| DTC 54-03: | Fail-safe Relay 1 Stuck ON |
| DTC 54-21: | Fail-safe Relay 1 Stuck OFF (Main) |
| 1. | Turn the ignition switch ON (II). |
| 2. | Clear the DTC with the HDS. |
| 3. | Turn the ignition switch OFF, then turn it ON (II) again. |
| 4. | Check for DTCs with the HDS. Is DTC 54-03, 54-04, or 54-21 indicated? YES - Check for loose terminals in the VSA modulator-control unit 37P connector. If necessary, substitute a known-good VSA modulator-control unit and retest.n NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n |