DTC 53

DTC 53: Motor Stuck ON

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

Is the pump motor running?

YES - Replace the VSA modulator-control unit.

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 open in the wire between the VSA modulator-control unit and body ground (G303).

5. Reconnect the VSA modulator-control unit 46P connector.
6. Turn the ignition switch to ON (II).
7. Clear the DTC with the HDS.
8. Test-drive the vehicle. Drive the vehicle at 10 mph (15 km/h) or more, with the engine speed at 21500 rpm or higher.
9. Check for DTCs with the HDS.

Is DTC 53 indicated?

YES - Check for loose terminals in the VSA modulator-control unit 46P connector. Check for a loose connection at G303. If necessary, substitute a known-good VSA modulator-control unit and retest.

NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the VSA modulator-control unit 46P connector. Check for a loose connection at G303. Refer to intermittent failures troubleshooting.