Brake Override System [12/2014 - ]: Procedure
- CHECK DTC OUTPUT (HEALTH CHECK)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON (IG).
- Enter the following menus: System Select / Health Check.
- Check DTCs.RESULT
Result Proceed to No DTCs are output. A DTCs are output. B - Turn the ignition switch off.
B → GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE TABLE [12/2014 - ] .
A: Go to next step
- READ VALUE USING TECHSTREAM (MASTER CYLINDER CTRL TRQ)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON (IG).
- Enter the following menus: Powertrain / Hybrid Control / Data List / Master Cylinder Ctrl Trq.
- Read the value displayed on the Techstream.
Tester Display Measurement Item/Range Normal Condition Master Cylinder Ctrl Trq Master cylinder control torque/
Min.: -4096 Nm, Max.: 4095 NmBrake pedal depressed: Changes with the brake pedal pressure
Brake pedal released: 0 NmResult
Result Proceed to Displayed value changes according to the brake pedal pressure. A Displayed speed value does not change according to the brake pedal pressure. B - Turn the ignition switch off.
B → See step 8
A: Go to next step
- READ VALUE USING TECHSTREAM (ACCEL PEDAL POS #1, ACCEL PEDAL POS #2)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON (IG).
- Enter the following menus: Powertrain / Hybrid Control / Data List / Accel Pedal Pos #1, Accel Pedal Pos #2.
- Read the value displayed on the Techstream.
Tester Display Measurement Item/Range Normal Condition Accel Pedal Pos #1 Accelerator pedal position sensor No. 1/
Min.: 0%, Max.: 100%Accelerator pedal released → depressed → released: Changes with accelerator pedal pressure Accel Pedal Pos #2 Accelerator pedal position sensor No. 2/
Min.: 0%, Max.: 100%Result
Result Proceed to Displayed speed values smoothly changes following accelerator pedal operation. A Displayed speed values does not smoothly change following accelerator pedal operation. B - Turn the ignition switch off.
B → See step 7
A: Go to next step
- READ VALUE USING TECHSTREAM (VEHICLE SPD)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON (IG).
- Enter the following menus: Powertrain / Hybrid Control / Data List / Vehicle Spd.
- Read the value displayed on the Techstream.
Tester Display Measurement Item/Range Normal Condition Vehicle Spd Vehicle speed/
Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)Vehicle stopped: 0 km/h (0 mph)
No large fluctuations when driving at a constant speed: Vehicle running at constant speed between 16 to 64 km/h (10 to 40 mph)Result
Result Proceed to Displayed speed value does not fluctuate. A Displayed speed value fluctuates. B 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.
- Turn the ignition switch off.
B → See step 6
A: Go to next step
- READ VALUE USING TECHSTREAM (FR, FL, RR, RL WHEEL SPEED)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON (READY).
- Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / All Data / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed.
- Read the value displayed on the Techstream.
Tester Display Measurement Item/Range Normal Condition FR Wheel Speed Front speed sensor RH /
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)Vehicle stopped: 0 km/h (0 mph)
No large fluctuations when driving at a constant speed: Vehicle running at constant speed between 16 to 64 km/h (10 to 40 mph)FL Wheel Speed Front speed sensor LH /
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)RR Wheel Speed Rear speed sensor RH /
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)RL Wheel Speed Rear speed sensor LH /
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)Result
Result Proceed to Displayed speed value does not fluctuate. A Displayed speed value fluctuates. B 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.
- Turn the ignition switch off.
B → INSPECT FRONT OR REAR SPEED SENSOR
A → END
- GO TO METER / GAUGE SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2014 - ]
- REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY. Refer to COMPONENTS [12/2014 - ]
- CHECK BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to ON-VEHICLE INSPECTION [12/2014 - ] - Step 2