Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for VSA diagnostic trouble codes (DTCs) with the HDS. If there are no DTCs, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.
| Symptom |
Diagnostic procedure |
Also check for |
| HDS does not communicate with the VSA modulator-control unit or the vehicle |
Troubleshoot the DLC circuit (see
DLC CIRCUIT TROUBLESHOOTING
). |
|
| ABS indicator, brake system indicator (red), VSA indicator, brake system indicator (amber) or VSA OFF indicator does not come on at start-up (bulb check) |
- Do the gauge control module self-diagnostic function, (see
SELF-DIAGNOSTIC FUNCTION
).
- Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
If the VSA modulator-control unit was updated and the symptom is still present, replace the original VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).
|
|
| VSA cannot be turned OFF |
- Symptom troubleshooting (see VSA CANNOT BE TURNED OFF ).
- Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
If the VSA modulator-control unit was updated and the symptom is still present, replace the original VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).
|
|
| VSA OFF indicator does not go off |
Do the VSA sensor neutral position memorization (see VSA SENSOR NEUTRAL POSITION MEMORIZATION ). |
|
| ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off |
- Check for F-CAN DTCs, and troubleshoot and repair those first.
- Symptom troubleshooting (see ABS INDICATOR, BRAKE SYSTEM INDICATOR (RED), VSA INDICATOR, AND BRAKE SYSTEM INDICATOR (AMBER) DO NOT GO OFF ).
|
|