Diesel Data: Automotive Repair

Manufacturer Code Charts: 54




VSA DTC Troubleshooting: 54

DTC 54:

Fail-Safe Relay

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

2. Clear the DTC with the HDS.

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

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

4. Check for DTCs with the HDS.

Is DTC 54 indicated?

YES -

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

NO -

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