DTC 81-55

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 ON (II).
2. Clear the DTC with the HDS.
3. Test-drive the vehicle.
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 OFF.
6. Disconnect the VSA modulator-control unit 37P connector.
7. Turn the ignition switch ON (II).
8. Measure 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 Short to power in the wire between the appropriate wheel sensor and the VSA modulator-control unit.

NO - Replace the VSA modulator-control unit.