Vehicle Jerks During VDC/TCS/ABS Control

VEHICLE JERKS DURING VDC/TCS/ABS CONTROL

Diagnosis Procedure

1. SYMPTOM CHECK
Check if the vehicle jerks during VDC/TCS/ABS control.
Is the inspection result normal?
YES >> Normal.
NO >> GO TO 2

2. CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer to BRC-21, "CONSULT-III Function (ABS)". CONSULT-III Function (ABS)
Are self-diagnosis results indicated?
YES >> Check corresponding items, make repairs, and perform ABS actuator and electric unit (control unit) self-diagnosis.
NO >> GO TO 3

3. CHECK CONNECTOR
^ Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector and check terminal for deformation, disconnection, looseness, etc.
^ Securely connect connectors and perform ABS actuator and electric unit (control unit) self-diagnosis.
Are self-diagnosis results indicated?
YES >> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.
NO >> GO TO 4

4. CHECK ECM AND TCM SELF-DIAGNOSIS RESULTS
Perform ECM and TCM self-diagnosis.
Are self-diagnosis results indicated?
YES >> Check the corresponding items.
^ ECM: Refer to EC-74, "CONSULT-III Function (ENGINE)" (VQ40DE) or EC-542, "CONSULT-III Function (ENGINE)" (VK56DE).

CONSULT-III Function (Engine)
^ TCM: Refer to TM-35, "CONSULT-III Function (TRANSMISSION)". Consult-III Function (Transmission)
NO >> Replace ABS actuator and electric unit (control unit).