DTC Troubleshooting: 51, 52
DTC 51:
 Motor Lock
DTC 52:
 Motor Stuck ON/OFF
  1. Turn the ignition switch to LOCK (0).
  1. Check the No. 2-5 (30 A) fuse in the under-hood fuse/relay box.
Is the fuse blown?
YES -
Go to Step 3 .
NO -
Reinstall the checked fuse, then go to Step 10 .
  1. Check for continuity between VSA modulator-control unit 47P connector terminal No. 1 and body ground.
Is there continuity?
YES -
Repair short to body ground in the wire between the No. 2-5 (30 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.■
NO -
Install a new No. 2-5 (30 A) fuse in the under-hood fuse/relay box, then go to Step 5 .
  1. Reconnect the VSA modulator-control unit 47P connector.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Test-drive the vehicle. Drive the vehicle at 15 km/h (10 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?
YES -
Replace the VSA modulator-control unit .■
NO -
Troubleshooting is complete.■
  1. Measure the voltage between VSA modulator-control unit 47P connector terminal No. 1 and body ground.
Is there battery voltage?
YES -
Go to Step 12 .
NO -
Repair open in the wire between the No. 2-5 (30 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.■
  1. Check for continuity between VSA modulator-control unit 47P connector terminal No. 47 and body ground.
Is there continuity?
YES -
Go to Step 13 .
NO -
Repair open in the wire between the VSA modulator-control unit and body ground (G202).■
  1. Reconnect the VSA modulator-control unit 47P connector.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Test-drive the vehicle. Drive the vehicle at 15 km/h (10 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?
YES -
Go to Step 18 .
NO -
The system is OK at this time.■
  1. Test-drive the vehicle. Drive the vehicle at 15 km/h (10 mph) or more.
    NOTE: Drive the vehicle on a straight section of road, not on a lift.
  1. Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit, then retest. If the VSA modulator-control unit was substituted, go to Step 1 .
NO -
If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.■