Diesel Data: Automotive Repair

VSA System




VSA DTC Troubleshooting: 53

DTC 53:

Motor Stuck ON

1. Turn the ignition switch to ON (II) and check the pump motor.

Is the pump motor working?

YES -

Replace the VSA modulator-control unit Service and Repair.�

NO -

Go to step 2.

2. Turn the ignition switch to LOCK (0).

3. Disconnect the VSA modulator-control unit 46P connector.

4. Check for continuity between VSA modulator-control unit 46P connector terminal No. 46 and body ground.





Is there continuity?

YES -

Go to step 5.

NO -

Repair an open in the wire between the VSA modulator-control unit and body ground (G302).�

5. Reconnect the VSA modulator-control unit 46P connector.

6. Turn the ignition switch to ON (II).

7. Clear the DTCs with the HDS.

8. Turn the ignition switch to LOCK (0).

9. Test-drive the vehicle at 19 mph (30 km/h) or more.

NOTE: Drive the vehicle on the road, not on a lift.

10. Check for DTCs with the HDS.

Is DTC 53 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. If connections are good, replace the VSA modulator-control unit Service and Repair.�

NO -

Intermittent failure, the system is OK at this time. Check for loose terminals at the VSA modulator-control unit 46P connector. Refer to intermittent failures troubleshooting.�