slide switch signal (Rearward)	OFF or ON	OFF: Slide switch (Rearward) off ON: Slide switch (Rearward) on	-
Reclining Front	Reclining switch signal (Forward)	OFF or ON	OFF: Reclining switch (Forward) off ON: Reclining switch (Forward) on	-
Reclining Rear	Reclining switch signal (Rearward)	OFF or ON	OFF: Reclining switch (Rearward) off ON: Reclining switch (Rearward) on	-
Lifter Up	Lifter switch signal (Upward)	OFF or ON	OFF: Lifter switch (Upward) off ON: Lifter switch (Upward) on	-
Lifter Down	Lifter switch signal (Downward)	OFF or ON	OFF: Lifter switch (Downward) off ON: Lifter switch (Downward) on	-
Front Vertical Up	Front vertical switch signal (Upward)	OFF or ON	OFF: Front vertical switch (Upward) off ON: Front vertical switch (Upward) on	-
Front Vertical Down	Front vertical switch signal (Downward)	OFF or ON	OFF: Front vertical switch (Downward) off ON: Front vertical switch (Downward) on	-
Lumbar Front	Lumbar support adjuster switch signal (Forward)	OFF or ON	OFF: Lumbar support adjuster switch (Forward) off ON: Lumbar support adjuster switch (Forward) on	-
Lumbar Rear	Lumbar support adjuster switch signal (Rearward)	OFF or ON	OFF: Lumbar support adjuster switch (Rearward) off ON: Lumbar support adjuster switch (Rearward) on	-
Driver Seat Buckle Switch	Driver seat belt buckle switch	OFF or ON	OFF: Driver seat belt unfastened ON: Driver seat belt fastened	-
Auto Operation Interference Avoidance Function (D)	Setting of the function to reverse operation when jam detection is detected during slide direction driver seat	OFF or ON	Customized value displayed	-
Memory Last (Driver1)	Seat position memorized at the end of previous Toyota Prius vehicle drive (Driver 1)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No1 (Driver1)	Seat position memorized with M1 switch (Driver 1)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No2 (Driver1)	Seat position memorized with M2 switch (Driver 1)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No3 (Driver1)	Seat position memorized with M3 switch (Driver 1)	No Memory or Memory	Current memory status	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Slide Position Memory No1 (Driver1)	Seat slide position memorized with M1 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory No1 (Driver1)	Seat reclining position memorized with M1 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory No1 (Driver1)	Lifter position memorized with M1 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory No1 (Driver1)	Front vertical position memorized with M1 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Slide Position Memory No2 (Driver1)	Seat slide position memorized with M2 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory No2 (Driver1)	Seat reclining position memorized with M2 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory No2 (Driver1)	Lifter position memorized with M2 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory No2 (Driver1)	Front vertical position memorized with M2 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Slide Position Memory No3 (Driver1)	Seat slide position memorized with M3 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Reclining Position Memory No3 (Driver1)	Seat reclining position memorized with M3 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Lifter Position Memory No3 (Driver1)	Lifter position memorized with M3 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Front Vertical Position Memory No3 (Driver1)	Front vertical position memorized with M3 switch (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Slide Position Memory Last (Driver1)	Slide position memorized at the end of previous vehicle drive (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory Last (Driver1)	Reclining position memorized at the end of previous Toyota Prius vehicle drive (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory Last (Driver1)	Lifter position memorized at the end of previous Toyota Prius vehicle drive (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory Last (Driver1)	Front vertical position memorized at the end of previous Toyota Prius vehicle drive (Driver 1)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Memory Last (Driver2)	Seat position memorized at the end of previous Toyota Prius vehicle drive (Driver 2)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No1 (Driver2)	Seat position memorized with M1 switch (Driver 2)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No2 (Driver2)	Seat position memorized with M2 switch (Driver 2)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No3 (Driver2)	Seat position memorized with M3 switch (Driver 2)	No Memory or Memory	Current memory status	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Slide Position Memory No1 (Driver2)	Seat slide position memorized with M1 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory No1 (Driver2)	Seat reclining position memorized with M1 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory No1 (Driver2)	Lifter position memorized with M1 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory No1 (Driver2)	Front vertical position memorized with M1 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Slide Position Memory No2 (Driver2)	Seat slide position memorized with M2 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory No2 (Driver2)	Seat reclining position memorized with M2 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory No2 (Driver2)	Lifter position memorized with M2 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory No2 (Driver2)	Front vertical position memorized with M2 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Slide Position Memory No3 (Driver2)	Seat slide position memorized with M3 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Reclining Position Memory No3 (Driver2)	Seat reclining position memorized with M3 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Lifter Position Memory No3 (Driver2)	Lifter position memorized with M3 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Front Vertical Position Memory No3 (Driver2)	Front vertical position memorized with M3 switch (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Slide Position Memory Last (Driver2)	Slide position memorized at the end of previous vehicle drive (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory Last (Driver2)	Reclining position memorized at the end of previous Toyota Prius vehicle drive (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory Last (Driver2)	Lifter position memorized at the end of previous Toyota Prius vehicle drive (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory Last (Driver2)	Front vertical position memorized at the end of previous Toyota Prius vehicle drive (Driver 2)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Memory Last (Driver3)	Seat position memorized at the end of previous Toyota Prius vehicle drive (Driver 3)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No1 (Driver3)	Seat position memorized with M1 switch (Driver 3)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No2 (Driver3)	Seat position memorized with M2 switch (Driver 3)	No Memory or Memory	Current memory status	w/ My Settings System
Memory No3 (Driver3)	Seat position memorized with M3 switch (Driver 3)	No Memory or Memory	Current memory status	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Slide Position Memory No1 (Driver3)	Seat slide position memorized with M1 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory No1 (Driver3)	Seat reclining position memorized with M1 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory No1 (Driver3)	Lifter position memorized with M1 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory No1 (Driver3)	Front vertical position memorized with M1 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Slide Position Memory No2 (Driver3)	Seat slide position memorized with M2 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory No2 (Driver3)	Seat reclining position memorized with M2 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory No2 (Driver3)	Lifter position memorized with M2 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory No2 (Driver3)	Front vertical position memorized with M2 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Slide Position Memory No3 (Driver3)	Seat slide position memorized with M3 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Reclining Position Memory No3 (Driver3)	Seat reclining position memorized with M3 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Lifter Position Memory No3 (Driver3)	Lifter position memorized with M3 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Front Vertical Position Memory No3 (Driver3)	Front vertical position memorized with M3 switch (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Slide Position Memory Last (Driver3)	Slide position memorized at the end of previous vehicle drive (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Reclining Position Memory Last (Driver3)	Reclining position memorized at the end of previous Toyota Prius vehicle drive (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Lifter Position Memory Last (Driver3)	Lifter position memorized at the end of previous Toyota Prius vehicle drive (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System
Front Vertical Position Memory Last (Driver3)	Front vertical position memorized at the end of previous Toyota Prius vehicle drive (Driver 3)	Min: 0, Max: 65535	Current memorized seat position	w/ My Settings System

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
FR Door Courtesy Switch Status	Front door courtesy light switch assembly (RH) signal	Close or Open	Close: Front door RH closed Open: Front door RH open	-
FL Door Courtesy Switch Status	Front door courtesy light switch assembly (LH) signal	Close or Open	Close: Front door LH closed Open: Front door LH open	-
Driver Seat Memory Switch (MM)	SET switch	OFF or ON	OFF: SET switch off ON: SET switch on	-
Driver Seat Memory Switch (M1)	M1 switch	OFF or ON	OFF: M1 switch off ON: M1 switch on	-
Driver Seat Memory Switch (M2)	M2 switch	OFF or ON	OFF: M2 switch off ON: M2 switch on	-
MEM Switch No. with Key ID 1	Memory switch linked with key ID1	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID1 D MEM SW1: M1 switch linked with key ID1 D MEM SW2: M2 switch linked with key ID1 D MEM SW3: M3 switch linked with key ID1*	-
MEM Switch No. with Key ID 2	Memory switch linked with key ID2	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID2 D MEM SW1: M1 switch linked with key ID2 D MEM SW2: M2 switch linked with key ID2 D MEM SW3: M3 switch linked with key ID2*	-
MEM Switch No. with Key ID 3	Memory switch linked with key ID3	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID3 D MEM SW1: M1 switch linked with key ID3 D MEM SW2: M2 switch linked with key ID3 D MEM SW3: M3 switch linked with key ID3*	-
MEM Switch No. with Key ID 4	Memory switch linked with key ID4	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID4 D MEM SW1: M1 switch linked with key ID4 D MEM SW2: M2 switch linked with key ID4 D MEM SW3: M3 switch linked with key ID4*	-
MEM Switch No. with Key ID 5	Memory switch linked with key ID5	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID5 D MEM SW1: M1 switch linked with key ID5 D MEM SW2: M2 switch linked with key ID5 D MEM SW3: M3 switch linked with key ID5*	-
MEM Switch No. with Key ID 6	Memory switch linked with key ID6	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID6 D MEM SW1: M1 switch linked with key ID6 D MEM SW2: M2 switch linked with key ID6 D MEM SW3: M3 switch linked with key ID6*	-
MEM Switch No. with Key ID 7	Memory switch linked with key ID7	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID7 D MEM SW1: M1 switch linked with key ID7 D MEM SW2: M2 switch linked with key ID7 D MEM SW3: M3 switch linked with key ID7*	-
D Seat Information	Position control ECU assembly LH status	Without, With or Return	Without: Position control ECU assembly LH not connected With: Position control ECU assembly LH connected (Not including power seat power easy access system function) Return: Position control ECU assembly LH connected (Including power seat power easy access system function)	-
Driver Seat MEM_1 Memory	Seat position memorized with M1 switch	Without or With	Without: Not memorized With: Memorized	-
Driver Seat MEM_2 Memory	Seat position memorized with M2 switch	Without or With	Without: Not memorized With: Memorized	-
Driver Seat MEM_3 Memory	Seat position memorized with M3 switch	Without or With	Without: Not memorized With: Memorized	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Seat position/Tilt & Telesco memory recall setting	Setting status of seat position/tilt and telescopic memory recall	Driver Door or All Door	Customize setting displayed	-
Seat Position Voice Control Function	Status of seat position adjustment by voice recognition control	Disable or Enable	Customize setting displayed	w/ Body Device Voice Recognition Function
Driver Seat Distance Adjust when Get Off	Setting status of power easy access system	OFF, Little or Normal	Customize setting displayed	-
Memory Call Function	Setting status of memory call function	Disable or Enable	Customize setting displayed	-
Driver Seat MEM_1 Memory	Seat position memorized with M1 switch (Driver 1)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat MEM_2 Memory	Seat position memorized with M2 switch (Driver 1)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat MEM_3 Memory	Seat position memorized with M3 switch (Driver 1)	Without or With	Without: Not memorized With: Memorized	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Driver Seat Last Position Memory	Seat position memorized at the end of previous vehicle drive (Driver 1)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat Distance Adjust when getting out	Setting status of seat slide distance for power easy access system (Driver 1)	OFF, Little or Normal	Customize setting displayed	w/ My Settings System
Memory Call Function	Setting status of memory call function (Driver 1)	Disable or Enable	Customize setting displayed	w/ My Settings System
Driver Seat MEM_1 Memory	Seat position memorized with M1 switch (Driver 2)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat MEM_2 Memory	Seat position memorized with M2 switch (Driver 2)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat MEM_3 Memory	Seat position memorized with M3 switch (Driver 2)	Without or With	Without: Not memorized With: Memorized	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Driver Seat Last Position Memory	Seat position memorized at the end of previous vehicle drive (Driver 2)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat Distance Adjust when getting out	Setting status of seat slide distance for power easy access system (Driver 2)	OFF, Little or Normal	Customize setting displayed	w/ My Settings System
Memory Call Function	Setting status of memory call function (Driver 2)	Disable or Enable	Customize setting displayed	w/ My Settings System
Driver Seat MEM_1 Memory	Seat position memorized with M1 switch (Driver 3)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat MEM_2 Memory	Seat position memorized with M2 switch (Driver 3)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat MEM_3 Memory	Seat position memorized with M3 switch (Driver 3)	Without or With	Without: Not memorized With: Memorized	Although the item is displayed on the GTS, it is not applicable to this Toyota Prius vehicle.
Driver Seat Last Position Memory	Seat position memorized at the end of previous vehicle drive (Driver 3)	Without or With	Without: Not memorized With: Memorized	w/ My Settings System
Driver Seat Distance Adjust when getting out	Setting status of seat slide distance for power easy access system (Driver 3)	OFF, Little or Normal	Customize setting displayed	w/ My Settings System
Memory Call Function	Setting status of memory call function (Driver 3)	Disable or Enable	Customize setting displayed	w/ My Settings System

*: Not applicable

Powertrain > Hybrid Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Shift Position	Current shift state	P / R / N / D / B (S)	The selected shift state is displayed	-

ACTIVE TEST

HINT:

Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Driver Seat > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Slide Motor	Seat slide operation	Front/Rear	-
Reclining Motor	Seat reclining operation	Front/Rear	-
Lifter Motor	Seat lifter operation	Up/Down	-
Front Vertical Motor	Seat front vertical operation	Up/Down	-
Buzzer	Buzzer operation	ON	-
Lumbar Front/Rear Motor	Lumbar support operation (Forward - Rearward)	Front/Rear	-

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Front Power Seat Control System (w/ Memory)

DTC No.	Detection Item	DTC Output from	Priority
B265096	Slide Sensor (Motor) Component Internal Failure	Driver Seat	A
B265196	Reclining Sensor (Motor) Component Internal Failure	Driver Seat	A
B265296	Front Vertical Sensor (Motor) Component Internal Failure	Driver Seat	A
B265396	Lifter Sensor (Motor) Component Internal Failure	Driver Seat	A
B265814	Sensor Power Supply Circuit Short to Ground or Open	Driver Seat	A
U010087	Lost Communication With ECM/PCM "A" Missing Message	Driver Seat	B
U012987	Lost Communication with Brake System Control Module Missing Message	Driver Seat	B
U014087	Lost Communication with Body Control Module Missing Message	Driver Seat	B
U016387	Lost Communication with Navigation Control Module Missing Message	Driver Seat	B
U110787	Lost Communication with Power Management Module Missing Message	Driver Seat	B
U114F87	Lost Communication with Power Integration Module Missing Message	Driver Seat	B

Slide Sensor (Motor) Component Internal Failure (B265096)

DESCRIPTION

When the position control ECU assembly LH does not receive a slide motor position sensor signal despite the seat having been moved forward or backward by power seat motor operation, this DTC is stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B265096	Slide Sensor (Motor) Component Internal Failure	Slide motor position sensor signal not received when power seat moved forward or backward	Position control ECU assembly LH Slide motor (upper seat track rail sub-assembly LH) Wire harness or connector	Driver Seat	A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Driver Seat > Clear DTCs

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Driver Seat > Trouble Codes

Result	Proceed to
B265096 is not output	A
B265096 is output	B

USE SIMULATION METHOD TO CHECK

3.	PERFORM ACTIVE TEST USING GTS

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Driver Seat > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Slide Motor	Seat slide operation	Front/Rear	-

Body Electrical > Driver Seat > Active Test

Tester Display
Slide Motor

OK:

Slide motor operates normally.

GO TO STEP 7

4.	CHECK POSITION CONTROL ECU ASSEMBLY LH

Pre-procedure1

(a) Disconnect the b1 slide motor (upper seat track rail sub-assembly LH) connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b1) Click Connector(b1)

Tester Connection	Condition	Specified Condition	Result
b1-2 - b1-3	Slide switch on	4.8 to 5.1 V	V

Post-procedure1

GO TO STEP 6

5.	CHECK SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

Pre-procedure1

(a) Reconnect the b1 slide motor (upper seat track rail sub-assembly LH) connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b1) Click Connector(b1)

Tester Connection	Condition	Specified Condition	Result
b1-2 - Body ground	Slide motor operating	4.5 to 4.8 V	V

Result:

Proceed to
OK
NG

*a	Component with harness connected (Slide Motor (Upper Seat Track Rail Sub-assembly LH))

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

REPLACE SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

6.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH))

Pre-procedure1

(a) Disconnect the b13 position control ECU assembly LH connector.

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(b13,b1) Click Connector(b13) Click Connector(b1)

Tester Connection	Condition	Specified Condition	Result
b13-26 (SSRS) - b1-2	Always	Below 1 Ω	Ω
b13-26 (SSRS) or b1-2 - Body ground	Always	10 kΩ or higher	kΩ
b13-12 (SGND) - b1-3	Always	Below 1 Ω	Ω
b13-12 (SGND) or b1-3 - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	INSPECT SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

HINT:

Click here

REPLACE SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

8.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH))

Pre-procedure1

(a) Disconnect the b11 position control ECU assembly LH connector.

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(b11,b1) Click Connector(b11) Click Connector(b1)

Tester Connection	Condition	Specified Condition	Result
b11-1 (SLD ) - b1-4	Always	Below 1 Ω	Ω
b11-1 (SLD ) or b1-4 - Body ground	Always	10 kΩ or higher	kΩ
b11-5 (SLD-) - b1-1	Always	Below 1 Ω	Ω
b11-5 (SLD-) or b1-1 - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

REPAIR OR REPLACE HARNESS OR CONNECTOR

Sensor Power Supply Circuit Short to Ground or Open (B265814)

DESCRIPTION

This DTC is stored when a power seat motor operates (a position control sensor is being supplied with power) and the power supply voltage does not rise to the specified value.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
B265814	Sensor Power Supply Circuit Short to Ground or Open	Problem with the voltage supplied to the position control sensor	Position control ECU assembly LH Slide motor (upper seat track rail sub-assembly LH) Front vertical motor (power seat tilt motor assembly LH) Lifter motor (power seat lifter motor assembly LH) Reclining motor (front seatback frame sub-assembly LH) Wire harness or connector	Driver Seat	A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Driver Seat > Clear DTCs

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Driver Seat > Trouble Codes

Result	Proceed to
Only B265814 is output	A
B265096 and B265814 are output	B
B265196 and B265814 are output	C
B265296 and B265814 are output	D
B265396 and B265814 are output	E

GO TO FRONT POWER SEAT CONTROL SYSTEM (B265096)

GO TO FRONT POWER SEAT CONTROL SYSTEM (B265196)

GO TO FRONT POWER SEAT CONTROL SYSTEM (B265296)

GO TO FRONT POWER SEAT CONTROL SYSTEM (B265396)

3.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLYY LH))

Pre-procedure1

(a) Disconnect the b13 position control ECU assembly LH connector.

(b) Disconnect the b1 slide motor (upper seat track rail sub-assembly LH) connector.

Procedure1

Standard Resistance:

Click Location & Routing(b13,b1) Click Connector(b13) Click Connector(b1)

Tester Connection	Condition	Specified Condition	Result
b13-26 (SSRS) - b1-2	Always	Below 1 Ω	Ω
b13-26 (SSRS) or b1-2 - Body ground	Always	10 kΩ or higher	kΩ
b13-12 (SGND) - b1-3	Always	Below 1 Ω	Ω
b13-12 (SGND) or b1-3 - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK POSITION CONTROL ECU ASSEMBLY LH (SLIDE MOTOR CIRCUIT)

Pre-procedure1

(a) Reconnect the b13 position control ECU assembly LH connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b1) Click Connector(b1)

Tester Connection	Condition	Specified Condition	Result
b1-2 - b1-3	Slide switch on	4.8 to 5.1 V	V

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

5.	CHECK SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

Pre-procedure1

(a) Reconnect the b1 slide motor (upper seat track rail sub-assembly LH) connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b1) Click Connector(b1)

Tester Connection	Condition	Specified Condition	Result
b1-2 - Body ground	Slide motor operating	4.5 to 4.8 V	V

Result:

Proceed to
OK
NG

*a	Component with harness connected (Slide Motor (Upper Seat Track Rail Sub-assembly LH))

Post-procedure1

REPLACE SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

6.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - FRONT VERTICAL MOTOR (POWER SEAT TILT MOTOR ASSEMBLY LH))

Pre-procedure1

(a) Disconnect the b13 position control ECU assembly LH connector.

(b) Disconnect the b2 front vertical motor (power seat tilt motor assembly LH) connector.

Procedure1

Standard Resistance:

Click Location & Routing(b13,b2) Click Connector(b13) Click Connector(b2)

Tester Connection	Condition	Specified Condition	Result
b13-10 (SSFV) - b2-2	Always	Below 1 Ω	Ω
b13-10 (SSFV) or b2-2 - Body ground	Always	10 kΩ or higher	kΩ
b13-12 (SGND) - b2-3	Always	Below 1 Ω	Ω
b13-12 (SGND) or b2-3 - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	CHECK POSITION CONTROL ECU ASSEMBLY LH (FRONT VERTICAL MOTOR CIRCUIT)

Pre-procedure1

(a) Reconnect the b13 position control ECU assembly LH) connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b2) Click Connector(b2)

Tester Connection	Condition	Specified Condition	Result
b2-2 - b2-3	Front vertical switch on	4.8 to 5.1 V	V

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

8.	CHECK FRONT VERTICAL MOTOR (POWER SEAT TILT MOTOR ASSEMBLY LH)

Pre-procedure1

(a) Reconnect the b2 front vertical motor (power seat tilt motor assembly LH) connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b2) Click Connector(b2)

Tester Connection	Condition	Specified Condition	Result
b2-2 - Body ground	Front vertical motor operating	4.5 to 4.8 V	V

Result:

Proceed to
OK
NG

*a	Component with harness connected (Front Vertical Motor (Power Seat Tilt Motor Assembly LH))

Post-procedure1

REPLACE FRONT VERTICAL MOTOR (POWER SEAT TILT MOTOR ASSEMBLY LH)

9.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - LIFTER MOTOR (POWER SEAT LIFTER MOTOR ASSEMBLY LH))

Pre-procedure1

(a) Disconnect the b13 position control ECU assembly LH connector.

(b) Disconnect the b3 lifter motor (power seat lifter motor assembly LH) connector.

Procedure1

Standard Resistance:

Click Location & Routing(b13,b3) Click Connector(b13) Click Connector(b3)

Tester Connection	Condition	Specified Condition	Result
b13-25 (SSRL) - b3-2	Always	Below 1 Ω	Ω
b13-25 (SSRL) or b3-2 - Body ground	Always	10 kΩ or higher	kΩ
b13-12 (SGND) - b3-3	Always	Below 1 Ω	Ω
b13-12 (SGND) or b3-3 - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.	CHECK POSITION CONTROL ECU ASSEMBLY LH (LIFTER MOTOR CIRCUIT)

Pre-procedure1

(a) Reconnect the b13 position control ECU assembly LH connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b3) Click Connector(b3)

Tester Connection	Condition	Specified Condition	Result
b3-2 - b3-3	Lifter switch on	4.8 to 5.1 V	V

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

11.	CHECK LIFTER MOTOR (POWER SEAT LIFTER MOTOR ASSEMBLY LH)

Pre-procedure1

(a) Reconnect the b3 lifter motor (power seat lifter motor assembly LH) connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b3) Click Connector(b3)

Tester Connection	Condition	Specified Condition	Result
b3-2 - Body ground	Lifter motor operating	4.5 to 4.8 V	V

Result:

Proceed to
OK
NG

*a	Component with harness connected (Lifter Motor (Power Seat Lifter Motor assembly LH))

Post-procedure1

REPLACE LIFTER MOTOR (POWER SEAT LIFTER MOTOR ASSEMBLY LH)

12.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH))

Pre-procedure1

(a) Disconnect the b13 position control ECU assembly LH connector.

(b) Disconnect the d2 reclining motor (front seatback frame sub-assembly LH) connector.

Procedure1

Standard Resistance:

Click Location & Routing(b13,d2) Click Connector(b13) Click Connector(d2)

Tester Connection	Condition	Specified Condition	Result
b13-11 (SSRR) - d2-2	Always	Below 1 Ω	Ω
b13-11 (SSRR) or d2-2 - Body ground	Always	10 kΩ or higher	kΩ
b13-12 (SGND) - d2-3	Always	Below 1 Ω	Ω
b13-12 (SGND) or d2-3 - Body ground	Always	10 kΩ or higher	kΩ

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.	CHECK POSITION CONTROL ECU ASSEMBLY LH (RECLINING MOTOR CIRCUIT)

Pre-procedure1

(a) Reconnect the b13 position control ECU assembly LH connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(d2) Click Connector(d2)

Tester Connection	Condition	Specified Condition	Result
d2-2 - d2-3	Reclining switch on	4.8 to 5.1 V	V

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

14.	CHECK RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH)

Pre-procedure1

(a) Reconnect the d2 reclining motor (front seatback frame sub-assembly LH) connector.

Procedure1

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(d2) Click Connector(d2)

Tester Connection	Condition	Specified Condition	Result
d2-2 - Body ground	Reclining motor operating	4.5 to 4.8 V	V

Result:

Proceed to
OK
NG

*a	Component with harness connected (Reclining Motor (Front Seatback Frame Sub-assembly LH))

Post-procedure1

REPLACE POSITION CONTROL ECU ASSEMBLY LH

REPLACE RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH)

Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014087,U016387,U110787,U114F87)

DESCRIPTION

These DTCs are stored if a CAN communication malfunction occurs between the position control ECU assembly LH and other ECUs.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
U010087	Lost Communication With ECM/PCM "A" Missing Message	The position control ECU assembly LH does not receive data from the hybrid Toyota Prius vehicle control ECU for approximately 10 seconds or more.	CAN communication system	Driver Seat	B
U012987	Lost Communication with Brake System Control Module Missing Message	The position control ECU assembly LH does not receive data from the No. 2 skid control ECU (brake actuator assembly) for approximately 10 seconds or more.	CAN communication system	Driver Seat	B
U014087	Lost Communication with Body Control Module Missing Message	The position control ECU assembly LH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.	CAN communication system	Driver Seat	B
U016387	Lost Communication with Navigation Control Module Missing Message	The position control ECU assembly LH does not receive data from the radio and display receiver assembly for approximately 10 seconds or more.	CAN communication system	Driver Seat	B
U110787	Lost Communication with Power Management Module Missing Message	The position control ECU assembly LH does not receive data from the certification ECU (smart key ECU assembly) for approximately 10 seconds or more.	CAN communication system	Driver Seat	B
U114F87	Lost Communication with Power Integration Module Missing Message	The position control ECU assembly LH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.	CAN communication system	Driver Seat	B

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Driver Seat > Clear DTCs

2.	CHECK FOR DTC

Pre-procedure1

(a) Turn the ignition switch to ON.

(b) Wait 10 seconds or more.

Procedure1

Body Electrical > Driver Seat > Trouble Codes

Result	Proceed to
DTCs are not output	A
U010087, U012987, U014087, U016387, U110787 or U114F87 is output	B

Post-procedure1

(d) None

USE SIMULATION METHOD TO CHECK

GO TO CAN COMMUNICATION SYSTEM

for HEV Model: Click here

for PHEV Model: Click here

Front Power Seat does not Operate with Front Power Seat Switch

DESCRIPTION

Signals are input into the position control ECU assembly LH. The built-in ECU manages the signals received from the power seat switch and operates each motor. If the position control ECU assembly LH receives more than 2 motor operation signals for the same motor, the motor will be stopped. Manual operation resumes when the position control ECU assembly LH receives only 1 signal.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.
Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.

PROCEDURE

1.	CHECK FRONT POWER SEAT OPERATION

(a) Check that each function of the power seat operates normally by using the front power seat switch assembly LH.

Click here

Result	Proceed to
All power seat functions do not operate	A
One or more power seat functions do not operate	B

GO TO OTHER DIAGNOSIS PROCEDURE (One or more Power Seat Motors do not Operate)

2.	INSPECT FRONT POWER SEAT SWITCH ASSEMBLY LH

Click here

REPLACE FRONT POWER SEAT SWITCH ASSEMBLY LH

3.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - POWER SUPPLY)

(a) Disconnect the b11 and b13 position control ECU assembly LH connectors.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Click Location & Routing(b11,b13) Click Connector(b11) Click Connector(b13)

Tester Connection	Condition	Specified Condition
b11-3 ( B) - Body ground	Ignition switch off	11 to 14 V
b13-15 (SYSB) - Body ground	Ignition switch off	11 to 14 V
b13-1 (IG) - Body ground	Ignition switch ON	11 to 14 V
b13-1 (IG) - Body ground	Ignition switch off	Below 1 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - BODY GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(b11) Click Connector(b11)

Tester Connection	Condition	Specified Condition
b11-2 (GND) - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - FRONT POWER SEAT SWITCH ASSEMBLY LH)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(b13,b7) Click Connector(b13) Click Connector(b7)

Tester Connection	Condition	Specified Condition
b13-12 (SGND) - b7-20 (E)	Always	Below 1 Ω
b13-12 (SGND) or b7-20 (E) - Body ground	Always	Below 1 Ω

REPLACE POSITION CONTROL ECU ASSEMBLY LH

REPAIR OR REPLACE HARNESS OR CONNECTOR

One or more Power Seat Motors do not Operate

DESCRIPTION

Signals are input into the position control ECU assembly LH. The built-in ECU manages the signals received from the position control ECU assembly LH and operates each motor. If the position control ECU assembly LH receives 2 or more operation signals for the same motor, the motor will be stopped. Manual operation resumes when the position control ECU assembly LH receives only 1 signal.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.

PROCEDURE

1.	CHECK FRONT POWER SEAT OPERATION

(a) Check that each function of the power seat operates normally by using the front power seat switch assembly LH.

Click here

Result	Proceed to
One or more power seat functions do not operate	A
All power seat functions do not operate	B

GO TO OTHER DIAGNOSIS PROCEDURE (Front Power Seat does not Operate with Front Power Seat Switch)

2.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Driver Seat > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Slide Front	Slide switch signal (Forward)	OFF or ON	OFF: Slide switch (Forward) off ON: Slide switch (Forward) on	-
Slide Rear	Slide switch signal (Rearward)	OFF or ON	OFF: Slide switch (Rearward) off ON: Slide switch (Rearward) on	-
Reclining Front	Reclining switch signal (Forward)	OFF or ON	OFF: Reclining switch (Forward) off ON: Reclining switch (Forward) on	-
Reclining Rear	Reclining switch signal (Rearward)	OFF or ON	OFF: Reclining switch (Rearward) off ON: Reclining switch (Rearward) on	-
Lifter Up	Lifter switch signal (Upward)	OFF or ON	OFF: Lifter switch (Upward) off ON: Lifter switch (Upward) on	-
Lifter Down	Lifter switch signal (Downward)	OFF or ON	OFF: Lifter switch (Downward) off ON: Lifter switch (Downward) on	-
Front Vertical Up	Lumbar support adjuster switch signal (Upward)	OFF or ON	OFF: Lumbar support adjuster switch (Upward) off ON: Lumbar support adjuster switch (Upward) on	-
Front Vertical Down	Lumbar support adjuster switch signal (Downward)	OFF or ON	OFF: Lumbar support adjuster switch (Downward) off ON: Lumbar support adjuster switch (Downward) on	-
Lumbar Front	Lumbar support adjuster switch signal (Forward)	OFF or ON	OFF: Lumbar support adjuster switch (Forward) off ON: Lumbar support adjuster switch (Forward) on	-
Lumbar Rear	Lumbar support adjuster switch signal (Rearward)	OFF or ON	OFF: Lumbar support adjuster switch (Rearward) off ON: Lumbar support adjuster switch (Rearward) on	-

Body Electrical > Driver Seat > Data List

Tester Display
Slide Front
Slide Rear
Reclining Front
Reclining Rear
Lifter Up
Lifter Down
Front Vertical Up
Front Vertical Down
Lumbar Front
Lumbar Rear

OK:

On the GTS screen, OFF or ON is displayed accordingly

GO TO STEP 10

3.	PERFORM ACTIVE TEST USING GTS

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Driver Seat > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Slide Motor	Seat slide operation	Front/Rear	-
Reclining Motor	Seat reclining operation	Front/Rear	-
Lifter Motor	Seat lifter operation	Up/Down	-
Front Vertical Motor	Seat front vertical operation	Up/Down	-
Lumbar Front/Rear Motor	Lumbar support operation (Forward - Rearward)	Front/Rear	-

Body Electrical > Driver Seat > Active Test

Tester Display
Slide Motor

Body Electrical > Driver Seat > Active Test

Tester Display
Reclining Motor

Body Electrical > Driver Seat > Active Test

Tester Display
Lifter Motor

Body Electrical > Driver Seat > Active Test

Tester Display
Front Vertical Motor

Body Electrical > Driver Seat > Active Test

Tester Display
Lumbar Front/Rear Motor

Result	Proceed to
All power seat functions operate normally	A
Slide function does not operate normally	B
Front vertical function does not operate normally	C
Lifter function does not operate normally	D
Reclining function does not operate normally	E
Lumbar support adjustment function does not operate normally	F

REPLACE POSITION CONTROL ECU ASSEMBLY LH

GO TO STEP 5

GO TO STEP 6

GO TO STEP 7

GO TO STEP 8

4.	INSPECT SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

Click here

GO TO STEP 9

REPLACE SLIDE MOTOR (UPPER SEAT TRACK RAIL SUB-ASSEMBLY LH)

5.	INSPECT FRONT VERTICAL MOTOR (POWER SEAT TILT MOTOR ASSEMBLY LH)

Click here

GO TO STEP 9

REPLACE FRONT VERTICAL MOTOR (POWER SEAT TILT MOTOR ASSEMBLY LH)

6.	INSPECT LIFTER MOTOR (POWER SEAT LIFTER MOTOR ASSEMBLY LH)

Click here

GO TO STEP 9

REPLACE LIFTER MOTOR (POWER SEAT LIFTER MOTOR ASSEMBLY LH)

7.	INSPECT RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH)

Click here

GO TO STEP 9

REPLACE RECLINING MOTOR (FRONT SEATBACK FRAME SUB-ASSEMBLY LH)

8.	INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY LH

Click here

REPLACE LUMBAR SUPPORT ADJUSTER ASSEMBLY LH

9.	CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - POWER SEAT MOTOR)

(a) Disconnect the b11 and b12 position control ECU assembly LH connectors.

(b) Measure the resistance according to the value(s) in the table below.

HINT:

Check the wire harness and connector between the position control ECU assembly LH and applicable motor.

Standard Resistance:

Slide Motor

Click Location & Routing(b11,b1) Click Connector(b11) Click Connector(b1)

Tester Connection	Condition	Specified Condition
b11-1 (SLD ) - b1-4	Always	Below 1 Ω
b11-1 (SLD ) or b1-4 - Body ground	Always	10 kΩ or higher
b11-5 (SLD-) - b1-1	Always	Below 1 Ω
b11-5 (SLD-) or b1-1 - Body ground	Always	10 kΩ or higher

Front Vertical Motor

Click Location & Routing(b11,b2,b12) Click Connector(b11) Click Connector(b2) Click Connector(b12)

Tester Connection	Condition	Specified Condition
b11-7 (FRV ) - b2-1	Always	Below 1 Ω
b11-7 (FRV ) or b2-1 - Body ground	Always	10 kΩ or higher
b12-4 (FRV-) - b2-4	Always	Below 1 Ω
b12-4 (FRV-) or b2-4 - Body ground	Always	10 kΩ or higher

Lifter Motor

Click Location & Routing(b11,b3,b12) Click Connector(b11) Click Connector(b3) Click Connector(b12)

Tester Connection	Condition	Specified Condition
b11-6 (LFT ) - b3-1	Always	Below 1 Ω
b11-6 (LFT ) or b3-1 - Body ground	Always	10 kΩ or higher
b12-5 (LFT-) - b3-4	Always	Below 1 Ω
b12-5 (LFT-) or b3-4 - Body ground	Always	10 kΩ or higher

Reclining Motor

Click Location & Routing(b11,d2,b12) Click Connector(b11) Click Connector(d2) Click Connector(b12)

Tester Connection	Condition	Specified Condition
b11-10 (RCL ) - d2-4	Always	Below 1 Ω
b11-10 (RCL ) or d2-4 - Body ground	Always	10 kΩ or higher
b12-6 (RCL-) - d2-1	Always	Below 1 Ω
b12-6 (RCL-) or d2-1 - Body ground	Always	10 kΩ or higher

Front Lumbar Support Motor (Forward - Back)

Click Location & Routing(b11,d5,b12) Click Connector(b11) Click Connector(d5) Click Connector(b12)

Tester Connection	Condition	Specified Condition
b11-9 (L ) - d5-1	Always	Below 1 Ω
b11-9 (L ) or d5-1 - Body ground	Always	10 kΩ or higher
b12-3 (L-) - d5-2	Always	Below 1 Ω
b12-3 (L-) or d5-2 - Body ground	Always	10 kΩ or higher

REPLACE POSITION CONTROL ECU ASSEMBLY LH

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.	INSPECT FRONT POWER SEAT SWITCH ASSEMBLY LH

Click here

REPLACE FRONT POWER SEAT SWITCH ASSEMBLY LH

11.	CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH ASSEMBLY LH - POSITION CONTROL ECU ASSEMBLY LH)

(a) Disconnect the b13 position control ECU assembly LH connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Ground

Click Location & Routing(b7,b13) Click Connector(b7) Click Connector(b13)

Tester Connection	Condition	Specified Condition
b7-20 (E) - b13-12 (SGND)	Always	Below 1 Ω

Slide Function

Click Location & Routing(b7,b13) Click Connector(b7) Click Connector(b13)

Tester Connection	Condition	Specified Condition
b7-6 (SLDR) - b13-23 (SLDR)	Always	Below 1 Ω
b7-6 (SLDR) or b13-23 (SLDR) - Body ground	Always	10 kΩ or higher
b7-7 (SLDF) - b13-9 (SLDF)	Always	Below 1 Ω
b7-7 (SLDF) or b13-9 (SLDF) - Body ground	Always	10 kΩ or higher

Reclining Function

Click Location & Routing(b7,b13) Click Connector(b7) Click Connector(b13)

Tester Connection	Condition	Specified Condition
b7-1 (RCLR) - b13-22 (RCLR)	Always	Below 1 Ω
b7-1 (RCLR) or b13-22 (RCLR) - Body ground	Always	10 kΩ or higher
b7-2 (RCLF) - b13-8 (RCLF)	Always	Below 1 Ω
b7-2 (RCLF) or b13-8 (RCLF) - Body ground	Always	10 kΩ or higher

Front Vertical Function

Click Location & Routing(b7,b13) Click Connector(b7) Click Connector(b13)

Tester Connection	Condition	Specified Condition
b7-4 (FUP) - b13-6 (FRVU)	Always	Below 1 Ω
b7-4 (FUP) or b13-6 (FRVU) - Body ground	Always	10 kΩ or higher
b7-5 (FDWN) - b13-20 (FRVD)	Always	Below 1 Ω
b7-5 (FDWN) or b13-20 (FRVD) - Body ground	Always	10 kΩ or higher

Lifter Function

Click Location & Routing(b7,b13) Click Connector(b7) Click Connector(b13)

Tester Connection	Condition	Specified Condition
b7-3 (LUP) - b13-7 (LFTU)	Always	Below 1 Ω
b7-3 (LUP) or b13-7 (LFTU) - Body ground	Always	10 kΩ or higher
b7-8 (LDWN) - b13-21 (LFTD)	Always	Below 1 Ω
b7-8 (LDWN) or b13-21 (LFTD) - Body ground	Always	10 kΩ or higher

Lumbar Support Adjustment Function (Forward - Back)

Click Location & Routing(b7,b13) Click Connector(b7) Click Connector(b13)

Tester Connection	Condition	Specified Condition
b7-17 (R) - b13-18 (LFLR)	Always	Below 1 Ω
b7-17 (R) or b13-18 (LFLR) - Body ground	Always	10 kΩ or higher
b7-14 (H) - b13-4 (LFLF)	Always	Below 1 Ω
b7-14 (H) or b13-4 (LFLF) - Body ground	Always	10 kΩ or higher

REPLACE POSITION CONTROL ECU ASSEMBLY LH

REPAIR OR REPLACE HARNESS OR CONNECTOR

Power Seat Position is not Memorized

DESCRIPTION

If the SET switch is being pressed when one of the M1 or M2 switches is pressed, or if one of the M1 or M2 switches is pressed within 3 seconds of pressing the SET switch, the main body ECU (multiplex network body ECU) sends a memory request signal to the position control ECU assembly LH. After receiving the request signal, the position control ECU assembly LH memorizes the location data of each motor.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The front power seat control system (w/ Memory) uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
Click here
The seat position will not be stored if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a memorizing operation has failed, release all of the switches. The seat memory function will not operate unless the switches are released.
The seat will not return to the memorized position if 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a restoring operation has failed, release all of the switches. The seat memory restoring function will not operate unless the switches are released.
Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here

PROCEDURE

1.	CHECK FRONT POWER SEAT CONTROL OPERATION

(a) Check that each function of the power seat operates normally by using the front power seat switch assembly LH.

Click here

OK:

Each function of the power seat operates normally using the front power seat switch assembly LH.

GO TO PROBLEM SYMPTOMS TABLE

2.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Driver Seat Memory Switch (MM)

SET switch

OFF or ON

OFF: SET switch off

ON: SET switch on

Driver Seat Memory Switch (M1)

M1 switch

OFF or ON

OFF: M1 switch off

ON: M1 switch on

Driver Seat Memory Switch (M2)

M1 switch

OFF or ON

OFF: M2 switch off

ON: M2 switch on

Body Electrical > Main Body > Data List

Tester Display
Driver Seat Memory Switch (MM)
Driver Seat Memory Switch (M1)
Driver Seat Memory Switch (M2)

OK:

On the GTS screen, OFF or ON is displayed accordingly.

GO TO STEP 6

3.	PERFORM ACTIVE TEST USING GTS

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Driver Seat > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Buzzer	Buzzer operation	ON	-

Body Electrical > Driver Seat > Active Test

Tester Display
Buzzer

OK:

Buzzer sounds normally.

REPLACE POSITION CONTROL ECU ASSEMBLY LH

4.	REPLACE POSITION CONTROL ECU ASSEMBLY LH

(a) Replace the position control ECU assembly LH with a new or known good one.

Click here

5.	CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION

(a) Check the seat position memory and restoring functions.

Click here

OK:

Seat position memory and restoring functions operate normally.

END (POSITION CONTROL ECU ASSEMBLY LH WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

6.	INSPECT SEAT MEMORY SWITCH

Click here

REPLACE SEAT MEMORY SWITCH

7.	CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - SEAT MEMORY SWITCH - BODY GROUND)

(a) Disconnect the K15 main body ECU (multiplex network body ECU) connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Click Location & Routing(K15,O12) Click Connector(K15) Click Connector(O12)

Tester Connection	Condition	Specified Condition
K15-9 (MM) - O12-2 (MMRY)	Always	Below 1 Ω
K15-9 (MM) or O12-2 (MMRY) - Body ground	Always	10 kΩ or higher
K15-11 (M1) - O12-3 (1)	Always	Below 1 Ω
K15-11 (M1) or O12-3 (1) - Body ground	Always	10 kΩ or higher
K15-10 (M2) - O12-4 (2)	Always	Below 1 Ω
K15-10 (M2) or O12-4 (2) - Body ground	Always	10 kΩ or higher
O12-1 (E) - Body ground	Always	Below 1 Ω

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

Power Seat does not Return to Memorized Position

DESCRIPTION

When the M1 or M2 switch of the seat memory switch is pressed, a switch signal is sent to the main body ECU (multiplex network body ECU). Then, the main body ECU (multiplex network body ECU) sends a recall request signal to the position control ECU assembly LH. The position control ECU assembly LH operates each motor to move the seat to the memorized position.

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

NOTICE:

The front power seat control system (w/ Memory) uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
Click here
The seat position will not be stored if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a memorizing operation has failed, release all of the switches. The seat memory function will not operate unless the switches are released.
The seat will not return to the memorized position if 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a restoring operation has failed, release all of the switches. The seat memory restoring function will not operate unless the switches are released.
Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here

PROCEDURE

1.	CHECK FRONT POWER SEAT CONTROL OPERATION

(a) Check that each function of the power seat operates normally by using the front power seat switch LH.

Click here

OK:

Each function of the power seat operates normally using the front power seat switch LH.

GO TO PROBLEM SYMPTOMS TABLE

2.	CHECK SEAT POSITION MEMORY FUNCTION

(a) Check the seat position memory function.

Click here

OK:

Seat position memory function is normal.

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized)

3.	CHECK SEAT POSITION RESTORING FUNCTION

(a) Under each of the following conditions, check that the seat position restoring function operates by pressing the M1 or M2 switch.

Click here

The ignition switch is ON, and the shift lever is in P.*1
Within 180 seconds after the driver door is opened with the ignition switch off.*2
Within 60 seconds after the driver door is opened and then closed with the ignition switch off.*3

Result	Proceed to
Seat position restoring function does not operate at all.	A
Seat position restoring function does not operate when the condition is *1.	B
Seat position restoring function does not operate when the condition is 2. Seat position restoring function does not operate when the condition is 3.	C

GO TO STEP 7

GO TO STEP 8

4.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Driver Seat > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Memory No1	Seat position memorized with M1 switch	No Memory or Memory	Current memory status	-
Memory No2	Seat position memorized with M2 switch	No Memory or Memory	Current memory status	-

Body Electrical > Driver Seat > Data List

Tester Display
Memory No1
Memory No2

OK:

Memory is displayed on the GTS screen.

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized)

5.	REPLACE POSITION CONTROL ECU ASSEMBLY LH

(a) Replace the position control ECU assembly LH with a new or known good one.

Click here

6.	CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION

(a) Check the seat position memory and restoring functions.

Click here

OK:

Seat position memory and restoring functions operate normally.

END (POSITION CONTROL ECU ASSEMBLY LH WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

7.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Powertrain > Hybrid Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Shift Position	Current shift state	P / R / N / D / B (S)	The selected shift state is displayed	-

Powertrain > Hybrid Control > Data List

Tester Display
Shift Position

OK:

On the GTS screen, the current shift state is displayed accordingly.

REPLACE POSITION CONTROL ECU ASSEMBLY LH

GO TO ELECTRONIC SHIFT LEVER SYSTEM

8.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Courtesy Switch Status

Front door courtesy light switch assembly (RH) signal

Close or Open

Close: Front door RH closed

Open: Front door RH open

FL Door Courtesy Switch Status

Front door courtesy light switch assembly (LH) signal

Close or Open

Close: Front door LH closed

Open: Front door LH open

Body Electrical > Main Body > Data List

Tester Display
FR Door Courtesy Switch Status
FL Door Courtesy Switch Status

OK:

On the GTS screen, Close or Open is displayed accordingly.

REPLACE POSITION CONTROL ECU ASSEMBLY LH

GO TO LIGHTING SYSTEM (Proceed to Front Door Courtesy Switch Circuit)

Wireless Transmitter Memory Function does not Operate

DESCRIPTION

With the ignition switch ON and the driver door closed, pressing the manual lock or unlock switch on the multiplex network master switch assembly while holding a seat memory switch (M1 or M2 switch) will register the transmitter recognition code into the seat memory switch that was pressed. After registration is completed, the answer back buzzer sounds.

CAUTION / NOTICE / HINT

NOTICE:

The front power seat control system (w/ Memory) uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
Click here
The seat position will not be stored if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a memorizing operation has failed, release all of the switches. The seat memory function will not operate unless the switches are released.
The seat will not return to the memorized position if 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a restoring operation has failed, release all of the switches. The seat memory restoring function will not operate unless the switches are released.
Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.
Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly), refer to Registration.
Click here

PROCEDURE

1.	CHECK MANUAL DOOR LOCK FUNCTION

(a) Check the manual lock/unlock function by using the door control switch (multiplex network master switch assembly).

Click here

OK:

Manual lock/unlock function operates normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM

2.	CHECK SMART KEY SYSTEM (for Start Function)

(a) Check that the hybrid control system starts operates normally when the ignition switch is pressed while carrying the electrical key transmitter sub-assembly and with the brake pedal depressed.

OK:

Hybrid control system starts normally.

GO TO SMART KEY SYSTEM (for Start Function)

3.	CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION

(a) Check the seat position memory and restoring functions.

Click here

Result	Proceed to
OK	A
NG (Seat position memory function does not operate normally)	B
NG (Seat position restoring function does not operate normally)	C

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized)

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat does not Return to Memorized Position)

4.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Courtesy Switch Status

Front door courtesy light switch assembly (RH) signal

Close or Open

Close: Front door RH closed

Open: Front door RH open

FL Door Courtesy Switch Status

Front door courtesy light switch assembly (LH) signal

Close or Open

Close: Front door LH closed

Open: Front door LH open

Body Electrical > Main Body > Data List

Tester Display
FR Door Courtesy Switch Status
FL Door Courtesy Switch Status

OK:

On the GTS screen, Close or Open is displayed accordingly.

GO TO LIGHTING SYSTEM (Front Door Courtesy Switch Circuit)

5.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)

(a) Check the memory registration of the memory call function.

Click here

OK:

A seat position can be registered normally.

GO TO STEP 8

6.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
MEM Switch No. with Key ID 1	Memory switch linked with key ID1	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID1 D MEM SW1: M1 switch linked with key ID1 D MEM SW2: M2 switch linked with key ID1 D MEM SW3: M3 switch linked with key ID1*	-
MEM Switch No. with Key ID 2	Memory switch linked with key ID2	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID2 D MEM SW1: M1 switch linked with key ID2 D MEM SW2: M2 switch linked with key ID2 D MEM SW3: M3 switch linked with key ID2*	-
MEM Switch No. with Key ID 3	Memory switch linked with key ID3	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID3 D MEM SW1: M1 switch linked with key ID3 D MEM SW2: M2 switch linked with key ID3 D MEM SW3: M3 switch linked with key ID3*	-
MEM Switch No. with Key ID 4	Memory switch linked with key ID4	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID4 D MEM SW1: M1 switch linked with key ID4 D MEM SW2: M2 switch linked with key ID4 D MEM SW3: M3 switch linked with key ID4*	-
MEM Switch No. with Key ID 5	Memory switch linked with key ID5	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID5 D MEM SW1: M1 switch linked with key ID5 D MEM SW2: M2 switch linked with key ID5 D MEM SW3: M3 switch linked with key ID5*	-
MEM Switch No. with Key ID 6	Memory switch linked with key ID6	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID6 D MEM SW1: M1 switch linked with key ID6 D MEM SW2: M2 switch linked with key ID6 D MEM SW3: M3 switch linked with key ID6*	-
MEM Switch No. with Key ID 7	Memory switch linked with key ID7	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID7 D MEM SW1: M1 switch linked with key ID7 D MEM SW2: M2 switch linked with key ID7 D MEM SW3: M3 switch linked with key ID7*	-

*: Not applicable

Body Electrical > Main Body > Data List

Tester Display
MEM Switch No. with Key ID 1
MEM Switch No. with Key ID 2
MEM Switch No. with Key ID 3
MEM Switch No. with Key ID 4
MEM Switch No. with Key ID 5
MEM Switch No. with Key ID 6
MEM Switch No. with Key ID 7

OK:

A seat position memory switch is linked to the electrical key transmitter sub-assembly.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

7.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

(a) Check the memory registration and automatic memory call function of the memory call function.

Click here

OK:

A seat position can be registered and the automatic memory call function operates normally.

USE SIMULATION METHOD TO CHECK

GO TO OTHER DIAGNOSIS PROCEDURE (Wireless-linked Return Function does not Operate)

8.	REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Replace the main body ECU (multiplex network body ECU) with a new one.

Click here

9.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)

(a) Check the memory registration of the memory call function.

Click here

OK:

A seat position can be registered normally.

END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)

10.	REPLACE POSITION CONTROL ECU ASSEMBLY LH

(a) Replace the position control ECU assembly LH with a new or known good one.

Click here

11.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)

(a) Check the memory registration of the memory call function.

Click here

OK:

A seat position can be registered normally.

END (POSITION CONTROL ECU ASSEMBLY LH WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Wireless-linked Return Function does not Operate

DESCRIPTION

When a door is unlocked using the wireless unlock function, the certification ECU (smart key ECU assembly) sends a key ID signal to the main body ECU (multiplex network body ECU). When a door is unlocked using the entry unlock function, the certification ECU (smart key ECU assembly) sends a door unlock signal and key ID signal to the main body ECU (multiplex network body ECU). When the main body ECU (multiplex network body ECU) receives the door unlock signal, it stores the key ID. When the driver door is opened, the memory call information of the stored key ID is sent to each driving position related control ECU. Each control ECU receives the information and then performs the memory call operation according to predetermined control timing values.

CAUTION / NOTICE / HINT

NOTICE:

The front power seat control system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.
Click here
The seat position will not be stored if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.
If a memorizing operation has failed, release all of the switches. The seat memory function will not operate unless the switches are released.
Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
Click here
Initializing the position control ECU assembly LH will clear the seat position memory.
Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly), refer to Registration.
Click here

PROCEDURE

1.	CHECK FRONT POWER SEAT OPERATION

(a) Check the operation of the power seat.

Click here

(b) Check the seat position memory function.

Click here

(d) Check the operation of memory registration of the memory call function.

Click here

Result	Proceed to
OK	A
NG (Power seat operation)	B
NG (Seat position memory function)	C
NG (Seat position restoration function)	D
NG (Memory registration)	E

GO TO PROBLEM SYMPTOMS TABLE

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized)

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat does not Return to Memorized Position)

GO TO OTHER DIAGNOSIS PROCEDURE (Wireless Transmitter Memory Function does not Operate)

2.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

(a) Check the memory registration and automatic memory call function of the memory call function.

Click here

Result	Proceed to
Memory call function linked with the wireless unlock function does not operate.	A
Memory call function linked with the entry unlock function does not operate.	B
Memory call function linked with the wireless unlock function and entry unlock function both do not operate.	C

GO TO STEP 6

GO TO STEP 9

3.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check the wireless unlock function of the wireless door lock control system.

Click here

OK:

Wireless unlock function is normal.

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

4.	REPLACE POSITION CONTROL ECU ASSEMBLY LH

(a) Replace the position control ECU assembly LH with a new or known good one.

Click here

5.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

(a) Check the memory registration and automatic memory call function of the memory call function.

Click here

OK:

Memory call function linked with the wireless unlock function operates normally.

END (POSITION CONTROL ECU ASSEMBLY LH WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

6.	CHECK SMART KEY SYSTEM (for Entry Function)

(a) Check the entry unlock function of the smart key system.

Click here

OK:

Entry unlock function is normal.

GO TO SMART KEY SYSTEM (for Entry Function)

7.	REPLACE POSITION CONTROL ECU ASSEMBLY LH

(a) Replace the position control ECU assembly LH with a new or known good one.

Click here

8.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

(a) Check the memory registration and automatic memory call function of the memory call function.

Click here

OK:

Memory call function linked with the entry unlock function operates normally.

END (POSITION CONTROL ECU ASSEMBLY LH WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

9.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
MEM Switch No. with Key ID 1	Memory switch linked with key ID1	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID1 D MEM SW1: M1 switch linked with key ID1 D MEM SW2: M2 switch linked with key ID1 D MEM SW3: M3 switch linked with key ID1*	-
MEM Switch No. with Key ID 2	Memory switch linked with key ID2	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID2 D MEM SW1: M1 switch linked with key ID2 D MEM SW2: M2 switch linked with key ID2 D MEM SW3: M3 switch linked with key ID2*	-
MEM Switch No. with Key ID 3	Memory switch linked with key ID3	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID3 D MEM SW1: M1 switch linked with key ID3 D MEM SW2: M2 switch linked with key ID3 D MEM SW3: M3 switch linked with key ID3*	-
MEM Switch No. with Key ID 4	Memory switch linked with key ID4	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID4 D MEM SW1: M1 switch linked with key ID4 D MEM SW2: M2 switch linked with key ID4 D MEM SW3: M3 switch linked with key ID4*	-
MEM Switch No. with Key ID 5	Memory switch linked with key ID5	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID5 D MEM SW1: M1 switch linked with key ID5 D MEM SW2: M2 switch linked with key ID5 D MEM SW3: M3 switch linked with key ID5*	-
MEM Switch No. with Key ID 6	Memory switch linked with key ID6	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID6 D MEM SW1: M1 switch linked with key ID6 D MEM SW2: M2 switch linked with key ID6 D MEM SW3: M3 switch linked with key ID6*	-
MEM Switch No. with Key ID 7	Memory switch linked with key ID7	NONE, D MEM SW1, D MEM SW2 or D MEM SW3*	NONE: No switches linked with key ID7 D MEM SW1: M1 switch linked with key ID7 D MEM SW2: M2 switch linked with key ID7 D MEM SW3: M3 switch linked with key ID7*	-

*: Not applicable

Body Electrical > Main Body > Data List

Tester Display
MEM Switch No. with Key ID 1
MEM Switch No. with Key ID 2
MEM Switch No. with Key ID 3
MEM Switch No. with Key ID 4
MEM Switch No. with Key ID 5
MEM Switch No. with Key ID 6
MEM Switch No. with Key ID 7

(b) Read the Data List according to the display on the GTS.

Body Electrical > Driver Seat > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Memory No1	Seat position memorized with M1 switch	No Memory or Memory	Current memory status	-
Memory No2	Seat position memorized with M2 switch	No Memory or Memory	Current memory status	-

Body Electrical > Driver Seat > Data List

Tester Display
Memory No1
Memory No2

OK:

A seat position has been memorized for the seat position memory switch linked to the electrical key transmitter sub-assembly. (For example, the value of "MEM Switch No. with Key ID1" is D MEM SW1 and the value of "Memory No1" is Memory.)

PERFORM MEMORY CALL REGISTRATION

10.	READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Courtesy Switch Status

Front door courtesy light switch assembly (RH) signal

Close or Open

Close: Front door RH closed

Open: Front door RH open

FL Door Courtesy Switch Status

Front door courtesy light switch assembly (LH) signal

Close or Open

Close: Front door LH closed

Open: Front door LH open

Body Electrical > Main Body > Data List

Tester Display
FR Door Courtesy Switch Status
FL Door Courtesy Switch Status

OK:

On the GTS screen, Close or Open is displayed accordingly.

GO TO LIGHTING SYSTEM (Front Door Courtesy Switch Circuit)

11.	REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Replace the main body ECU (multiplex network body ECU) with a new one.

Click here

12.	CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

(a) Check the memory registration and automatic memory call function of the memory call function.

Click here

OK:

Memory call functions linked with the wireless unlock function and entry unlock function operate normally.

END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Power Seat Power Easy Access System Function does not Operate

DESCRIPTION

Perform either of the following and check that the driver seat moves rearward:
- With the ignition switch off, the shift lever in P and at a vehicle speed of less than 10 km/h, unfasten the driver seat seat belt.
- With the shift lever in P, the driver seat seat belt unfastened and at a Toyota Prius vehicle speed of less than 10 km/h, turn the ignition switch off.
Perform either of the following and check that the driver seat moves forward:
- With the ignition switch off, fasten the driver seat seat belt.
- With the driver seat seat belt unfastened, turn the ignition switch from off to ACC or ON.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.
The front power seat control system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.
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Make sure to initialize the position control ECU assembly LH after replacing the position control ECU assembly LH, seat assembly or any related parts (including removal and installation).
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Initializing the position control ECU assembly LH will clear the seat position memory.
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
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