VSA System

VSA DTC Troubleshooting: 91

DTC 91:

VSA System

1. Check the brake system for leaks or mechanical problems.

Is the brake system OK? (No brake fluid leakage, no air trapped in the brake system, OEM brake pads installed, brake pads within specifications)?

YES -

Go to step 2.

NO -

Repair the brake system, then recheck.�

2. Turn the ignition switch to ON (II).

3. Clear the DTC with the HDS.

4. Test-drive the vehicle in a straight line. Accelerate the vehicle up to 6 mph (10 km/h), and stop, then accelerate up to 6 mph (10 km/).

NOTE: Drive the vehicle on the road, not on a lift.

5. Check for DTCs with the HDS.

Is DTC 91 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. If necessary, substitute a known-good VSA modulator-control unit Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1 88.

NO -

Intermittent failure, the system is OK at this time. Check for loose terminals at the VSA modulator-control unit 46P connector. Refer to intermittent failures troubleshooting Reading and Clearing Diagnostic Trouble Codes.�