Vehicle Jerks During TCS/VDC Activation

TROUBLE DIAGNOSES FOR SYMPTOMS

Vehicle Jerks During TCS/VDC Activation


1. ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

Perform ABS actuator and electric unit (control unit) self-diagnosis.
Are self-diagnosis result items displayed?
YES- After checking and repairing the applicable item, perform the ABS actuator and electric unit (control unit) self-diagnosis again.
NO- GO TO 2.

2. ENGINE SPEED SIGNAL INSPECTION

Perform data monitor with CONSULT for the ABS actuator and electric unit (control unit).
Is the engine speed at idle 400 rpm or higher?
YES- GO TO 4.
NO- GO TO 3.

3. ECM SELF-DIAGNOSIS

Perform ECM self-diagnosis.
Are self-diagnosis result items displayed?
YES- After checking and repairing the applicable item, perform the ECM self-diagnosis again.
NO- GO TO 4.

4. TCM SELF-DIAGNOSIS

Perform TCM self-diagnosis.
Are self-diagnosis result items displayed?
YES- After checking and repairing the applicable item, perform the TCM self-diagnosis again.
NO- GO TO 5.

5. CONNECTOR INSPECTION

Disconnect the ABS actuator and electric unit (control unit) connector and the ECM connectors and check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK- GO TO 6.
NG- Repair or replace the connector terminal.

6. CAN COMMUNICATION INSPECTION

Check the CAN communication system. CAN Communication System Inspection.
OK or NG
OK- Inspection End.
NG- Reconnect the connectors, and perform ABS actuator and electric unit (control unit) self-diagnosis.