DTC Troubleshooting: 51

DTC 51:  Motor Lock

1.Check the No. 10 (30A) fuse in the under-hood fuse/relay box.

Is the fuse OK?


YES - Reinstall the fuse, and go to 2.


NO - Replace the fuse, and recheck.n


2.Disconnect the negative cable from the battery.

3.Disconnect the ABS control unit 47P connector.

4.Reconnect the battery cable.

5.Measure the voltage between the ABS control unit 47P connector terminal No. 1 and body ground.

 

Is there battery voltage?


YES - Go to 6.


NO - Repair open in the wire between the No. 10 (30A) fuse and the ABS control unit.n

6.Check for continuity between the ABS control unit 47P connector terminal No. 47 and body ground.

 

Is there continuity?


YES - Go to 7.


NO - Repair open in the wire between the ABS control unit and body ground ( G202).n

7.Disconnect the negative cable from the battery.

8.Reconnect the ABS control unit 47P connector.

9.Reconnect the battery cable.

10.Clear the DTC.

11.Test-drive the vehicle at 6 mph (10 km/h) or more.

Does the ABS indicator come on, and is DTC 51 indicated?


YES - Replace the  ABS modulator-control unit.n


NO - The system is OK at this time.n