DTC 54: Fail-Safe Relay
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Test-drive the vehicle.
- 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 (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ), and retest.
NO - Intermittent failure, the vehicle is OK at this time.