DTC 54

DTC 54: Fail-safe Relay Malfunction
1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON (II).
5. Check for DTCs with the HDS.
Is DTC 54 indicated?
YES - Replace the servo unit.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the servo unit.