## DTC Troubleshooting: 54

DTC 54: | Fail-safe Relay

NOTE: If the DTCs shown below indicated with the DTC 54 at a time, troubleshoot DTCs shown below first, then troubleshoot the DTC 54.
DTC 31, 32, 33, 34, 35, 36, 37, 38: Solenoid

1. | Disconnect the VSA control unit 46P connector.

2. | Check the No. 15 (30 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES - Reinstall the fuse, the go to 3. NO - Go to 5.

3. | Mesure the voltage between VSA control unit 46P connector terminal No. 44 and body ground. Is there battery voltage? YES - Go to 4. NO - Repair open in the wire between No. 15 (30 A) fuse in the under-hood fuse/relay box and VSA modulator-control unit.n

4. | Check for continuity between VSA control unit 46P connector terminal No. 43 and body ground. Is there continuity? YES - Go to 5. NO - Repair open the wire between VSA modulator-control unit and body ground (G202).n

5. | Check for continuity between VSA control unit 46P connector terminal No. 44 and body ground. Is there continuity? YES - Repair short to body ground in the wire between No. 15 (30 A) fuse in the under-hood fuse/relay box and VSA modulator-control unit.n NO - Go to 6.

6. | Reconnect the VSA control unit 46P connector.

7. | Clear the DTCs using the HDS.

8. | Test-drive the vehicle at 15 km/h (9 mph) or more.

9. | Check the DTCs using the HDS. Does the VSA indicator come on, and are DTC 54 indicated? YES - Check for loose or poor connections in the VSA control unit 46P connector. If connections are good, replace the VSA modulator-control unit.n NO - The system is OK at this time.n