Toyota Prius: Fuel Lid Opener System

Toyota Prius (XW60) 2023-2025 Service Manual / Vehicle Exterior / Door / Hatch / Fuel Lid Opener System

Precaution
Parts Location
System Diagram
System Description
How To Proceed With Troubleshooting
Operation Check
Problem Symptoms Table
Terminals Of Ecu
Data List / Active Test
Fuel Lid Opener 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

PRECAUTIONS FOR REMOVAL, INSTALLATION AND REPLACEMENT OF COMPONENTS

(a) After replacing certain components, it may be necessary to update the ECU security key.

Click here

Parts Location

PARTS LOCATION

ILLUSTRATION

*A	for M20A-FXS	*B	for 2ZR-FXE
*1	FUEL LID OPENER SWITCH	*2	DLC3
*3	POWER DISTRIBUTION BOX ASSEMBLY - FUEL OPN FUSE - FUEL OPN RELAY/FUEL LOCK RELAY	*4	ECM
*5	NO.1 ENGINE ROOM RELAY BLOCK AND NO.1 JUNCTION BLOCK ASSEMBLY - EFI NO.3 FUSE	*6	FUEL LID WITH MOTOR LOCK ASSEMBLY - FUEL LID COURTESY SWITCH
*7	FUEL LID WITH MOTOR LOCK ASSEMBLY	*8	COMBINATION METER ASSEMBLY

System Diagram

SYSTEM DIAGRAM

System Description

SYSTEM DESCRIPTION

for M20A-FXS

When the fuel lid opener switch is operated, the pressure in the fuel tank is decreased and a message is displayed on the multi-information display. After the pressure has decreased, the ECM turns on the FUEL OPN relay/FUEL LOCK relay to operate the fuel lid with motor lock assembly to open the fuel lid. When the fuel lid is opened, a fuel lid courtesy switch signal is output and a message is displayed on the multi-information display.

for 2ZR-FXE

When the fuel lid opener switch is operated, the fuel lid with motor lock assembly opens the fuel lid.

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the fuel lid opener system.
*: Use the GTS.

PROCEDURE

1.	Toyota Prius Vehicle BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

The following 5 items are important points for problem analysis:

What	Toyota Prius Vehicle model, system name
When	Date, time, occurrence frequency
Where	Road conditions
Under what conditions?	Driving conditions, weather conditions
How did it happen?	Problem symptoms

3.	INSPECT AUXILIARY BATTERY VOLTAGE

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

Standard voltage:

11 to 14 V

HINT:

A simple method to determine whether the auxiliary battery is discharged is to operate the horn.
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.

(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.	SYSTEM CHECK

(a) Check the Toyota Prius vehicle specification.

Result	Proceed to
for M20A-FXS	A
for 2ZR-FXE	B

GO TO STEP 6

5.	CHECK FOR DTC*

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(b) Check for SFI system DTCs.

Powertrain > Engine > Trouble Codes

OK:

SFI system DTCs are not output.

GO TO SFI SYSTEM

6.	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

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

7.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Data List / Active Test

Click here

(b) Operation Check

Click here

(d) Inspection

8.	REPAIR OR REPLACE

9.	CONFIRMATION TEST

END

Operation Check

OPERATION CHECK

CHECK FUEL LID OPENER SYSTEM

(a) Push the fuel lid opener switch and check that messages are displayed on the multi-information display in the combination meter assembly and the fuel lid opens.*1

(b) Push the fuel lid opener switch and check that the fuel lid opens.*2

*1: for M20A-FXS
*2: for 2ZR-FXE

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the Toyota Prius vehicle and a DTC may be stored.
After replacing combination meter assembly, it may be necessary to update the ECU security key.
Click here

HINT:

If a malfunction occurs in the close tank valve assembly or vapor pressure sensor, the fuel lid opener does not operate due to ECM control.
If the fuel lid opener operates after a short time, the close tank valve assembly or fuel tank vent hose may be clogged.

Fuel Lid Opener System (for M20A-FXS)

Symptom	Suspected Area	Link
Fuel lid opener does not operate	Proceed to "Fuel Lid Opener does not Operate"
Messages are not displayed on the multi-information display in the combination meter assembly	Harness or connector	-
	Combination meter assembly
	ECM

Fuel Lid Opener System (for 2ZR-FXE)

Symptom	Suspected Area	Link
Fuel lid opener does not operate	Proceed to "Fuel Lid Opener does not Operate"

Terminals Of Ecu

TERMINALS OF ECU

CHECK ECM (for M20A-FXS)

HINT:

The standard voltage and waveform between each pair of the ECM terminals are shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
A92-31 (LIDO) - A92-10 (E1)	Fuel lid with motor lock assembly (fuel lid courtesy switch) signal	Fuel lid closed	Below 1 V
A92-31 (LIDO) - A92-10 (E1)		Fuel lid open	11 to 14 V
A92-38 (FUEL) - A92-10 (E1)	Fuel lid opener switch signal	fuel lid opener switch pressed	Below 1 V
A92-38 (FUEL) - A92-10 (E1)	Fuel lid opener switch signal	fuel lid opener switch not pressed	11 to 14 V
A92-41 (LSTM) - A92-10 (E1)	Fuel lid operation signal for combination meter assembly	"Close Fuel Lid" displayed on multi-information display	Pulse generation (see waveform 1)
		"Ready to Refuel" displayed on multi-information display	Pulse generation (see waveform 2)
		"Please Wait Fuel Door Opening" displayed on multi-information display	Pulse generation (see waveform 3)
A92-44 (FREL) - A92-10 (E1)	Fuel lid with motor lock assembly operation signal	Fuel lid with motor lock assembly operating	Below 1 V
A92-44 (FREL) - A92-10 (E1)	Fuel lid with motor lock assembly operation signal	Fuel lid with motor lock assembly not operating	11 to 14 V

(a) Using an oscilloscope, check waveform 1.

Waveform 1 (Reference)

Item	Content
Terminal No. (Symbol)	A92-41 (LSTM) - A92-10 (E1)
Tool Setting	5 V/DIV., 20 ms./DIV.
Condition	"Close Fuel Lid" displayed on multi-information display

HINT:

This waveform is output when the fuel lid opener switch is operated if the fuel lid is open and any of the following conditions are met:

The Toyota Prius vehicle has been driven for 1 km (0.6 mile) or more at a speed of 50 km/h (31 mph) or more.
30 minutes or more have elapsed since the fuel lid opener switch was operated.

(b) Using an oscilloscope, check waveform 2.

Waveform 2 (Reference)

Item	Content
Terminal No. (Symbol)	A92-41 (LSTM) - A92-10 (E1)
Tool Setting	5 V/DIV., 20 ms./DIV.
Condition	"Ready to Refuel" displayed on multi-information display

Waveform 3 (Reference)

Item	Content
Terminal No. (Symbol)	A92-41 (LSTM) - A92-10 (E1)
Tool Setting	5 V/DIV., 20 ms./DIV.
Condition	"Please Wait Fuel Door Opening" displayed on multi-information display

HINT:

This waveform is output when the internal pressure of the fuel tank is higher than the ambient pressure when the fuel lid opener switch is operated.

CHECK ECM (for 2ZR-FXE)

HINT:

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
A91-60 (FUEL) - A91-17 (E1)	Fuel lid opener switch signal	fuel lid opener switch pressed	Below 1 V
A91-60 (FUEL) - A91-17 (E1)	Fuel lid opener switch signal	fuel lid opener switch not pressed	11 to 14 V
A91-28 (FREL) - A91-17 (E1)	Fuel lid with motor lock assembly operation signal	Fuel lid with motor lock assembly operating	Below 1 V
A91-28 (FREL) - A91-17 (E1)	Fuel lid with motor lock assembly operation signal	Fuel lid with motor lock assembly not operating	11 to 14 V

CHECK COMBINATION METER ASSEMBLY (for M20A-FXS)

(a) Disconnect the K18 combination meter assembly connector.

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

Terminal No.	Terminal Description	Condition	Specified Condition
K18-5 (B) - Body ground	Auxiliary battery	Ignition switch off	11 to 14 V
K18-6 (IG ) - Body ground	Ignition switch signal	Ignition switch off	Below 1 V
K18-6 (IG ) - Body ground	Ignition switch signal	Ignition switch ON	11 to 14 V
K18-1 (EP) - Body ground	Ground	Always	Below 1 Ω
K18-2 (ES) - Body ground	Ground	Always	Below 1 Ω

(d) Measure the waveform according to the value(s) in the table below.

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
K18-28 (LST1) - Body ground	Fuel lid operation signal for combination meter assembly	"Close Fuel Lid" displayed on multi-information display	Pulse generation (see waveform 1)
"Ready to Refuel" displayed on multi-information display	Pulse generation (see waveform 2)
"Please Wait Fuel Door Opening" displayed on multi-information display	Pulse generation (see waveform 3)

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

K18-28 (LST1) - Body ground

Fuel lid operation signal for combination meter assembly

"Close Fuel Lid" displayed on multi-information display

Pulse generation

(see waveform 1)

"Ready to Refuel" displayed on multi-information display

Pulse generation

(see waveform 2)

"Please Wait Fuel Door Opening" displayed on multi-information display

Pulse generation

(see waveform 3)

(1) Using an oscilloscope, check waveform 1.

Waveform 1 (Reference)

Item	Content
Terminal No. (Symbol)	K18-28 (LST1) - Body ground
Tool Setting	5 V/DIV., 20 ms./DIV.
Condition	"Close Fuel Lid" displayed on multi-information display

HINT:

This waveform is output when the fuel lid opener switch is operated if the fuel lid is open and any of the following conditions are met:

The Toyota Prius vehicle has been driven for 1 km (0.6 mile) or more at a speed of 50 km/h (31 mph) or more.
30 minutes or more have elapsed since the fuel lid opener switch was operated.

(2) Using an oscilloscope, check waveform 2.

Waveform 2 (Reference)

Item	Content
Terminal No. (Symbol)	K18-28 (LST1) - Body ground
Tool Setting	5 V/DIV., 20 ms./DIV.
Condition	"Ready to Refuel" displayed on multi-information display

(3) Using an oscilloscope, check waveform 3.

Waveform 3 (Reference)

Item	Content
Terminal No. (Symbol)	K18-28 (LST1) - Body ground
Tool Setting	5 V/DIV., 20 ms./DIV.
Condition	"Please Wait Fuel Door Opening" displayed on multi-information display

HINT:

This waveform is output when the internal pressure of the fuel tank is higher than the ambient pressure when the fuel lid opener switch is operated.

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

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.

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.

(a) According to the display on the GTS, read the "Data List".

Powertrain > Engine > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Fuel Filler Opener	Fuel lid with motor lock assembly status	OFF or ON	OFF: Fuel lid with motor lock assembly not operating ON: Fuel lid with motor lock assembly operating	for M20A-FXS
Fuel Lid SW	Fuel lid opener switch status	Close or Open	Close: Fuel lid opener switch not pushed Open: Fuel lid opener switch pushed	-
Fuel Lid Sensor SW	Fuel lid with motor lock assembly (fuel lid courtesy switch) status	Close or Open	Close: Fuel lid closed Open: Fuel lid open	for M20A-FXS

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Fuel Filler Opener

Fuel lid with motor lock assembly status

OFF or ON

OFF: Fuel lid with motor lock assembly not operating

ON: Fuel lid with motor lock assembly operating

for M20A-FXS

Fuel Lid SW

Fuel lid opener switch status

Close or Open

Close: Fuel lid opener switch not pushed

Open: Fuel lid opener switch pushed

Fuel Lid Sensor SW

Fuel lid with motor lock assembly (fuel lid courtesy switch) status

Close or Open

Close: Fuel lid closed

Open: Fuel lid open

for M20A-FXS

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) According to the display on GTS perform the "Active Test".

Powertrain > Engine > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Activate the Fuel Filler Opener	Activate fuel lid with motor lock assembly	OFF or ON	for M20A-FXS

Fuel Lid Opener does not Operate

DESCRIPTION

When the fuel lid opener switch is pushed, a fuel lid opener switch signal is sent to the ECM. The ECM turns on the FUEL OPN relay/FUEL LOCK relay and the fuel lid with motor lock assembly opens the fuel lid. When the fuel lid is open, a fuel lid courtesy switch signal is output from the fuel lid with motor lock assembly.

WIRING DIAGRAM

for M20A-FXS

for 2ZR-FXE

CAUTION / NOTICE / HINT

HINT:

Inspect the fuses for circuits related to this system before performing the following procedure.
If a malfunction occurs in the close tank valve assembly or vapor pressure sensor, the fuel lid opener does not operate due to ECM control.
If the fuel lid opener operates after a short time, the close tank valve assembly or fuel tank vent hose may be clogged.

PROCEDURE

1.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
for M20A-FXS	A
for 2ZR-FXE	B

GO TO STEP 16

2.	CHECK FOR DTC

(a) Using the GTS, check that DTCs related to the close tank valve assembly or vapor pressure sensor are not output.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTCs related to the close tank valve assembly or vapor pressure sensor are not output	A
DTCs related to the close tank valve assembly or vapor pressure sensor are output	B

GO TO RELEVANT DIAGNOSTIC TROUBLE CODE PROCEDURE

3.	PERFORM ACTIVE TEST USING GTS

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

Powertrain > Engine > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Activate the Fuel Filler Opener	Activate fuel lid with motor lock assembly	OFF or ON	-

Powertrain > Engine > Active Test

Tester Display
Activate the Fuel Filler Opener

OK:

The fuel lid with motor lock assembly operates normally.

GO TO STEP 11

4.	READ VALUE USING GTS (Fuel Lid SW)

(a) Enter the following menus: Powertrain / Engine / Data List.

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

Powertrain > Engine > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Fuel Lid SW

Fuel lid opener switch status

Close or Open

Close: Fuel lid opener switch not pushed

Open: Fuel lid opener switch pushed

Powertrain > Engine > Data List

Tester Display
Fuel Lid SW

OK:

The GTS display changes correctly in response to the operation of the fuel lid opener switch.

GO TO STEP 9

5.	READ VALUE USING GTS (FUEL LID SENSOR SW)

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

Powertrain > Engine > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Fuel Lid Sensor SW

Fuel lid courtesy switch status

Close or Open

Close: Fuel lid closed

Open: Fuel lid open

Powertrain > Engine > Data List

Tester Display
Fuel Lid Sensor SW

OK:

The GTS display changes correctly in response to the operation of the fuel lid courtesy switch (fuel lid with motor lock assembly).

GO TO STEP 7

6.	CHECK CLOSE TANK VALVE ASSEMBLY OR FUEL TANK VENT HOSE

(a) Check the close tank valve assembly or fuel tank vent hose for clogging.

Click here

OK:

The close tank valve assembly or fuel tank vent hose is not clogged.

REPLACE ECM

REMOVE THE CLOGGING

7.	INSPECT FUEL LID WITH MOTOR LOCK ASSEMBLY (FUEL LID COURTESY SWITCH)

(a) Remove the fuel lid with motor lock assembly.

Click here

(b) Inspect the fuel lid with motor lock assembly.

Click here

REPLACE FUEL LID LOCK WITH MOTOR ASSEMBLY

8.	CHECK HARNESS AND CONNECTOR (FUEL LID WITH MOTOR LOCK ASSEMBLY - ECM)

(a) Disconnect the A92 ECM connector.

(b) Disconnect the R37 fuel lid with motor lock assembly connector.

Standard Resistance:

Click Location & Routing(R37,A92) Click Connector(R37) Click Connector(A92)

Tester Connection	Condition	Specified Condition
R37-3 (B) - A92-31 (LIDO)	Always	Below 1 Ω
R37-3 (B) or A92-31 (LIDO) - Body ground	Always	10 kΩ or higher

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.	INSPECT FUEL LID OPENER SWITCH

(a) Remove the fuel lid opener switch.

Click here

(b) Inspect the fuel lid opener switch.

Click here

REPLACE FUEL LID OPENER SWITCH

10.	CHECK HARNESS AND CONNECTOR (FUEL LID OPENER SWITCH - ECM AND BODY GROUND)

(a) Disconnect the A92 ECM connector.

(b) Disconnect the K50 fuel lid opener switch connector.

Standard Resistance:

Click Location & Routing(K50,A92) Click Connector(K50) Click Connector(A92)

Tester Connection	Condition	Specified Condition
K50-5 (IG) - A92-38 (FUEL)	Always	Below 1 Ω
K50-5 (IG) or A92-38 (FUEL) - Body ground	Always	10 kΩ or higher
K50-2 (E) - Body ground	Always	Below 1 Ω

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	INSPECT FUEL LID WITH MOTOR LOCK ASSEMBLY (MOTOR OPERATION)

(a) Remove the fuel lid with motor lock assembly.

Click here

(b) Inspect the fuel lid with motor lock assembly.

Click here

REPLACE FUEL LID WITH MOTOR LOCK ASSEMBLY

12.	CHECK HARNESS AND CONNECTOR (FUEL LID WITH MOTOR LOCK ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

(a) Disconnect the R37 fuel lid with motor lock assembly connector.

(b) Disconnect the R17 power distribution box assembly connector.

Standard Resistance:

Click Location & Routing(R37,R17) Click Connector(R37) Click Connector(R17)

Tester Connection	Condition	Specified Condition
R37-1 (B) - R17-29	Always	Below 1 Ω
R37-2 (E) - Body ground	Always	Below 1 Ω
R37-1 (B) or R17-29 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.	CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BATTERY)

(a) Disconnect the A12, A13, K20 and K21 power distribution box assembly connectors.

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

Standard Voltage:

Click Location & Routing(A13,A12) Click Connector(A13) Click Connector(A12)

Tester Connection	Switch Condition	Specified Condition
A13-1 - Body ground	Ignition switch off	11 to 14 V
A12-1 - Body ground	Ignition switch ON	11 to 14 V
A12-1 - Body ground	Ignition switch off	Below 1 V

Standard Resistance:

Click Location & Routing(K20,K21) Click Connector(K20) Click Connector(K21)

Tester Connection	Switch Condition	Specified Condition
K20-36 - Body ground	Always	Below 1 Ω
K21-41 - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.	CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - ECM)

(a) Disconnect the A12 power distribution box assembly connector.

(b) Disconnect the A92 ECM connector.

Standard Resistance:

Click Location & Routing(A12,A92) Click Connector(A12) Click Connector(A92)

Tester Connection	Condition	Specified Condition
A12-16 - A92-44 (FREL)	Always	Below 1 Ω
A12-16 or A92-44 (FREL) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.	INSPECT POWER DISTRIBUTION BOX ASSEMBLY (FUEL OPN RELAY/FUEL LOCK RELAY)

(a) Remove the power distribution box assembly.

Click here

(b) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click here

Standard Resistance:

Click Location & Routing(A13,R17,K20,K21) Click Connector(A13) Click Connector(R17) Click Connector(K20) Click Connector(K21)

Tester Connection	Condition	Specified Condition
A13-1 - R17-29	Voltage applied between terminals A12-1 and A12-16	Below 1 Ω
A13-1 - R17-29	Voltage not applied between terminals A12-1 and A12-16	10 kΩ or higher
K20-36 - R17-29	Voltage not applied between terminals A12-1 and A12-16	Below 1 Ω
K21-41 - R17-29	Voltage not applied between terminals A12-1 and A12-16	Below 1 Ω
K20-36 - R17-29	Voltage applied between terminals A12-1 and A12-16	10 kΩ or higher
K21-41 - R17-29	Voltage applied between terminals A12-1 and A12-16	10 kΩ or higher

REPLACE ECM

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

16.	READ VALUE USING GTS (Fuel Lid SW)

(a) Enter the following menus: Powertrain / Engine / Data List.

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

Powertrain > Engine > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Fuel Lid SW

Fuel lid opener switch status

Close or Open

Close: Fuel lid opener switch not pushed

Open: Fuel lid opener switch pushed

Powertrain > Engine > Data List

Tester Display
Fuel Lid SW

OK:

The GTS display changes correctly in response to the operation of the fuel lid opener switch.

GO TO STEP 22

17.	INSPECT FUEL LID WITH MOTOR LOCK ASSEMBLY (MOTOR OPERATION)

(a) Remove the fuel lid with motor lock assembly.

Click here

(b) Inspect the fuel lid with motor lock assembly.

Click here

REPLACE FUEL LID WITH MOTOR LOCK ASSEMBLY

18.	CHECK HARNESS AND CONNECTOR (FUEL LID WITH MOTOR LOCK ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

(a) Disconnect the R37 fuel lid with motor lock assembly connector.

(b) Disconnect the R17 power distribution box assembly connector.

Standard Resistance:

Click Location & Routing(R37,R17) Click Connector(R37) Click Connector(R17)

Tester Connection	Condition	Specified Condition
R37-1 (B) - R17-29	Always	Below 1 Ω
R37-2 (E) - Body ground	Always	Below 1 Ω
R37-1 (B) or R17-29 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

19.	CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BATTERY)

(a) Disconnect the A12, A13, K20 and K21 power distribution box assembly connectors.

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

Standard Voltage:

Click Location & Routing(A13,A12) Click Connector(A13) Click Connector(A12)

Tester Connection	Switch Condition	Specified Condition
A13-1 - Body ground	Ignition switch off	11 to 14 V
A12-1 - Body ground	Ignition switch ON	11 to 14 V
A12-1 - Body ground	Ignition switch off	Below 1 V

Standard Resistance:

Click Location & Routing(K20,K21) Click Connector(K20) Click Connector(K21)

Tester Connection	Switch Condition	Specified Condition
K20-36 - Body ground	Always	Below 1 Ω
K21-41 - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

20.	CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - ECM)

(a) Disconnect the A12 power distribution box assembly connector.

(b) Disconnect the A91 ECM connector.

Standard Resistance:

Click Location & Routing(A12,A91) Click Connector(A12) Click Connector(A91)

Tester Connection	Condition	Specified Condition
A12-16 - A91-28 (FREL)	Always	Below 1 Ω
A12-16 or A91-28 (FREL) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.	INSPECT POWER DISTRIBUTION BOX ASSEMBLY (FUEL OPN RELAY/FUEL LOCK RELAY)

(a) Remove the power distribution box assembly.

Click here

(b) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click here

Standard Resistance:

Click Location & Routing(A13,R17,K20,K21) Click Connector(A13) Click Connector(R17) Click Connector(K20) Click Connector(K21)

Tester Connection	Condition	Specified Condition
A13-1 - R17-29	Voltage applied between terminals A12-1 and A12-16	Below 1 Ω
A13-1 - R17-29	Voltage not applied between terminals A12-1 and A12-16	10 kΩ or higher
K20-36 - R17-29	Voltage not applied between terminals A12-1 and A12-16	Below 1 Ω
K21-41 - R17-29	Voltage not applied between terminals A12-1 and A12-16	Below 1 Ω
K20-36 - R17-29	Voltage applied between terminals A12-1 and A12-16	10 kΩ or higher
K21-41 - R17-29	Voltage applied between terminals A12-1 and A12-16	10 kΩ or higher