Toyota Prius: Electronically Controlled Brake System

Monitor Description

Description of what the skid control ECU monitors and how it detects malfunctions (monitoring purpose and details).

Related DTCs

Group of diagnostic trouble codes that are output by the skid control ECU based on the same malfunction detection logic.

Typical Enabling Conditions

Preconditions that allow the skid control ECU to detect malfunctions.

With all preconditions satisfied, the skid control ECU stores a DTC when the monitored value(s) exceeds the malfunction threshold(s).

Sequence of Operation

The priority order that is applied to monitoring if multiple sensors and components are used to detect the malfunction.

While one sensor is being monitored, the next sensor or component will not be monitored.

Required Sensors/Components

The sensors and components that are used by the skid control ECU to detect malfunctions.

Frequency of Operation

The number of times that the skid control ECU checks for malfunctions per driving cycle.

"Continuous" means that the skid control ECU checks for malfunctions every time the enabling conditions are met.

"During initial checking" means that the skid control ECU checks for malfunctions for approximately 3 seconds after the ignition switch is turned to ON (while the initial check being performed).

"After ignition switch off" means that after the ignition switch is turned off, the system check which is performed using residual power checks for malfunctions that are difficult to detect during normal operation, within a certain amount of time.

Duration

The minimum time for which the skid control ECU must detect a continuous deviation in the monitored value(s) in order to store a DTC. Timing begins after the "typical enabling conditions" are met.

Typical Malfunction Thresholds

Value beyond which the skid control ECU will determine that there is a malfunction and stores a DTC.

MIL Operation

MIL illumination timing after a malfunction is detected.

"Immediate" means that the skid control ECU illuminates the MIL the instant the skid control ECU determines that there is a malfunction.

Component Operating Range

Normal operation range of sensors and solenoids under normal driving conditions.

Use these ranges as a reference.

They cannot be used to judge if a sensor or solenoid is defective or not.

*A

for 2WD

*B

for AWD

*1

FRONT SPEED SENSOR RH

*2

FRONT AXLE HUB SUB-ASSEMBLY RH

- FRONT SPEED SENSOR ROTOR RH

*3

FRONT SPEED SENSOR LH

*4

FRONT AXLE HUB SUB-ASSEMBLY LH

- FRONT SPEED SENSOR ROTOR LH

*5

NO. 1 PARKING BRAKE WIRE ASSEMBLY

- SKID CONTROL SENSOR WIRE RH

*6

REAR AXLE HUB AND BEARING ASSEMBLY RH

- REAR SPEED SENSOR ROTOR RH

- REAR SPEED SENSOR RH

*7

NO. 2 PARKING BRAKE WIRE ASSEMBLY

- SKID CONTROL SENSOR WIRE LH

*8

REAR AXLE HUB AND BEARING ASSEMBLY LH

- REAR SPEED SENSOR ROTOR LH

- REAR SPEED SENSOR LH

*9

REAR SPEED SENSOR RH (REAR SKID CONTROL SENSOR RH)

*10

REAR AXLE HUB AND BEARING ASSEMBLY RH

- REAR SPEED SENSOR ROTOR RH

*11

REAR SPEED SENSOR LH (REAR SKID CONTROL SENSOR LH)

*12

REAR AXLE HUB AND BEARING ASSEMBLY LH

- REAR SPEED SENSOR ROTOR LH

*1

BRAKE ACTUATOR ASSEMBLY

- NO. 2 SKID CONTROL ECU

*2

FRONT DOOR LOCK WITH MOTOR ASSEMBLY (for Driver Side)

*3

INVERTER WITH CONVERTER ASSEMBLY

*4

BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

- NO. 1 SKID CONTROL ECU

- BRAKE ACTUATOR

- BRAKE FLUID LEVEL WARNING SWITCH

*5

NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY

- ABS MAIN FUSE

- ABS MTR NO. 1 FUSE

- ABS NO. 1 FUSE

- ABS NO. 2 FUSE

- ECU-IGP NO. 3 FUSE

- 2ND BATT FUSE

*6

ECM

*1

ELECTRIC PARKING BRAKE SWITCH ASSEMBLY

- VSC OFF SWITCH

- BRAKE HOLD SWITCH

*2

STOP LIGHT SWITCH ASSEMBLY

- STOP LIGHT CONTROL RELAY

*3

POWER STEERING ECU ASSEMBLY

*4

DLC3

*5

BRAKE PEDAL STROKE SENSOR ASSEMBLY

*6

STEERING ANGLE SENSOR

*7

AIRBAG ECU ASSEMBLY

- YAW RATE SENSOR

- ACCELERATION SENSOR

*8

HYBRID Toyota Prius Vehicle CONTROL ECU

*9

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

*10

POWER DISTRIBUTION BOX ASSEMBLY

- ECU-IGR NO. 2 FUSE

- ECU-IGR NO. 3 FUSE

- A/BAG-IGR FUSE

- ECU-DCC NO. 1 FUSE

- STOP FUSE

*11

COMBINATION METER ASSEMBLY

- ABS WARNING LIGHT

- BRAKE SYSTEM WARNING LIGHT (RED INDICATOR)

- BRAKE SYSTEM WARNING LIGHT (YELLOW INDICATOR)

- SLIP INDICATOR LIGHT

- VSC OFF INDICATOR LIGHT

- BRAKE HOLD STANDBY INDICATOR LIGHT

- BRAKE HOLD OPERATED INDICATOR LIGHT

- MULTI-INFORMATION DISPLAY (TRACTION CONTROL TURNED OFF)

- METER BUZZER

*12

TRANSMISSION FLOOR SHIFT ASSEMBLY

- SHIFT CONTROL ECU

*13

INTEGRATION CONTROL SUPPLY

*14

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

1.

VEHICLE BROUGHT TO WORKSHOP

2.

CUSTOMER PROBLEM ANALYSIS

3.

CHECK DTC, FREEZE FRAME DATA AND Toyota Prius Vehicle CONTROL HISTORY (RoB)*

Vehicle Control History (RoB)

Toyota Prius Vehicle Control History (RoB)

Vehicle Control History (RoB)

DTCs are not output. (Problem symptom occurs.)

A

DTCs are output.

B

DTCs are not output. (Problem symptom does not occur.)

C

DTCs are not output. (Toyota Prius Vehicle control history (RoB) is stored.)

D

CONFIRM PROBLEM SYMPTOMS

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS*

USE SIMULATION METHOD TO CHECK

PERFORM TROUBLESHOOTING AND REPAIR REGARDING Toyota Prius Vehicle CONTROL HISTORY (RoB)*

NOTICE:

After performing troubleshooting and repair regarding vehicle control history (RoB), clear the vehicle control history (RoB).

ABS warning light abnormal (Remains on)

Refer to Toyota Prius Vehicle Control History (RoB)

Refer to Meter / Gauge system

Brake system warning light (red indicator) abnormal (Remains on)

Refer to Toyota Prius Vehicle Control History (RoB)

Refer to Meter / Gauge system

Brake system warning light (yellow indicator) abnormal (Remains on)

Refer to Toyota Prius Vehicle Control History (RoB)

Refer to Meter / Gauge system

Brake hold standby indicator light abnormal

Refer to the procedure for "Brake Hold Standby Indicator Light Circuit"

Brake hold operated indicator light abnormal

Refer to Toyota Prius Vehicle Control History (RoB)

Refer to the procedure for "Brake Hold Operated Indicator Light Circuit"

Slip indicator light abnormal

Refer to Toyota Prius Vehicle Control History (RoB)

Refer to Meter / Gauge system

TRAC does not operate

Refer to the procedure for "TRAC does not Operate"

Excessive brake pedal travel (No fluid leaks and no air in system)

Refer to the procedure for "Excessive Brake Pedal Travel (No Fluid Leaks and No Air in System)"

ABS does not operate

Refer to the procedure for "ABS does not Operate"

ABS operates before necessary when braking

Refer to the procedure for "ABS Operates Before Necessary When Braking"

VSC does not operate or VSC does not operate correctly

Refer to the procedure for "VSC does not Operate or VSC does not Operate Correctly"

Abnormal brake pedal response on first depression

Refer to the procedure for "Abnormal Brake Pedal Response on First Depression"

VSC OFF switch abnormal

Refer to the procedure for "VSC OFF Switch Circuit"

Meter buzzer abnormal

Refer to Meter / Gauge system

*a

Front view of wire harness connector

(to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly))

-

-

*2: Refer to Sub Battery System

Click here

A3-1 (BM) - Body ground

No. 1 skid control ECU (brake booster with master cylinder assembly) power supply input

Always

11 to 14 V

A3-2 (CBKP)

No. 1 skid control ECU (brake booster with master cylinder assembly) backup power supply input

*2

*2

A3-3 (CSW2)

No. 2 skid control ECU (brake actuator assembly) operation signal output

-

-

A3-4 (CA2H)

CAN communication line 2 (H)

-

-

A3-5

-

-

-

A3-6

-

-

-

A3-7

-

-

-

A3-8

-

-

-

A3-9

-

-

-

A3-10

-

-

-

A3-11 (BS) - Body ground

Solenoid power supply input

Always

11 to 14 V

A3-12

-

-

-

A3-13 (CA2L)

CAN communication line 2 (L)

-

-

A3-14

-

-

-

A3-15

-

-

-

A3-16

-

-

-

A3-17

-

-

-

A3-18

-

-

-

A3-19

-

-

-

A3-20

-

-

-

A3-21 (GND2) - Body ground

No. 1 skid control ECU (brake booster with master cylinder assembly) ground

1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal

Below 1 Ω

A3-22 (CTY) - Body ground

Front door lock with motor assembly input (for driver side)

Driver door closed → open

11 to 14 V or pulse output (maximum 14 V)*1 → Below 1 V

A3-23 (LBL)

Brake fluid level warning switch input

-

-

A3-24 (CWKP) - Body ground

Integration control supply operation signal output

*2

*2

A3-25

-

-

-

A3-26

-

-

-

A3-27 (SKG1)

Brake pedal stroke sensor 1 ground

-

-

A3-28 (VSK1)

Brake pedal stroke sensor 1 power supply output

-

-

A3-29 (SKS1)

Brake pedal stroke sensor 1 signal input

-

-

A3-30 (IGR) - Body ground

IGR power source input

Ignition switch ON

11 to 14 V

A3-31 (STP) - Body ground

Stop light switch assembly input

Stop light switch assembly on → off (Brake pedal depressed → released)

11 to 14 V → Below 1.5 V

A3-32

-

-

-

A3-33

-

-

-

A3-34 (DC1H)

Daisy chain communication line (H)

-

-

A3-35 (DC1L)

Daisy chain communication line (L)

-

-

A3-36 (CA1H)

CAN communication line 1 (H)

-

-

A3-37 (CA1L)

CAN communication line 1 (L)

-

-

A3-38

-

-

-

A3-39

-

-

-

A3-40

-

-

-

A3-41

-

-

-

A3-42

-

-

-

*a

Front view of wire harness connector

(to No. 2 Skid Control ECU (brake actuator assembly))

-

-

A4-1 (GND1) - Body ground

No. 2 skid control ECU (brake actuator assembly) ground

1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal

Below 1 Ω

A4-2

-

-

-

A4-3

-

-

-

A4-4 (RL-)

Rear speed sensor LH (-) signal input

-

-

A4-5 (RL )

Rear speed sensor LH ( ) power supply output

-

-

A4-6 (FR-)

Front speed sensor RH (-) signal input

-

-

A4-7 (FR )

Front speed sensor RH ( ) power supply output

-

-

A4-8

-

-

-

A4-9 (CSW) - Body ground

VSC OFF switch (electric parking brake switch assembly) input

VSC OFF switch (electric parking brake switch assembly) is pushed → released

Below 1 Ω → 10 kΩ or higher

A4-10 (SKS2)

Brake pedal stroke sensor 2 signal input

-

-

A4-11 (STP) - Body ground

Stop light switch assembly input

Stop light switch assembly on → off (Brake pedal depressed → released)

11 to 14 V → Below 1.5 V

A4-12

-

-

-

A4-13

-

-

-

A4-14 ( BS) - Body ground

ABS solenoid relay power supply input

Always

11 to 14 V

A4-15 (IG2) - Body ground

IG2 power source input

Ignition switch ON

11 to 14 V

A4-16 (CA2H)

CAN communication line 2 (H)

-

-

A4-17 (CA2L)

CAN communication line 2 (L)

-

-

A4-18 (SP1)

Speed sensor signal output

-

-

A4-19 (RR-)

Rear speed sensor RH (-) signal input

-

-

A4-20 (RR )

Rear speed sensor RH ( ) power supply output

-

-

A4-21 (FL-)

Front speed sensor LH (-) signal input

-

-

A4-22 (FL )

Front speed sensor LH ( ) power supply output

-

-

A4-23

-

-

-

A4-24

-

-

-

A4-25 (VSK2)

Brake pedal stroke sensor 2 power supply output

-

-

A4-26 (SKG2)

Brake pedal stroke sensor 2 ground

-

-

A4-27 (CANH)

CAN communication line (H)

-

-

A4-28

-

-

-

A4-29 (CTY) - Body ground

No. 2 Skid control ECU (brake actuator assembly) operation signal input

Ignition switch ON

11 to 14 V

A4-30 (GND2) - Body ground

ABS motor ground

1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal

Below 1 Ω

A4-31

-

-

-

A4-32 (STPO) - Body ground

Stop light control relay (stop light switch assembly) output

Always

11 to 14 V

A4-33

-

-

-

A4-34

-

-

-

A4-35 (BH) - Body ground

Brake hold switch (electric parking brake switch assembly) input

Brake hold switch (electric parking brake switch assembly) is pushed → released

Below 1 Ω → 10 kΩ or higher

A4-36

-

-

-

A4-37 (STP2) - Body ground

Stop light control relay (stop light switch assembly) input

Stop light switch assembly on → off (Brake pedal depressed → released)

11 to 14 V → Below 1.5 V

A4-38

-

-

-

A4-39

-

-

-

A4-40

-

-

-

A4-41

-

-

-

A4-42

-

-

-

A4-43 (CANL)

CAN communication line (L)

-

-

A4-44

-

-

-

A4-45 (IG1) - Body ground

IG1 power source input

Ignition switch ON

11 to 14 V

A4-46 (BM) - Body ground

ABS motor relay power supply input

Always

11 to 14 V

Confirmed DTC*

Store condition

Malfunction detected

Clear condition

No malfunctions in 40 driving cycles

or

DTCs cleared using GTS

Permanent DTC*

Store condition

Malfunction detected

Clear condition

Ignition switch is turned to ON (READY) after normal judgment obtained in 3 consecutive driving cycles

or

After DTCs cleared using GTS, universal trip performed and normal judgment obtained for 1 trip

MIL

ON

Malfunction detected

OFF

Ignition switch is turned to ON (READY) after normal judgment obtained in 3 consecutive driving cycles

or

DTCs cleared using GTS

Electric Parking Brake System

Test Failed

Shows the malfunction judgment results during the current trip.

Confirmed*

Shows the DTCs confirmed up to now. (The number of current trips differs for each DTC.)

Total Distance Traveled - Unit

Total distance traveled unit

km / mile

-

-

Total Distance Traveled

Total distance traveled

Min.: 0

Max.: 16777215

-

-

Solenoid Power Supply Voltage

Solenoid power supply voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Stop Light SW

Stop light switch assembly (STP terminal input)

OFF / ON

OFF: Brake pedal released

ON: Brake pedal depressed

HINT:

The brake pedal state is determined using the voltage at terminal STP

Parking Brake SW

Parking brake status

OFF / ON

OFF: Parking brake released

ON: Parking brake applied

-

Buzzer

Meter buzzer

OFF / ON

OFF: Buzzer off

ON: Buzzer on

-

Dealer Mode

Dealer Mode (Signal Check mode or Calibration mode) status

OFF / ON

OFF: Normal mode

ON: Dealer Mode (Signal Check mode or Calibration mode)

Reservoir Warning SW

Brake fluid level warning switch

OFF / ON

OFF: Reservoir level normal

ON: Reservoir level low

-

ECB Solenoid (SGH)

Switching solenoid valve (SGH)

OFF / ON

OFF: Solenoid off

ON: Solenoid on

ECB: Electronically Controlled Brake System

ECB Solenoid (SSA)

Switching solenoid valve (SSA)

OFF / ON

OFF: Solenoid off

ON: Solenoid on

ECB: Electronically Controlled Brake System

IGP_PT2

IGP_PT2 status

OFF / ON

OFF: IGP_PT2 OFF

ON: IGP_PT2 ON

-

Stop Switch Open

Momentary interruption (open circuit) status in wire harness between No. 1 skid control ECU (brake booster with master cylinder assembly) and stop light switch assembly status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Stroke Open

Brake pedal stroke sensor 1 open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Servo Pressure Sensor Open

Servo pressure sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Gap Hold Chamber Pressure Sensor Open

Gap pressure sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Stroke Sensor

Brake pedal stroke sensor 1

Min.: 0.0 V

Max.: 5.0 V

Brake pedal released: 0.6 to 1.4 V

Reading increases when brake pedal is depressed

Quantity of Brake Pedal Stroke

Brake pedal stroke amount

Min.: 0 mm

Max.: 255 mm

Brake pedal released: 0 mm

Reading increases when brake pedal is depressed

Servo Pressure

Pressure value of servo

Min.: 0.00 MPa

Max.: 24.48 MPa

0.00 to 21.60 MPa

Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal

Brake pedal released: 0.00 to 1.53 MPa

Voltage of Stroke Sensor

Voltage of brake pedal stroke sensor 1

Min.: 0.0 V

Max.: 5.0 V

-

-

Brake Pedal Stroke Change Speed

Brake pedal stroke rate of change

Min.: -2560 mm/s

Max.: 2540 mm/s

Brake pedal released or depressed and held: 0 mm/s

Brake pedal is being moved: Changes in proportion to the operation speed of the brake pedal

Target Oil Pressure

Wheel target hydraulic pressure

Min.: 0.00 MPa

Max.: 20.00 MPa

-

Changes according to the target wheel cylinder hydraulic pressure

VCSK Voltage Value

VCSK voltage value

Min.: 0.000 V

Max.: 5.500 V

4.800 to 5.200 V

-

SGH Solenoid Current

Switching solenoid valve (SGH) current

Min.: 0.000 A

Max.: 3.000 A

0.000 to 1.500 A

-

SSA Solenoid Current

Switching solenoid valve (SSA) current

Min.: 0.000 A

Max.: 3.000 A

0.000 to 1.500 A

-

The Number of Capacitor Operation

Displays the number of integration control supply operations

Min.: 0

Max.: 255

-

-

Gap Hold Chamber Oil Pressure

Pressure value of stroke simulator

Min.: 0.00 MPa

Max.: 24.48 MPa

Brake pedal released: 0.00 to 1.53 MPa

Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal

Gap Hold Chamber Oil Pressure Grade

Amount of change in stroke simulator oil pressure

Min.: -30 MPa/s

Max.: 225 MPa/s

-

-

Linear Solenoid Current (SLM1)

Linear solenoid valve (SLM1) current

Min.: 0.000 A

Max.: 1.500 A

Brake pedal released: 0 A

-

Linear Solenoid Current (SLM2)

Linear solenoid valve (SLM2) current

Min.: 0.000 A

Max.: 1.500 A

Brake pedal released: 0 A

-

IGR Voltage

IGR voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BS Voltage

BS voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BM Voltage

BM voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Zero point Calibrated Value of Phase U Current Monitor

Displays zero point calibrated value of phase U current monitor for brushless motor

Min.: -32.768 A

Max.: 32.767 A

-

-

Zero point Calibrated Value of Phase V Current Monitor

Displays zero point calibrated value of phase V current monitor for brushless motor

Min.: -32.768 A

Max.: 32.767 A

-

-

Zero point Calibrated Value of Phase W Current Monitor

Displays zero point calibrated value of phase W current monitor for brushless motor

Min.: -32.768 A

Max.: 32.767 A

-

-

Thermistor1 Temperature for Inverter Circuit

Temperature of thermistor1 in inverter circuit

Min.: -327.68°C (-558°F)

Max.: 327.67°C (622°F)

-

-

Thermistor2 Temperature for Inverter Circuit

Temperature of thermistor2 in inverter circuit

Min.: -327.68°C (-558°F)

Max.: 327.67°C (622°F)

-

-

Brushless Motor Inverter end Voltage

Inverter end voltage for brushless motor

Min.: 0.00 V

Max.: 655.35 V

-

Changes in proportion to auxiliary battery voltage

Brushless Motor Required Rotation Speed (with Rotation Angle Sensor)

Requested brushless motor rotation speed

Min.: -32768 rpm

Max.: 32767 rpm

Brake pedal released: 0 rpm

-

Brushless Motor Actual Rotation Speed (with Rotation Angle Sensor)

Actual brushless motor rotation speed

Min.: -32768 rpm

Max.: 32767 rpm

Brake pedal released: 0 rpm

-

Brushless Motor Operation Status (with Rotation Angle Sensor)

Operation status of brushless motor

Abnormal / Stop / Synchronization drive / Extended Induced voltage

-

-

Down Stream Voltage Solenoid Relay

Solenoid relay downstream voltage

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

CBKP Voltage

CBKP voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Total Distance Traveled - Unit

Total distance traveled unit

km / mile

-

-

Total Distance Traveled

Total distance traveled

Min.: 0

Max.: 16777215

-

-

FR Wheel Speed

Front wheel speed sensor RH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

FL Wheel Speed

Front wheel speed sensor LH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

RR Wheel Speed

Rear wheel speed sensor RH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

RL Wheel Speed

Rear wheel speed sensor LH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

Master Cylinder Sensor 1

Master cylinder pressure sensor pressure (value detected by ECU)

Min.: -1.00 MPa

Max.: 23.99 MPa

Brake pedal released: -1.00 to 0.00 MPa

Reading increases when brake pedal is depressed

Master Cylinder Sensor Temperature

Master cylinder pressure sensor temperature

Min.: -80°C (-112°F)

Max.: 175°C (347°F)

Current master cylinder pressure sensor temperature

-

M/C Sensor Grade

Master cylinder pressure sensor change (value detected by ECU)

Min.: -30 MPa/s

Max.: 225 MPa/s

Brake pedal released or pedal held at constant position: 0 MPa/s

When brake pedal is being operated: Changes in proportion with the pedal movement speed

Lateral G

Lateral G

Min.: -25.105 m/s2

Max.: 24.908 m/s2

Turning right: -25.105 to 0.000 m/s2

Turning left: 0.000 to 24.908 m/s2

During turning: Changes in proportion with lateral acceleration

Forward and Rearward G

Forward and rearward G

Min.: -25.105 m/s2

Max.: 24.908 m/s2

During deceleration: -25.105 to 0.000 m/s2

During acceleration: 0.000 to 24.908 m/s2

During acceleration/deceleration: Changes in proportion with acceleration

Yaw Rate Sensor Value

Yaw rate sensor value

Min.: -128°/s

Max.: 127°/s

Toyota Prius Vehicle stopped: 0°/s

Turning right: -128 to 0°/s

Turning left: 0 to 127°/s

-

Steering Angle Value

Steering angle sensor value

Min.: -3276.8°

Max.: 3276.7°

Turning left: 0.0 to 3276.7°

Turning right: -3276.8 to 0.0°

-

Zero Point of Steering Angle

Zero point of steering angle

Min.: -3276.8°

Max.: 3276.7°

-

-

MT Voltage Value

ABS motor drive voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

HINT:

This is the voltage downstream of the ABS motor as monitored by the No. 2 skid control ECU (brake actuator assembly)

Solenoid Power Supply Voltage

Solenoid power supply voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

HINT:

This is the voltage output (which supplies power to each solenoid) from the No. 2 skid control ECU (brake actuator assembly) to the ABS solenoid relay

Accelerator Opening Angle %

Percentage of accelerator pedal opening angle

Min.: 0.0%

Max.: 127.5%

Accelerator pedal released: 0.0%

During accelerator pedal operation: Changes in proportion with the pedal movement

Shift Lever Position

Shift position information

fail / 1st / 2nd / 3rd / 4th / 5th / 6th / B / D/M / N / P / R / No input

Actual shift position

-

TRC(TRAC)/VSC OFF Mode

TRAC/VSC off mode

Normal mode (TRC(TRAC) ON/VSC ON) / TRC(TRAC) OFF mode (TRC(TRAC) OFF/VSC ON) / VSC expert mode (VSC expert mode MID ON) / VSC OFF mode (TRC(TRAC) OFF/VSC OFF)

Normal mode (TRC(TRAC) ON/VSC ON): Normal mode

TRC(TRAC) OFF mode (TRC(TRAC) OFF/VSC ON): TRAC off mode

VSC expert mode (VSC expert mode MID ON): VSC expert mode

VSC OFF mode (TRC(TRAC) OFF/VSC OFF): VSC off mode

-

Brake Hold Control Mode

Brake hold control mode

Out of control mode / Pressure hold mode / Pressure release mode / EPB lock mode

Out of control mode: Brake hold control system is off or brake hold control system is stand-by mode (brake hold standby indicator light is illuminated)

Pressure hold mode: Brake hold control is operating (brake hold operated indicator light is illuminated)

Pressure release mode: Brake hold control is released (brake hold operated indicator light not illuminated)

EPB lock mode: Parking brake is engaged during brake hold control

FR Target Oil Pressure

Front wheel RH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

FL Target Oil Pressure

Front wheel LH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

RR Target Oil Pressure

Rear wheel RH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

RL Target Oil Pressure

Rear wheel LH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

Toyota Prius Vehicle Speed

Vehicle speed

(estimated vehicle speed used for various controls)

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

Toyota Prius Vehicle Speed Grade

Vehicle acceleration/deceleration

Min.: -25.105 m/s2

Max.: 24.908 m/s2

Vehicle stopped: 0.000 m/s2

During deceleration: -25.105 to 0.000 m/s2

During acceleration: 0.000 to 24.908 m/s2

During driving: Changes in proportion with Toyota Prius vehicle acceleration/deceleration

Vehicle Stop Time from IG ON

Time vehicle stopped after ignition switch turned to ON

Min.: 0 s

Max.: 1275 s

-

-

Travel Distance from IG ON

Driving time after ignition switch turned to ON

Min.: 0 s

Max.: 1275 s

-

-

Stop Light SW

Stop light switch assembly status

(STP or STP2 terminal input)

OFF / ON

OFF: Brake pedal released

ON: Brake pedal depressed

Parking Brake SW

Parking brake status

OFF / ON

OFF: Parking brake released

ON: Parking brake applied

-

Brake Hold Switch

Brake hold switch (electric parking brake switch assembly) (BH terminal input)

OFF / ON

OFF: Brake hold switch (electric parking brake switch assembly) OFF

ON: Brake hold switch (electric parking brake switch assembly) ON

HINT:

The brake hold switch (electric parking brake switch assembly) state is determined using the voltage at terminal BH

Stop Light Relay

Stop light control relay (stop light switch assembly) status

(STP terminal input)

OFF / ON

OFF: Stop light control relay (stop light switch assembly) off and brake pedal released

ON: Stop light control relay (stop light switch assembly) on or brake pedal depressed

HINT:

The voltage of power supplied to the stop lights is measured at the STP terminal.

Inspection Mode

Inspection mode

OFF / ON

OFF: Normal mode

ON: Inspection mode

-

TRC(TRAC) Control

TRAC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

TRC(TRAC) Engine Control

TRAC throttle control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

TRC(TRAC) Brake Control

TRAC brake control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FR Wheel VSC Ctrl Status

Front wheel RH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FL Wheel VSC Ctrl Status

Front wheel LH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RR Wheel VSC Ctrl Status

Rear wheel RH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RL Wheel VSC Ctrl Status

Rear wheel LH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FR Wheel ABS Ctrl Status

Front wheel RH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FL Wheel ABS Ctrl Status

Front wheel LH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RR Wheel ABS Ctrl Status

Rear wheel RH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RL Wheel ABS Ctrl Status

Rear wheel LH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

BA Ctrl Status

BA control status

OFF / ON

OFF: Not during control

ON: During control

-

PBA Ctrl Status

PBA control status

OFF / ON

OFF: Not during control

ON: During control

-

Stop Light Relay State for ECU Control

Stop light control relay (stop light switch assembly) status (STPO terminal output) (for ECU control)

OFF / ON

OFF: Stop light control relay (stop light switch assembly) off (Stop light off)

ON: Stop light control relay (stop light switch assembly) on (Stop light on)

-

Solenoid State for ECU Control

ABS solenoid relay status (for ECU control)

OFF / ON

OFF: ABS solenoid relay not operating

ON: ABS solenoid relay operating

-

Motor State for ECU Control

ABS motor relay status (for ECU control)

OFF / ON

OFF: ABS motor relay not operating

ON: ABS motor relay operating

-

Buzzer

Meter buzzer

OFF / ON

OFF: Buzzer off

ON: Buzzer on

-

Dealer Mode

Dealer Mode (Signal Check mode or Calibration mode) status

OFF / ON

OFF: Normal mode

ON: Dealer Mode (Signal Check mode or Calibration mode)

Zero Point Memory State of Steering Angle Sensor

Steering angle sensor zero point memorization status

Zero point is not memorized / Zero point is memorized

-

HINT:

The steering angle sensor zero point is acquired when the Toyota Prius vehicle is being driven in a straight line at a speed of 35 km/h (22 mph) or more for approximately 5 seconds.

Regenerative Cooperation

Regenerative cooperation

OFF / ON

OFF: Not operating

ON: Operating

-

TRC(TRAC)/VSC OFF SW

VSC OFF switch (electric parking brake switch assembly) (CSW terminal input)

OFF / ON

OFF: VSC OFF switch (electric parking brake switch assembly) OFF

ON: VSC OFF switch (electric parking brake switch assembly) ON

HINT:

The VSC OFF switch (electric parking brake switch assembly) state is determined using the voltage at terminal CSW

IGP_PT2

IGP_PT2 status

OFF / ON

OFF: IGP_PT2 OFF

ON: IGP_PT2 ON

-

FR Wheel

Front right wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

FL Wheel

Front left wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

RR Wheel

Rear right wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

RL Wheel

Rear left wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

FR Speed Open

Front speed sensor RH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

FL Speed Open

Front speed sensor LH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RR Speed Open

Rear speed sensor RH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RL Speed Open

Rear speed sensor LH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Yaw Rate Open

Yaw rate sensor (airbag ECU assembly) open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Deceleration Open

Acceleration sensor (airbag ECU assembly) open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Steering Open

Steering angle sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Master Cylinder Open

Master cylinder pressure sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

FR Speed Sensor Voltage Open

Front speed sensor RH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

FL Speed Sensor Voltage Open

Front speed sensor LH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RR Speed Sensor Voltage Open

Rear speed sensor RH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RL Speed Sensor Voltage Open

Rear speed sensor LH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

M/C Pressure Sensor Noise

Master cylinder pressure sensor noise detection

Normal / Under intermittent

Normal: Noise is not detected

Under intermittent: Noise is detected

-

Yaw Rate Sensor Voltage Open

Yaw rate sensor (airbag ECU assembly) voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Master Cylinder Pressure Sensor Power Supply Open

Master cylinder pressure sensor power supply voltage status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Solenoid Power Supply Open

Solenoid power supply voltage status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Motor Power Supply Open

Motor power supply voltage status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Stop Switch Open

Momentary interruption (open circuit) status in wire harness between No. 2 skid control ECU (brake actuator assembly) and stop light switch assembly status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

A/C ECU Communication Open

Air conditioning amplifier assembly communication open detection

Normal / Under intermittent

Normal: Momentary interruption not detected

Under intermittent: Momentary interruption detected

-

Air Bag ECU Communication Open

Airbag ECU assembly open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Stroke2 Open

Brake pedal stroke sensor 2 open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

HV Communication Open

Hybrid Toyota Prius vehicle control ECU communication open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Body ECU Communication Open

Main body ECU (multiplex network body ECU) communication open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Brake Hold Ready

Brake hold control permission status

Not in stand-by mode / Stand-by mode

Not in stand-by mode: Brake hold function not operating (brake hold standby indicator light not illuminated)

Stand-by mode: Brake hold function stand-by state (brake hold standby indicator light illuminated)

-

Stroke Sensor2

Brake pedal stroke sensor 2

Min.: 0.0 V

Max.: 5.0 V

Brake pedal released: 3.6 to 4.4 V

Reading decreases when brake pedal is depressed

Quantity of Brake Pedal Stroke

Brake pedal stroke amount

Min.: 0 mm

Max.: 255 mm

Brake pedal released: 0 mm

Reading increases when brake pedal is depressed

Voltage of Stroke Sensor2

Voltage of brake pedal stroke sensor 2

Min.: 0.0 V

Max.: 5.0 V

-

-

FR Regenerative Request

FR regenerative request torque

Min.: 0 Nm

Max.: 1048560 Nm

-

Changes according to brake pedal force (When depressing the brake pedal lightly after reaching 30 km/h (19 mph) or more, avoiding sudden braking.)

FR Regenerative Operation

FR regenerative operation torque

Min.: 0 Nm

Max.: 1048560 Nm

-

Changes according to brake pedal force (When depressing the brake pedal lightly after reaching 30 km/h (19 mph) or more, avoiding sudden braking.)

Brake Pedal Stroke Change Speed

Brake pedal stroke rate of change

Min.: -2560 mm/s

Max.: 2540 mm/s

Brake pedal released or depressed and held: 0 mm/s

Brake pedal is being moved: Changes in proportion to the operation speed of the brake pedal

VCSK Voltage Value

VSK2 voltage value

Min.: 0.000 V

Max.: 5.500 V

4.800 to 5.200 V

-

IGR Voltage

IG1 voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BS Voltage

BS voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BM Voltage

BM voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Voltage Difference between Motor Input-Output Terminal

Voltage difference between motor input-output terminal

Min.: -640.00 V

Max.: 639.98 V

-

-

Yaw Rate Sensor 1 Higher Resolution Signal

Yaw rate sensor 1 higher resolution signal

Min.: -327.68 deg/sec

Max.: 327.67 deg/sec

Turning right: -327.68 to 0.00 deg/sec

Turning left: 327.68 to 0.00 deg/sec

-

Yaw Rate Sensor 2 Higher Resolution Signal

Yaw rate sensor 2 higher resolution signal

Min.: -327.68 deg/sec

Max.: 327.67 deg/sec

Turning right: -327.68 to 0.00 deg/sec

Turning left: 327.68 to 0.00 deg/sec

-

GL1 GX Sensor Higher Resolution Signal

GL1 GX sensor higher resolution signal

Min.: -32768 mG

Max.: 32767 mG

During deceleration: -32768 to 0 mG

During acceleration: 0 to 32767 mG

-

GL2 GY Sensor Higher Resolution Signal

GL2 GY sensor higher resolution signal

Min.: -32768 mG

Max.: 32767 mG

Turning right: -32768 to 0 mG

Turning left: 0 to 32767 mG

-

Brakes Specifications Change by C-BEST

Brakes specifications change by C-BEST

None / Exist

-

-

SLM2 Refresh Drive Completed Status

Linear solenoid (SLM2) refresh complete/incomplete

Not Complete / Complete

Complete: Linear solenoid (SLM2) refresh complete

Not complete: Linear solenoid (SLM2) refresh incomplete

-

Signal Check

Output Signal of Front Speed Sensor RH

Incomplete/complete

Output Signal of Front Speed Sensor LH

Incomplete/complete

Output Signal of Rear Speed Sensor RH

Incomplete/complete

Output Signal of Rear Speed Sensor LH

Incomplete/complete

Change in Output Signal of Front Speed Sensor RH

Incomplete/complete

Check the stability of the sensor input waveform

Change in Output Signal of Front Speed Sensor LH

Incomplete/complete

Check the stability of the sensor input waveform

Change in Output Signal of Rear Speed Sensor RH

Incomplete/complete

Check the stability of the sensor input waveform

Change in Output Signal of Rear Speed Sensor LH

Incomplete/complete

Check the stability of the sensor input waveform

Output in Master Cylinder Pressure Sensor

Incomplete/complete

Evaluate the master cylinder pressure sensor zero point voltage

Learning of Stroke Sensor Zero Point

Incomplete/complete

Check the stroke sensor zero point output value

*2: The systems for which control is prohibited differ depending on the status of the malfunction.

Malfunction in the ABS.

ABS, BA, TRAC and VSC control prohibited.

Brake hold control prohibited.*1

Malfunction in the BA system.

ABS, BA, TRAC and VSC control prohibited.

Brake hold control prohibited.*1

Malfunction in the EBD system.

ABS, EBD, BA, TRAC and VSC control prohibited.

Brake hold control prohibited.*1

Malfunction in the TRAC system.

ABS, BA, TRAC and VSC control prohibited.*2

Brake hold control prohibited.*1

Malfunction in the VSC system.

ABS, BA, TRAC and VSC control prohibited.*2

Brake hold control prohibited.*1

A function controlled by No. 1 skid control ECU (brake booster with master cylinder assembly) stops working.

No. 2 skid control ECU (brake actuator assembly) generates braking force.

A function controlled by No. 2 skid control ECU (brake actuator assembly) stops working.

No. 1 skid control ECU (brake booster with master cylinder assembly) generates braking force.

A brake fluid pressure control component inside the brake booster with master cylinder assembly or brake actuator assembly stops working.

Braking force solely generated by the driver.

The brake fluid pressure supply to the brake booster with master cylinder assembly and brake actuator assembly stops.

Braking force solely generated by the driver.

Total Distance Traveled - Unit

Total distance traveled unit

km / mile

-

-

Total Distance Traveled

Total distance traveled

Min.: 0

Max.: 16777215

-

-

Solenoid Power Supply Voltage

Solenoid power supply voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Stop Light SW

Stop light switch assembly (STP terminal input)

OFF / ON

OFF: Brake pedal released

ON: Brake pedal depressed

HINT:

The brake pedal state is determined using the voltage at terminal STP

Parking Brake SW

Parking brake status

OFF / ON

OFF: Parking brake released

ON: Parking brake applied

-

Buzzer

Meter buzzer

OFF / ON

OFF: Buzzer off

ON: Buzzer on

-

Dealer Mode

Dealer Mode (Signal Check mode or Calibration mode) status

OFF / ON

OFF: Normal mode

ON: Dealer Mode (Signal Check mode or Calibration mode)

Reservoir Warning SW

Brake fluid level warning switch

OFF / ON

OFF: Reservoir level normal

ON: Reservoir level low

-

ECB Solenoid (SGH)

Switching solenoid valve (SGH)

OFF / ON

OFF: Solenoid off

ON: Solenoid on

ECB: Electronically Controlled Brake System

ECB Solenoid (SSA)

Switching solenoid valve (SSA)

OFF / ON

OFF: Solenoid off

ON: Solenoid on

ECB: Electronically Controlled Brake System

IGP_PT2

IGP_PT2 status

OFF / ON

OFF: IGP_PT2 OFF

ON: IGP_PT2 ON

-

Stroke Sensor

Brake pedal stroke sensor 1

Min.: 0.0 V

Max.: 5.0 V

Brake pedal released: 0.6 to 1.4 V

Reading increases when brake pedal is depressed

Quantity of Brake Pedal Stroke

Brake pedal stroke amount

Min.: 0 mm

Max.: 255 mm

Brake pedal released: 0 mm

Reading increases when brake pedal is depressed

Servo Pressure

Pressure value of servo

Min.: 0.00 MPa

Max.: 24.48 MPa

Brake pedal released: 0.00 to 1.53 MPa

Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal

Voltage of Stroke Sensor

Voltage of brake pedal stroke sensor 1

Min.: 0.0 V

Max.: 5.0 V

-

-

Brake Pedal Stroke Change Speed

Brake pedal stroke rate of change

Min.: -2560 mm/s

Max.: 2540 mm/s

Brake pedal released or depressed and held: 0 mm/s

Brake pedal is being moved: Changes in proportion to the operation speed of the brake pedal

Target Oil Pressure

Wheel target hydraulic pressure

Min.: 0.00 MPa

Max.: 20.00 MPa

-

Changes according to the target wheel cylinder hydraulic pressure

VCSK Voltage Value

VCSK voltage value

Min.: 0.000 V

Max.: 5.500 V

4.800 to 5.200 V

-

SGH Solenoid Current

Switching solenoid valve (SGH) current

Min.: 0.000 A

Max.: 3.000 A

0.000 to 1.500 A

-

SSA Solenoid Current

Switching solenoid valve (SSA) current

Min.: 0.000 A

Max.: 3.000 A

0.000 to 1.500 A

-

ECB Main Relay

Main relay operation request

OFF / ON

OFF: Relay off

ON: Relay on

ECB: Electronically Controlled Brake System

Brake Booster Motor

Brake booster motor status

OFF / ON

OFF: Motor off

ON: Motor on

-

Linear Solenoid (SLM1)

Linear solenoid valve (SLM1) current

Min.: 0.000 A

Max.: 0.504 A

-

-

Linear Solenoid (SLM2)

Linear solenoid valve (SLM2) current

Min.: 0.000 A

Max.: 0.504 A

-

-

The Number of Capacitor Operation

Displays the number of integration control supply operations

Min.: 0

Max.: 255

-

-

Gap Hold Chamber Oil Pressure

Pressure value of stroke simulator

Min.: 0.00 MPa

Max.: 24.48 MPa

Brake pedal released: 0.00 to 1.53 MPa

Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal

Gap Hold Chamber Oil Pressure Grade

Amount of change in stroke simulator oil pressure

Min.: -30 MPa/s

Max.: 225 MPa/s

-

-

Linear Solenoid Current (SLM1)

Linear solenoid valve (SLM1) current

Min.: 0.000 A

Max.: 1.500 A

Brake pedal released: 0 A

-

Linear Solenoid Current (SLM2)

Linear solenoid valve (SLM2) current

Min.: 0.000 A

Max.: 1.500 A

Brake pedal released: 0 A

-

IGR Voltage

IGR voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BS Voltage

BS voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BM Voltage

BM voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Zero point Calibrated Value of Phase U Current Monitor

Displays zero point calibrated value of phase U current monitor for brushless motor

Min.: -32.768 A

Max.: 32.767 A

-

-

Zero point Calibrated Value of Phase V Current Monitor

Displays zero point calibrated value of phase V current monitor for brushless motor

Min.: -32.768 A

Max.: 32.767 A

-

-

Zero point Calibrated Value of Phase W Current Monitor

Displays zero point calibrated value of phase W current monitor for brushless motor

Min.: -32.768 A

Max.: 32.767 A

-

-

Thermistor1 Temperature for Inverter Circuit

Temperature of thermistor1 in inverter circuit

Min.: -327.68°C (-558°F)

Max.: 327.67°C (622°F)

-

-

Thermistor2 Temperature for Inverter Circuit

Temperature of thermistor2 in inverter circuit

Min.: -327.68°C (-558°F)

Max.: 327.67°C (-622°F)

-

-

Brushless Motor Inverter end Voltage

Inverter end voltage for brushless motor

Min.: 0.00 V

Max.: 655.35 V

-

Changes in proportion to auxiliary battery voltage

Brushless Motor Required Rotation Speed (with Rotation Angle Sensor)

Requested brushless motor rotation speed

Min.: -32768 rpm

Max.: 32767 rpm

Brake pedal released: 0 rpm

-

Brushless Motor Actual Rotation Speed (with Rotation Angle Sensor)

Actual brushless motor rotation speed

Min.: -32768 rpm

Max.: 32767 rpm

Brake pedal released: 0 rpm

-

Brushless Motor Operation Status (with Rotation Angle Sensor)

Operation status of brushless motor

Abnormal / Stop / Synchronization drive / Extended Induced voltage

-

-

Gap Hold Chamber Pressure Sensor Open History

History of momentary open in gap pressure sensor

None / Exist

-

-

Down Stream Voltage Solenoid Relay

Solenoid relay downstream voltage

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

CBKP Voltage

CBKP voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Total Distance Traveled - Unit

Total distance traveled unit

km / mile

-

-

Total Distance Traveled

Total distance traveled

Min.: 0

Max.: 16777215

-

-

FR Wheel Speed

Front wheel speed sensor RH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

FL Wheel Speed

Front wheel speed sensor LH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

RR Wheel Speed

Rear wheel speed sensor RH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

RL Wheel Speed

Rear wheel speed sensor LH reading

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Toyota Prius Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

FR Wheel Acceleration

Front wheel RH acceleration

Min.: -200.840 m/s2

Max.: 199.271 m/s2

Toyota Prius Vehicle stopped: 0.000 m/s2

During deceleration: -200.840 to 0.000 m/s2

During acceleration: 0.000 to 199.271 m/s2

During deceleration/acceleration: Changes continuously

FL Wheel Acceleration

Front wheel LH acceleration

Min.: -200.840 m/s2

Max.: 199.271 m/s2

Toyota Prius Vehicle stopped: 0.000 m/s2

During deceleration: -200.840 to 0.000 m/s2

During acceleration: 0.000 to 199.271 m/s2

During deceleration/acceleration: Changes continuously

RR Wheel Acceleration

Rear wheel RH acceleration

Min.: -200.840 m/s2

Max.: 199.271 m/s2

Toyota Prius Vehicle stopped: 0.000 m/s2

During deceleration: -200.840 to 0.000 m/s2

During acceleration: 0.000 to 199.271 m/s2

During deceleration/acceleration: Changes continuously

RL Wheel Acceleration

Rear wheel LH acceleration

Min.: -200.840 m/s2

Max.: 199.271 m/s2

Toyota Prius Vehicle stopped: 0.000 m/s2

During deceleration: -200.840 to 0.000 m/s2

During acceleration: 0.000 to 199.271 m/s2

During deceleration/acceleration: Changes continuously

Master Cylinder Sensor 1

Master cylinder pressure sensor pressure (value detected by ECU)

Min.: -1.00 MPa

Max.: 23.99 MPa

Brake pedal released: -1.00 to 0.00 MPa

Reading increases when brake pedal is depressed

Zero Point of M/C

Memorized zero point value of master cylinder pressure sensor

Min.: -12.5 MPa

Max.: 12.4 MPa

-

-

Master Cylinder Sensor Temperature

Master cylinder pressure sensor temperature

Min.: -80°C (-112°F)

Max.: 175°C (347°F)

Current master cylinder pressure sensor temperature

-

M/C Sensor Grade

Master cylinder pressure sensor change (value detected by ECU)

Min.: -30 MPa/s

Max.: 225 MPa/s

Brake pedal released or pedal held at constant position: 0 MPa/s

When brake pedal is being operated: Changes in proportion with the pedal movement speed

Lateral G

Lateral G

Min.: -25.105 m/s2

Max.: 24.908 m/s2

Turning right: -25.105 to 0.000 m/s2

Turning left: 0.000 to 24.908 m/s2

During turning: Changes in proportion with lateral acceleration

Forward and Rearward G

Forward and rearward G

Min.: -25.105 m/s2

Max.: 24.908 m/s2

During deceleration: -25.105 to 0.000 m/s2

During acceleration: 0.000 to 24.908 m/s2

During acceleration/deceleration: Changes in proportion with acceleration

Zero Point of Decele2

Memorized zero point value of lateral G

Min.: -25.105 m/s2

Max.: 24.908 m/s2

-

-

Zero Point of Decele

Memorized zero point value of forward and rearward G

Min.: -25.105 m/s2

Max.: 24.908 m/s2

-

-

Yaw Rate Sensor Value

Yaw rate sensor value

Min.: -128°/s

Max.: 127°/s

Toyota Prius Vehicle stopped: 0°/s

Turning right: -128 to 0°/s

Turning left: 0 to 127°/s

-

Zero Point of Yaw Rate Sensor

Memorized zero point value of yaw rate sensor

Min.: -128°/s

Max.: 127°/s

After completing zero point calibration: °/s

-

Steering Angle Value

Steering angle sensor value

Min.: -3276.8°

Max.: 3276.7°

Turning left: 0.0 to 3276.7°

Turning right: -3276.8 to 0.0°

-

Zero Point of Steering Angle

Memorized zero point value of steering angle sensor

Min.: -3276.8°

Max.: 3276.7°

-

-

MT Voltage Value

ABS motor drive voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

HINT:

This is the voltage downstream of the ABS motor as monitored by the No. 2 skid control ECU (brake actuator assembly)

Solenoid Power Supply Voltage

Solenoid power supply voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

HINT:

This is the voltage output (which supplies power to each solenoid) from the No. 2 skid control ECU (brake actuator assembly) to the ABS solenoid relay

Toyota Prius Vehicle Speed

Vehicle speed

(Vehicle speed signal output to combination meter assembly)

Min.: 0.0 km/h (0 mph)

Max.: 6553.5 km/h (4072 mph)

Vehicle stopped: 0.0 km/h (0 mph)

When driving at constant speed: No large fluctuations

Accelerator Opening Angle %

Percentage of accelerator pedal opening angle

Min.: 0.0%

Max.: 127.5%

Accelerator pedal released: 0.0%

During accelerator pedal operation: Changes in proportion with the pedal movement

Shift Lever Position

Shift position information

fail / 1st / 2nd / 3rd / 4th / 5th / 6th / B / D/M / N / P / R / No input

Actual shift position

-

TRC(TRAC)/VSC OFF Mode

TRAC/VSC off mode

Normal mode (TRC(TRAC) ON/VSC ON) / TRC(TRAC) OFF mode (TRC(TRAC) OFF/VSC ON) / VSC expert mode (VSC expert mode MID ON) / VSC OFF mode (TRC(TRAC) OFF/VSC OFF)

Normal mode (TRC(TRAC) ON/VSC ON): Normal mode

TRC(TRAC) OFF mode (TRC(TRAC) OFF/VSC ON): TRAC off mode

VSC expert mode (VSC expert mode MID ON): VSC expert mode

VSC OFF mode (TRC(TRAC) OFF/VSC OFF): VSC off mode

-

Brake Hold Control Mode

Brake hold control mode

Out of control mode / Pressure hold mode / Pressure release mode / EPB lock mode

Out of control mode: Brake hold control system is off or brake hold control system is stand-by mode (brake hold standby indicator light is illuminated)

Pressure hold mode: Brake hold control is operating (brake hold operated indicator light is illuminated)

Pressure release mode: Brake hold control is released (brake hold operated indicator light not illuminated)

EPB lock mode: Parking brake is engaged during brake hold control

FR Target Oil Pressure

Front wheel RH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

FL Target Oil Pressure

Front wheel LH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

RR Target Oil Pressure

Rear wheel RH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

RL Target Oil Pressure

Rear wheel LH target oil pressure

Min.: 0.0 MPa

Max.: 20.0 MPa

-

Different according to target oil pressure of each wheel

Toyota Prius Vehicle Speed Grade

Vehicle acceleration/deceleration

Min.: -25.105 m/s2

Max.: 24.908 m/s2

Vehicle stopped: 0.000 m/s2

During deceleration: -25.105 to 0.000 m/s2

During acceleration: 0.000 to 24.908 m/s2

During driving: Changes in proportion with Toyota Prius vehicle acceleration/deceleration

Vehicle Stop Time from IG ON

Time vehicle stopped after ignition switch turned to ON

Min.: 0 s

Max.: 1275 s

-

-

Travel Distance from IG ON

Driving time after ignition switch turned to ON

Min.: 0 s

Max.: 1275 s

-

-

Stop Light SW

Stop light switch assembly status

(STP or STP2 terminal input)

OFF / ON

OFF: Brake pedal released

ON: Brake pedal depressed

Parking Brake SW

Parking brake status

OFF / ON

OFF: Parking brake released

ON: Parking brake applied

-

Brake Hold Switch

Brake hold switch (electric parking brake switch assembly) (BH terminal input)

OFF / ON

OFF: Brake hold switch (electric parking brake switch assembly) OFF

ON: Brake hold switch (electric parking brake switch assembly) ON

HINT:

The brake hold switch (electric parking brake switch assembly) state is determined using the voltage at terminal BH

Stop Light Relay

Stop light control relay (stop light switch assembly) status

(STP terminal input)

OFF / ON

OFF: Stop light control relay (stop light switch assembly) off and brake pedal released

ON: Stop light control relay (stop light switch assembly) on or brake pedal depressed

HINT:

The voltage of power supplied to the stop lights is measured at the STP terminal.

Inspection Mode

Inspection mode

OFF / ON

OFF: Normal mode

ON: Inspection mode

-

TRC(TRAC) Control

TRAC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

TRC(TRAC) Engine Control

TRAC throttle control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

TRC(TRAC) Brake Control

TRAC brake control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FR Wheel VSC Ctrl Status

Front wheel RH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FL Wheel VSC Ctrl Status

Front wheel LH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RR Wheel VSC Ctrl Status

Rear wheel RH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RL Wheel VSC Ctrl Status

Rear wheel LH VSC control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FR Wheel ABS Ctrl Status

Front wheel RH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

FL Wheel ABS Ctrl Status

Front wheel LH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RR Wheel ABS Ctrl Status

Rear wheel RH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

RL Wheel ABS Ctrl Status

Rear wheel LH ABS control status

Out of controlling / Under Controlling

Out of controlling: Not during control

Under Controlling: During control

-

BA Ctrl Status

BA control status

OFF / ON

OFF: Not during control

ON: During control

-

PBA Ctrl Status

PBA control status

OFF / ON

OFF: Not during control

ON: During control

-

Stop Light Relay State for ECU Control

Stop light control relay (stop light switch assembly) status (STPO terminal output) (for ECU control)

OFF / ON

OFF: Stop light control relay (stop light switch assembly) off (Stop light off)

ON: Stop light control relay (stop light switch assembly) on (Stop light on)

-

Solenoid State for ECU Control

ABS solenoid relay status (for ECU control)

OFF / ON

OFF: ABS solenoid relay not operating

ON: ABS solenoid relay operating

-

Motor State for ECU Control

ABS motor relay status (for ECU control)

OFF / ON

OFF: ABS motor relay not operating

ON: ABS motor relay operating

-

Buzzer

Meter buzzer

OFF / ON

OFF: Buzzer off

ON: Buzzer on

-

Dealer Mode

Dealer Mode (Signal Check mode or Calibration mode) status

OFF / ON

OFF: Normal mode

ON: Dealer Mode (Signal Check mode or Calibration mode)

Zero Point Memory State of Steering Angle Sensor

Steering angle sensor zero point memorization status

Zero point is not memorized / Zero point is memorized

-

HINT:

The steering angle sensor zero point is acquired when the Toyota Prius vehicle is being driven in a straight line at a speed of 35 km/h (22 mph) or more for approximately 5 seconds

Regenerative Cooperation

Regenerative cooperation

OFF / ON

OFF: Not operating

ON: Operating

-

TRC(TRAC)/VSC OFF SW

VSC OFF switch (electric parking brake switch assembly) (CSW terminal input)

OFF / ON

OFF: VSC OFF switch (electric parking brake switch assembly) OFF

ON: VSC OFF switch (electric parking brake switch assembly) ON

HINT:

The VSC OFF switch (electric parking brake switch assembly) state is determined using the voltage at terminal CSW

IGP_PT2

IGP_PT2 status

OFF / ON

OFF: IGP_PT2 OFF

ON: IGP_PT2 ON

-

FR Wheel

Front right wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

FL Wheel

Front left wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

RR Wheel

Rear right wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

RL Wheel

Rear left wheel rotation direction

Forward / Back

When driving forward: forward

When reversing: Back

-

Brake Hold Ready

Brake hold control permission status

Not in stand-by mode / Stand-by mode

Not in stand-by mode: Brake hold function not operating (brake hold standby indicator light not illuminated)

Stand-by mode: Brake hold function stand-by state (brake hold standby indicator light illuminated)

-

Stroke Sensor2

Brake pedal stroke sensor 2

Min.: 0.0 V

Max.: 5.0 V

Brake pedal released: 3.6 to 4.4 V

Reading decreases when brake pedal is depressed

Quantity of Brake Pedal Stroke

Brake pedal stroke amount

Min.: 0 mm

Max.: 255 mm

Brake pedal released: 0 mm

Reading increases when brake pedal is depressed

Voltage of Stroke Sensor2

Voltage of brake pedal stroke sensor 2

Min.: 0.0 V

Max.: 5.0 V

-

-

FR Regenerative Request

FR regenerative request torque

Min.: 0 Nm

Max.: 1048560 Nm

-

Changes according to brake pedal force (When depressing the brake pedal lightly after reaching 30 km/h (19 mph) or more, avoiding sudden braking.)

FR Regenerative Operation

FR regenerative operation torque

Min.: 0 Nm

Max.: 1048560 Nm

-

Changes according to brake pedal force (When depressing the brake pedal lightly after reaching 30 km/h (19 mph) or more, avoiding sudden braking.)

Brake Pedal Stroke Change Speed

Brake pedal stroke rate of change

Min.: -2560 mm/s

Max.: 2540 mm/s

Brake pedal released or depressed and held: 0 mm/s

Brake pedal is being moved: Changes in proportion to the operation speed of the brake pedal

VCSK Voltage Value

VSK2 voltage value

Min.: 0.000 V

Max.: 5.500 V

4.800 to 5.200 V

-

ABS Solenoid (SRLR)

Rear pressure reduction solenoid LH status

OFF / ON

OFF: Not operating

ON: Operating (pressure reduction)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

ABS Solenoid (SRLH)

Rear pressure holding solenoid LH status

OFF / ON

OFF: Not operating

ON: Operating (pressure holding)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

ABS Solenoid (SRRR)

Rear pressure reduction solenoid RH status

OFF / ON

OFF: Not operating

ON: Operating (pressure reduction)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

ABS Solenoid (SRRH)

Rear pressure holding solenoid RH status

OFF / ON

OFF: Not operating

ON: Operating (pressure holding)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

ABS Solenoid (SFLR)

Front pressure reduction solenoid LH status

OFF / ON

OFF: Not operating

ON: Operating (pressure reduction)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

ABS Solenoid (SFLH)

Front pressure holding solenoid LH status

OFF / ON

OFF: Not operating

ON: Operating (pressure holding)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

ABS Solenoid (SFRR)

Front pressure reduction solenoid RH status

OFF / ON

OFF: Not operating

ON: Operating (pressure reduction)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

ABS Solenoid (SFRH)

Front pressure holding solenoid RH status

OFF / ON

OFF: Not operating

ON: Operating (pressure holding)

HINT:

The solenoid valve controls the brake fluid pressure of the wheel cylinder of the Toyota Prius vehicle

TRC(TRAC)/VSC Solenoid (SM2)

Master cylinder cut solenoid (Brake Pressure Control Solenoid "B") status

OFF / ON

OFF: Not operating

ON: Operating (pressure regulation)

HINT:

Depending on the operating conditions, the master cylinder cut solenoid valves regulate the brake fluid pressure generated by the pump motor

TRC(TRAC)/VSC Solenoid (SM1)

Master cylinder cut solenoid (Brake Pressure Control Solenoid "A") status

OFF / ON

OFF: Not operating

ON: Operating (pressure regulation)

HINT:

Depending on the operating conditions, the master cylinder cut solenoid valves regulate the brake fluid pressure generated by the pump motor

ABS Motor Relay

Motor relay

OFF / ON

OFF: Motor relay off

ON: Motor relay on

-

Solenoid Relay

Solenoid relay

OFF / ON

OFF: Solenoid relay off

ON: Solenoid relay on

-

STPO

Stop light control relay (stop light switch assembly) status

(STPO terminal output)

OFF / ON

OFF: Stop light control relay (stop light switch assembly) off (Stop light off)

ON: Stop light control relay (stop light switch assembly) on (Stop light on)

HINT:

When STPO is ON, the stop light control relay (stop light switch assembly) turns ON and the stop lights illuminate

IGR Voltage

IG1 voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BS Voltage

BS voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

BM Voltage

BM voltage value

Min.: 0.0 V

Max.: 25.5 V

-

Changes in proportion to auxiliary battery voltage

Voltage Difference between Motor Input-Output Terminal

Voltage difference between motor input-output terminal

Min.: -640.00 V

Max.: 639.98 V

-

-

Yaw Rate Sensor 1 Higher Resolution Signal

Yaw rate sensor 1 higher resolution signal

Min.: -327.68 deg/sec

Max.: 327.67 deg/sec

Turning right: -327.68 to 0.00 deg/sec

Turning left: 327.68 to 0.00 deg/sec

-

Yaw Rate Sensor 2 Higher Resolution Signal

Yaw rate sensor 2 higher resolution signal

Min.: -327.68 deg/sec

Max.: 327.67 deg/sec

Turning right: -327.68 to 0.00 deg/sec

Turning left: 327.68 to 0.00 deg/sec

-

GL1 GX Sensor Higher Resolution Signal

GL1 GX sensor higher resolution signal

Min.: -32768 mG

Max.: 32767 mG

During deceleration: -32768 to 0 mG

During acceleration: 0 to 32767 mG

-

GL2 GY Sensor Higher Resolution Signal

GL2 GY sensor higher resolution signal

Min.: -32768 mG

Max.: 32767 mG

Turning right: -32768 to 0 mG

Turning left: 0 to 32767 mG

-

Request Acceleration of Upper Limit from Toyota Safety Sense

Request acceleration of upper limit from Toyota safety sense

Min.: -32.768 m/s2

Max.: 32.767 m/s2

During deceleration: -32.768 to 0 m/s2

During acceleration: 0 to 32.767 m/s2

-

Request Acceleration of Lower Limit from Toyota Safety Sense

Request acceleration of lower limit from Toyota safety sense

Min.: -32.768 m/s2

Max.: 32.767 m/s2

During deceleration: -32.768 to 0 m/s2

During acceleration: 0 to 32.767 m/s2

-

Request Acceleration and Deceleration ID of Upper Limit from Toyota Safety Sense

Request acceleration and deceleration ID of upper limit from Toyota safety sense

Min.: 0

Max.: 63

Not during control: 0

-

Request Acceleration and Deceleration ID of Lower Limit from Toyota Safety Sense

Request acceleration and deceleration ID of lower limit from Toyota safety sense

Min.: 0

Max.: 63

Not during control: 0

-

Target Acceleration of Upper Limit from Toyota Prius Vehicle Motion Control

Target acceleration of upper limit from vehicle motion control

Min.: -1310.72 m/s2

Max.: 1310.68 m/s2

During deceleration: -1310.72 to 0.00 m/s2

During acceleration: 0.00 to 1310.68 m/s2

-

Target Acceleration of Lower Limit from Toyota Prius Vehicle Motion Control

Target acceleration of lower limit from vehicle motion control

Min.: -1310.72 m/s2

Max.: 1310.68 m/s2

During deceleration: -1310.72 to 0.00 m/s2

During acceleration: 0.00 to 1310.68 m/s2

-

Target Acceleration and Deceleration ID of Upper Limit from Toyota Prius Vehicle Motion Control

Target acceleration and deceleration ID of upper limit from vehicle motion control

Min.: 0

Max.: 63

Not during control: 0

-

Target Acceleration and Deceleration ID of Lower Limit from Toyota Prius Vehicle Motion Control

Target acceleration and deceleration ID of lower limit from vehicle motion control

Min.: 0

Max.: 63

Not during control: 0

-

Target Driving Force of Upper Limit from Toyota Prius Vehicle Motion Control

Target driving force of upper limit from vehicle motion control

Min.: -65536 N

Max.: 65534 N

-

Target Driving Force of Lower Limit from Toyota Prius Vehicle Motion Control

Target driving force of lower limit from vehicle motion control

Min.: -65536 N

Max.: 65534 N

-

Brakes Specifications Change by C-BEST

Brakes specifications change by C-BEST

None / Exist

-

-

SLM2 Refresh Drive Completed Status

Linear solenoid (SLM2) refresh complete/incomplete

Not Complete / Complete

Complete: Linear solenoid (SLM2) refresh complete

Not complete: Linear solenoid (SLM2) refresh incomplete

-

Zero Point of G Sensor Learning Status

G sensor zero point learning complete/incomplete

Complete / Not Complete

Complete: G sensor zero point learning complete

Not complete: G sensor zero point learning incomplete

-

Zero Point of Yaw Rate Sensor Learning Status

Yaw rate sensor zero point learning complete/incomplete

Complete / Not Complete

Complete: Yaw rate sensor zero point learning complete

Not complete: Yaw rate sensor zero point learning incomplete

-

Linear Solenoid Valve Offset Learning Status

Linear solenoid valve offset learning complete/incomplete

Complete / Not Complete

Complete: Linear solenoid valve offset learning complete

Not complete: Linear solenoid valve offset learning incomplete

-

Zero Point of Stroke Sensor Learning Status

Stroke sensor zero point learning complete/incomplete

Complete / Not Complete

Complete: Stroke sensor zero point learning complete

Not complete: Stroke sensor zero point learning incomplete

-

System Variant Learning Status

System variant learning complete/incomplete

Complete / Not Complete

Complete: System variant learning complete

Not complete: System variant learning incomplete

-

Drive Mode Select Customize Item EPS Available

Drive mode select customize item EPS available

Not Applicable / Applicable

-

-

Drive Mode Select Customize Item Adaptive Variable Suspension System Available

Drive mode select customize item adaptive variable suspension system available

Not Applicable / Applicable

-

-

Drive Mode Select Customize Item Brake Available

Drive mode select customize item brake available

Not Applicable / Applicable

-

-

Total Distance Traveled

Total distance traveled

Min.: 0

Max.: 16777215

-

-

Total Distance Traveled - Unit

Total distance traveled unit

km / mile

-

-

Steering Angle Signal Information

Steering angle value

(Rotation to the left side is positive)

Min.: -3072.0 deg

Max.: 3070.5 deg

Turning left: 0.0 to 3070.5 deg

Turning right: -3072.0 to 0.0 deg

During steering operation: Changes in proportion with steering wheel rotation

Sensor Malfunction Factor (Current)

Sensor malfunction factor (current)

Normal / Angle Velocity / AD / Sensor Element / Steering Angle Value / Steering Angle Value of RAM Stuck

-

-

Sensor Malfunction Factor (Past)

Sensor malfunction factor (past)

Normal / Angle Velocity / AD / Sensor Element / Steering Angle Value / Steering Angle Value of RAM Stuck

-

-

Total Distance Traveled (When Sensor Malfunction occurred)

Total distance traveled (when sensor malfunction occurred)

Min.: 0

Max.: 16777215

-

-

Total Distance Traveled - Unit (When Sensor Malfunction occurred)

Total distance traveled unit (when sensor malfunction occurred)

km / mile

-

-

Stop Switch Open

Momentary interruption (open circuit) status in wire harness between No. 1 skid control ECU (brake booster with master cylinder assembly) and stop light switch assembly status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Stroke Open

Brake pedal stroke sensor 1 open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Servo Pressure Sensor Open

Servo pressure sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Gap Hold Chamber Pressure Sensor Open

Gap pressure sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

FR Speed Open

Front speed sensor RH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

FL Speed Open

Front speed sensor LH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RR Speed Open

Rear speed sensor RH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RL Speed Open

Rear speed sensor LH open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Yaw Rate Open

Yaw rate sensor (airbag ECU assembly) open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Deceleration Open

Acceleration sensor (airbag ECU assembly) open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Steering Open

Steering angle sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Master Cylinder Open

Master cylinder pressure sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

FR Speed Sensor Voltage Open

Front speed sensor RH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

FL Speed Sensor Voltage Open

Front speed sensor LH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RR Speed Sensor Voltage Open

Rear speed sensor RH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RL Speed Sensor Voltage Open

Rear speed sensor LH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

M/C Pressure Sensor Noise

Master cylinder pressure sensor noise detection

Normal / Under intermittent

Normal: Noise is not detected

Under intermittent: Noise is detected

-

Yaw Rate Sensor Voltage Open

Yaw rate sensor (airbag ECU assembly) voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Master Cylinder Pressure Sensor Power Supply Open

Master cylinder pressure sensor power supply voltage status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Solenoid Power Supply Open

Solenoid power supply voltage status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Motor Power Supply Open

Motor power supply voltage status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Stop Switch Open

Momentary interruption (open circuit) status in wire harness between No. 2 skid control ECU (brake actuator assembly) and stop light switch assembly status

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

A/C ECU Communication Open

Air conditioning amplifier assembly communication open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Air Bag ECU Communication Open

Airbag ECU assembly communication open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Stroke2 Open

Brake pedal stroke sensor 2 open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

HV Communication Open

Hybrid Toyota Prius vehicle control ECU communication open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Body ECU Communication Open

Main body ECU (multiplex network body ECU) communication open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

ECB Solenoid

Switching solenoid (SSA, SGH)

Solenoid Start (Activate)

Solenoid SSA / SGH

Toyota Prius Vehicle condition:

HINT:

To protect actuator and Solenoid(s), this test will continue for 25 seconds.

ECB Main Relay

Main relay

OFF / ON

Toyota Prius Vehicle condition: Vehicle stopped

HINT:

To protect this Actuator and Solenoid, this test will only last 5 seconds.

ECB: Electronically Controlled Brake System

Brake Booster Motor

Brake booster motor

OFF / ON

Toyota Prius Vehicle condition:

HINT:

To protect this Drive Circuit and Solenoid, this test will only last 10 seconds.

-

Linear Solenoid (SLM1)

Linear solenoid (SLM1)

Solenoid Start (Activate)

Solenoid SLM1

Toyota Prius Vehicle condition:

HINT:

To protect this Drive Circuit and Solenoid, this test will only last 2 seconds.

-

Linear Solenoid (SLM2)

Linear solenoid (SLM2)

Solenoid Start (Activate)

Solenoid SLM2

Toyota Prius Vehicle condition:

HINT:

To protect this Drive Circuit and Solenoid, this test will only last 2 seconds.

-

EBS Relay

Emergency brake signal operation

Relay Start

Toyota Prius Vehicle condition: Vehicle stopped

HINT:

To protect this Actuator and Solenoid, this test will only last 5 seconds.

Whether the hazard warning lights blink when the EBS Relay is on can be confirmed. (w/ Emergency Brake Signal)

ABS Solenoid

Pressure holding solenoid (SFRH, SFLH, SRRH, SRLH)

Pressure reduction solenoid (SFRR, SFLR, SRRR, SRLR)

Solenoid Start (Activate)

Solenoid SFRH / SFLH / SRRH / SRLH / SFRR / SFLR / SRRR / SRLR

Toyota Prius Vehicle condition:

HINT:

To protect actuator and Solenoid(s), this test will continue for 25 seconds.

Check that the GTS display for the solenoid (SRLR, SRLH, SRRR, SRRH, SFLR, SFLH, SFRR or SFRH) changes to ON/OFF during Solenoid Start (Activate)

VSC Solenoid

Master cylinder cut solenoid (SM1, SM2)

Solenoid Start (Activate)

Solenoid SM1 / SM2

Toyota Prius Vehicle condition:

HINT:

To protect actuator and Solenoid(s), this test will continue for 25 seconds.

Check that the GTS display for the solenoid (SM1 or SM2) changes to ON/OFF during Solenoid Start (Activate)

Motor Relay

ABS motor relay

OFF / ON

Toyota Prius Vehicle condition: Vehicle stopped

HINT:

To protect this Actuator and Solenoid, this test will only last 5 seconds.

Operating sound of motor can be heard

Solenoid Relay

Solenoid relay

OFF / ON

Toyota Prius Vehicle condition: Vehicle stopped

HINT:

To protect this Actuator and Solenoid, this test will only last 5 seconds.

Perform the Active Test and check that the voltage displayed for the solenoid power supply voltage Data List item changes.

Stop Lamp Relay

Stop light control relay (stop light switch assembly)

OFF / ON

Toyota Prius Vehicle condition: Vehicle stopped

HINT:

To protect this Actuator and Solenoid, this test will only last 5 seconds.

With the brake pedal released, check that the stop lights illuminate and the value of Stop Light Relay on the GTS changes to ON when Stop Lamp Relay is ON

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

HINT:

A float is located inside the brake master cylinder reservoir assembly. Its position changes according to the level of brake fluid.

Standard Resistance:

Auxiliary battery

Ignition switch off

11 to 14 V

V

*a

Pedal Effort Gauge

*b

SST (LSPV Gauge)

*c

SST (No. 1 Nipple)

-

-

Servo Pressure

Gap Hold Chamber Oil Pressure

Master Cylinder Sensor 1

50 N (5 kgf, 11.2 lbf)

0.00 to 0.75 MPa

0.41 to 6.07 MPa

0.11 to 5.77 MPa

0.11 to 5.77 MPa (1.12 to 58.88 kgf/cm2, 16 to 837 psi)

0.41 to 6.07 MPa (4.18 to 61.94 kgf/cm2, 59 to 880 psi)

100 N (10 kgf, 22.5 lbf)

0.63 to 1.43 MPa

3.31 to 8.93 MPa

3.01 to 8.63 MPa

3.01 to 8.63 MPa (30.71 to 88.06 kgf/cm2, 436 to 1251 psi)

3.31 to 8.93 MPa (33.78 to 91.12 kgf/cm2, 480 to 1295 psi)

150 N (15 kgf, 33.7 lbf)

1.33 to 2.13 MPa

5.62 to 11.44 MPa

5.32 to 11.14 MPa

5.32 to 11.44 MPa (54.29 to 113.67 kgf/cm2, 771 to 1659 psi)

5.62 to 11.44 MPa (57.35 to 116.73 kgf/cm2, 815 to 1659 psi)

200 N (20 kgf, 45.0 lbf)

2.03 to 2.83 MPa

7.10 to 12.60 MPa

6.80 to 12.30 MPa

6.80 to 12.30 MPa (69.39 to 125.51 kgf/cm2, 986 to 1784 psi)

7.10 to 12.60 MPa (72.45 to 128.57 kgf/cm2, 1030 to 1827 psi)

Auxiliary battery

Ignition switch off

11 to 14 V

V

*a

Pedal Effort Gauge

*b

SST (LSPV Gauge)

*c

SST (No. 1 Nipple)

-

-

(3) Check operation without brake boost.

(1) Inspect and adjust the brake pedal height.

(2) Adjust the brake fluid level of the reservoir so that it is between the MIN line and MAX line.

(3) Select "Motor Deactivate" on the "ECB Utility" screen.

(4) Perform "Motor Deactivate" according to the display on the GTS.

(5) Depress the brake pedal 10 times or more.

(6) Check that the brake pedal is firm.

(7) Check the values output from "Stroke Sensor" and "Stroke Sensor2" by depressing the brake pedal.

Standard Result:

HINT:

Check the performance of the brake booster with master cylinder assembly by comparing the pedal force with the value of the LSPV gauge and each stroke sensor. If there is a problem, determine the state of the brake booster with master cylinder assembly by using these results together with the results from inspecting the brake pedal stroke sensor.

(8) Remove the pedal effort gauge and SST, and bleed the brake system.

HINT:

Click here

Auxiliary battery

Ignition switch off

11 to 14 V

V

Stroke Sensor

Stroke Sensor2

50 N (5 kgf, 11.2 lbf)

0.96 to 1.67 V

3.33 to 4.04 V

100 N (10 kgf, 22.5 lbf)

1.14 to 1.86 V

3.14 to 3.86 V

150 N (15 kgf, 33.7 lbf)

1.23 to 1.95 V

3.05 to 3.77 V

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

Standard Resistance:

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

Standard Resistance:

Vehicle Control History (RoB)

Vehicle Control History (RoB)

X0455

Steering Angle Sensor Wrong Installation

History of steering angle sensor being installed incorrectly

Output ECU: No. 2 skid control ECU (brake actuator assembly)

Refer to Steering Angle Sensor Wrong Installation (X0455).

X2005

Hybrid/EV Powertrain Control System Malfunction

History of a malfunction in the HEV system

Output ECU: No. 2 skid control ECU (brake actuator assembly)

X204C

Zero Point Calibration of Yaw Rate Sensor Undone

History of incomplete yaw rate sensor zero point calibration

Output ECU: No. 2 skid control ECU (brake actuator assembly)

Refer to Zero Point Calibration of Yaw Rate Sensor Undone (X204C).

X2086

SRS Airbag Malfunction

History of receiving a malfunction signal output for a secondary collision brake control request from the airbag ECU assembly 2 consecutive times

-

Output ECU: No. 2 skid control ECU (brake actuator assembly)

Refer to How to Proceed with Troubleshooting in Airbag System.

X2088

Bank Angle Detected

History of VSC operation being temporarily prohibited when driving at a steep bank angle, etc.

Output ECU: No. 2 skid control ECU (brake actuator assembly)

HINT:

Explain that VSC operation was temporarily prohibited when driving on a road with a steep bank angle, etc.

X208A

Zero Point Calibration of Steering Angle Sensor Initialization Malfunction

History of being unable to obtain the steering angle zero point after driving at a Toyota Prius vehicle speed exceeding 15 km/h (9 mph) for 0.05 seconds or more

Output ECU: No. 2 skid control ECU (brake actuator assembly)

X208B

EPB Motor Continuous Operation Request

History of system suspended to prevent overheat of parking brake actuator assembly when electric parking brake was used repeatedly

Brake hold operated indicator light blinks*1

Output ECU: No. 2 skid control ECU (brake actuator assembly)

X208E

Power Steering Control Module Malfunction

History of power steering system malfunction

Output ECU: No. 2 skid control ECU (brake actuator assembly)

X2096

Pre-Collision Brake

History of pre-collision brake operation

In accordance with advanced driver assistance system behavior

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X2098

Pre-Collision Brake Assist

History of pre-collision brake assist operation

In accordance with advanced driver assistance system behavior

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X20A0

ABS

History of ABS operation

Slip indicator light blinks

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X20A1

VSC

History of VSC operation

Slip indicator light blinks

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X20A2

TRC(TRAC)

History of TRAC operation

Slip indicator light blinks

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X20A5

Hill Start Assist

History of hill start assist operation

-

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X20A7

Brake Assist

History of brake assist operation

-

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X20A8

Secondary Collision Brake

History of secondary collision brake operation

-

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly)

X20D7

Zero Point Calibration of Steering Angle Sensor Malfunction

History of the steering angle sensor zero point calibration position differing from the stored value

Output ECU: No. 2 skid control ECU (brake actuator assembly)

Refer to Zero Point Calibration of Steering Angle Sensor Malfunction (X20D7).

X20D8

Zero Point Calibration of Steering Angle Sensor Not Acquired

History of being unable to obtain the steering angle zero point

Output ECU: No. 2 skid control ECU (brake actuator assembly)

Refer to Zero Point Calibration of Steering Angle Sensor Not Acquired (X20D8).

X219A

Gear Shift Control Module Malfunction

History of electronic shift lever system malfunction

-

Output ECU: No. 2 skid control ECU (brake actuator assembly)

X219C

EPB Lock Control Run

History of abnormal EPB operation

Brake system warning light (yellow indicator) illuminates

Output ECU: No. 2 skid control ECU (brake actuator assembly)

HINT:

EPB: Electric Parking Brake System

X21A1

Electronic Brake Booster Motor "A" High Temperature (Level1)

History of system being stopped to protect the brake booster with master cylinder assembly from overheating when brake control was operated repeatedly or operated for an extended period of time.

Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly)

X21AD

ABS Pump Motor Temperature High

History of extremely high ABS motor temperature due to automatic brake control (brake hold, dynamic radar cruise, advanced park, etc.) or long or frequent brake operation

-

Output ECU: No. 2 skid control ECU (brake actuator assembly)

X21D0

Brake Pedal Position Sensor "A" Performance Malfunction

History of malfunction of brake pedal stroke sensor 1