VDC/TCS/ABS

TROUBLE DIAGNOSIS FOR SYMPTOMS


Unexpected Pedal Action

1.CHECK WARNING LAMP ACTIVATION
Make sure warning lamp remains off while driving.
OK or NG
OK - GO TO 2.
NG - Carry out self-diagnosis. VDC/TCS/ABS.
2.CHECK BRAKE PEDAL STROKE





Check brake pedal stroke.
Is pedal stroke excessive?
YES - Perform Basic Inspection. VDC/TCS/ABS.
NO - GO TO 3.
3.CHECK CONNECTOR AND BRAKING PERFORMANCE
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check brake effectiveness.

NOTE:
Driving the vehicle with the ABS actuator and electric unit (control unit) disconnected may induce DTCs in electrical control units using CAN communication. After the inspection, clear all DTCs. VDC/TCS/ABS.
OK or NG
OK - GO TO 4.
NG - Perform Basic Inspection. VDC/TCS/ABS.
4.CHECK WHEEL SENSORS
Check the following.
- Wheel sensor mounting for looseness
- Wheel sensors for physical damage
- Wheel sensor connectors for terminal damage or loose connections
OK or NG
OK - Check ABS actuator and electric unit (control unit) pin terminals for damage and the connection of harness connector. Reconnect ABS actuator and electric unit (control unit) harness connector.
Then retest.
NG - Repair as necessary.