Vehicle Stability Assist (VSA)

VSA activation indicator does not come on at start-up (bulb check)
1. Turn the ignition switch 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. Refer to intermittent failures.
NO - Go to step 2.

2. Do the gauge control module self-diagnosis function procedure.
Is the gauge control module OK?
YES - Go to step 3.
NO - Replace the gauge control module.

3. Turn the ignition switch OFF.
4. Substitute a known-good VSA modulator-control unit.
5. Turn the ignition switch ON (II).
Does the VSA activation indicator come on?
YES - Replace the VSA modulator-control unit.
NO - Check for loose terminals in the gauge control module connectors. If connections are good, replace the gauge control module.