ABS System

ABS DTC Troubleshooting: 81

DTC 81:

Modulator-Control Unit Internal Circuit Malfunction

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

2. Check for other system DTCs.

Is another DTC indicated?

YES -

Do the appropriate troubleshooting for the DTC.�

NO -

Go to step 3.

3. Clear the DTC with the HDS.

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

5. Test-drive the vehicle at 19 mph (30 km/h) or more.

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

6. Check for DTCs with the HDS.

Is DTC 81 indicated?

YES -

Check for loose terminals in the ABS modulator-control unit 47P connector. If necessary, substitute a known-good ABS modulator-control unit, and retest.�

NO -

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.�