Diesel Data: Automotive Repair

VSA Activation Indicator Does Not Come on at Start-up (Bulb Check)

VSA activation indicator does not come on at start-up (bulb check)

1. Turn the ignition switch to ON (II), and watch the VSA activation indicator.

Does the VSA activation indicator come on for several seconds?

YES - The system is OK at this time.

NO - Go to step 2.

2. Apply the parking brake.

Does the brake system indicator come on?

YES - Go to step 3.

NO - Do the self-diagnostic function troubleshooting for the gauge assembly.

3. Turn the ignition switch to LOCK (0).
4. Disconnect the VSA modulator-control unit 47P connector.
5. Connect VSA modulator-control unit 47P connector terminal No. 35 and body ground with a jumper wire, and turn the ignition switch to ON (II).





Does the VSA activation indicator come on?

YES - Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, and retest.

NO - Repair open in the wire between the gauge assembly and the VSA modulator-control unit.