VSA System Symptom Troubleshooting Index(VSA System Components)

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 .	Power and ground at the VSA modulator-control unit.
ABS indicator, brake system indicator (red), VSA indicator, or VSA OFF indicator do not come on at start-up (bulb check)	Do the gauge control module self-diagnostic function .
VSA cannot be turned OFF	1. Symptom troubleshooting - Refer to: VSA System Symptom Troubleshooting - VSA cannot be turned OFF . 2. Update the VSA modulator-control unit if it does not have the latest software . If the VSA modulator-control unit was updated and the symptom is still present, replace the VSA modulator-control unit .
VSA OFF indicator does not go off	1. Do the VSA sensor neutral position memorization . 2. Do the gauge control module self-diagnostic function . 3. Update the VSA modulator-control unit if it does not have the latest software . If the VSA modulator-control unit was updated and the symptom is still present, replace the VSA modulator-control unit .
ABS indicator, brake system indicator (red), and VSA indicator do not go off	1. Check for F-CAN DTCs, and troubleshoot and repair those first . 2. Symptom troubleshooting - Refer to: VSA System Symptom Troubleshooting - ABS indicator, brake system indicator, and VSA indicator do not go off .