81-53

VSA DTC Troubleshooting: 81-51, 81-53, 81-55, 81-57

DTC 81-51:

Central Processing Unit (CPU) Internal Circuit Malfunction

DTC 81-53:

Central Processing Unit (CPU) Internal Circuit Malfunction

DTC 81-55:

Central Processing Unit (CPU) Internal Circuit Malfunction

DTC 81-57:

Central Processing Unit (CPU) Internal Circuit Malfunction

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

2. Clear the DTC with the HDS.

3. Test-drive the vehicle.

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

4. Check for DTCs with the HDS.

Is DTC 81-51, 81-53, 81-55, or 81-57 indicated?

YES -

Go to step 5.

NO -

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

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

6. Disconnect the VSA modulator-control unit 37P connector.

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

8. Measure the voltage between body ground and the appropriate VSA modulator-control unit 37P connector terminals (see table).









Is there 0.1 V or more?

YES -

Repair a short to power in the wire between the appropriate wheel speed sensor and the VSA modulator-control unit.�

NO -

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