| DTC 51-12: | Motor Lock Circuit Malfunction |
| 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 the DTCs with the HDS. Is DTC 51-12 indicated? YES - Go to 5. 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 |
| 5. | Turn the ignition switch OFF. |
| 6. | Check the No. 3 MTR (30 A) fuse in the under-hood fuse/relay box. Is the fuse blown? YES - Go to 7. NO - Reinstall the checked fuse, then go to 9. |
| 7. | Disconnect the VSA modulator-control unit 37P connector. |
| 8. | Check for continuity between VSA modulator-control unit 37P connector terminal No. 14 and body ground.
Is there continuity? YES - Repair short in the wire between the No. 3 MTR (30 A) fuse and the VSA modulator-control unit.n NO - Install the new No. 3 MTR (30 A) fuse, then go to 10. |
| 9. | Disconnect the VSA modulator-control unit 37P connector. |
| 10. | Measure voltage between VSA modulator-control unit 37P connector terminal No. 14 and body ground.
Is there battery voltage? 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 - Repair open in the wire between the No. 3 MTR (30 A) fuse and the VSA modulator-control unit.n |