VSA System

VSA DTC Troubleshooting: 91

DTC 91:

VSA System

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

2. Check for DTCs with the HDS.

Is DTC 131, 132, or 134 indicated with DTC 91 at the same time?

YES -

Go to step 4.

NO -

Go to step 3.

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

Is the brake system OK? (brake fluid leakage, air trapped in the brake system, brake pads worn out)

YES -

Go to step 4.

NO -

Repair the brake system, then recheck.�

4. Clear the DTCs with the HDS.

5. Turn the ignition switch to LOCK (0).

6. 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/h), and stop.

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

7. Check for DTCs with the HDS.

Is DTC 91 indicated?

YES -

Replace the VSA modulator-control unit Service and Repair.�

NO -

Intermittent failure, the system is OK at this time.�