Front Passengers Door Switch Circuit Troubleshooting

Keyless/Power Door Locks/Security System Symptom Troubleshooting - Front passenger's door switch circuit troubleshooting

Front passenger's door switch circuit troubleshooting

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

2. With the front passenger's door closed, select SECURITY with the HDS, and enter the DATA LIST.

3. Check the ON/OFF information of the FRONT PASSENGER'S DOOR SWITCH in the DATA LIST.

Is information indicator ON?

YES -

Go to step 4.

NO -

Go to step 8.

4. Disconnect the front passenger's door switch 2P connector.

5. Check the ON/OFF information of the FRONT PASSENGER'S DOOR SWITCH in the DATA LIST.

Is information indicator OFF?

YES -

Faulty front passenger's door switch; replace the front passenger's door latch Service and Repair.

NO -

Go to step 6.

6. Disconnect front passenger's MPCS unit connector A (28P).

7. Check for continuity between front passenger's MPCS unit connector A (28P) terminal No. 28 and body ground.





Is there continuity?

YES -

Repair a short to ground in the wire.

NO -

Replace the front passenger's MPCS unit Power Windows (Front Passengers MPCS Unit) Input Test/Replacement.

8. Disconnect the front passenger's door switch 2P connector.

9. Connect front passenger's door switch 2P connector terminal No. 2 to body ground with a jumper wire.





10. Check the ON/OFF information of the FRONT PASSENGER'S DOOR SWITCH in the DATA LIST.

Is information indicator ON?

YES -

Go to step 11.

NO -

Go to step 12.

11. Check for continuity between front passenger's door switch 2P connector terminal No. 1 and body ground.





Is there continuity?

YES -

Faulty front passenger's door switch; replace the front passenger's door latch Service and Repair.

NO -

Repair an open or high resistance in the ground wire or poor ground (G506).

12. Connect front passenger's MPCS unit connector A (28P) terminal No. 28 to body ground with a jumper wire.





13. Check the ON/OFF information of the FRONT PASSENGER'S DOOR SWITCH in the DATA LIST.

Is information indicator ON?

YES -

Repair an open or high resistance in the wire.

NO -

Replace the front passenger's MPCS unit Power Windows (Front Passengers MPCS Unit) Input Test/Replacement.