Brake Override System [12/2023 - ]: Procedure

1. Enter the following menus: System Select / Health Check.
2. Check for DTCs.

   Result

   Result	Proceed to
   No DTCs are output.	A
   DTCs are output.	B

3. Turn the ignition switch off.

Result: 

B 

GO TO DTC CHART 

Result: 

A 

See step  2

1. Enter the following menus: Powertrain / EV / Data List / Master Cylinder Control Torque.

   Powertrain > EV > Data List 

   Tester Display
   Master Cylinder Control Torque

   Powertrain > EV > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Master Cylinder Control Torque	Braking torque equivalent to master cylinder brake fluid pressure Total braking torque Master cylinder brake fluid pressure control torque = hydraulic brake control torque + rear regenerative brake torque	-	Brake pedal depressed: Changes with the brake pedal pressure	Master cylinder pressure sensor

   Result

   Result	Proceed to
   Display changes according to brake pedal depression force.	A
   Display does not change according to brake pedal depression force.	B

2. Turn the ignition switch off.

Result: 

B 

CHECK BRAKE MASTER CYLINDER ASSEMBLY. Refer to  ON-VEHICLE INSPECTION [11/2020 - ] 

Result: 

A 

See step  3

1. Read the value of "Accelerator Position Sensor No. 1 Voltage %" and "Accelerator Position Sensor No. 2 Voltage %" displayed on the GTS.

   Powertrain > EV > Data List 

   Tester Display
   Accelerator Position Sensor No. 1 Voltage %
   Accelerator Position Sensor No. 2 Voltage %

   HINT: 

   If the Data List updates slowly, perform measurement after selecting only the "Accelerator Position Sensor No. 1 Voltage %" and "Accelerator Position Sensor No. 2 Voltage %" items.

   Standard

   Inspection Condition	Specified Condition
   Accelerator pedal fully released → fully depressed	Value (%) changes with accelerator pedal operation

2. Turn the ignition switch off.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ACCELERATOR PEDAL WITH SENSOR ROD ASSEMBLY. Refer to  REMOVAL [11/2020 - ] 

Result: 

OK 

See step  4

1. Read the value of "Vehicle Speed" displayed on the GTS.

   Powertrain > EV > Data List 

   Tester Display
   Vehicle Speed

   HINT: 

   If the Data List updates slowly, perform measurement after selecting only the "Vehicle Speed" item.

   Standard

   Inspection Condition	Specified Condition
   Vehicle stopped	0 km/h (0 mph)
   Vehicle being driven at a constant speed (16 to 64 km/h (10 to 40 mph))	No large fluctuations in displayed speed

   WARNING:

   Perform this road test only in an appropriate safe location, in accordance with all local laws.

   HINT: 

   Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.

2. Turn the ignition switch off.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO METER / GAUGE SYSTEM (SPEED SIGNAL CIRCUIT). Refer to  Speed Signal Circuit [12/2023 - ] 

Result: 

OK 

See step  5

1. Read the value of "FR Wheel Speed", "FL Wheel Speed", "RR Wheel Speed" and "RL Wheel Speed" displayed on the GTS.

   Chassis > Brake/EPB > Data List 

   Tester Display
   FR Wheel Speed
   FL Wheel Speed
   RR Wheel Speed
   RL Wheel Speed

   HINT: 

   If the Data List updates slowly, perform measurement after selecting only the "FR Wheel Speed", "FL Wheel Speed", "RR Wheel Speed" and "RL Wheel Speed" items.

   Standard

   Inspection Condition	Specified Condition
   Vehicle stopped	0 km/h (0 mph)
   Vehicle being driven at a constant speed (16 to 64 km/h (10 to 40 mph))	No large fluctuations in displayed speed

   WARNING:

   Perform this road test only in an appropriate safe location, in accordance with all local laws.

   HINT: 

   Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.

2. Turn the ignition switch off.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

INSPECT FRONT OR REAR SPEED SENSOR. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2023 - ]