Symptom Troubleshooting Index

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When the vehicle has one of these symptoms, check for VSA diagnostic trouble code (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 TROUBLESHOOTING INDEX

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, VSA indicator, or VSA OFF indicator do 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 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 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, and VSA indicator do not go off	Check for F-CAN DTCs, and troubleshoot and repair those first (see GENERAL TROUBLESHOOTING INFORMATION ). Symptom troubleshooting (see ABS INDICATOR, BRAKE SYSTEM INDICATOR, AND VSA INDICATOR DO NOT GO OFF ).