Rear Mode Control Motor Circuit
Rear Mode Control Motor Circuit Troubleshooting1. Check the No. 3 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Replace the fuse, and recheck.
2. Disconnect the rear mode control motor 7P connector.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 1 terminal of the rear mode control motor 7P connector and body ground.
Is there battery voltage?
YES - Go to step 5.
NO - Repair open in the wire between the No. 3 fuse in the driver's under-dash fuse/relay box and the rear mode control motor.
5. Turn the ignition switch OFF.
6. Test the rear mode control motor.
Is the rear mode control motor OK?
YES - Go to step 7.
NO - Go to step 12.
7. Disconnect the rear heater-A/C control panel-unit 14P connector.
8. Check for continuity between the No. 2 and No. 8 terminals of the rear heater-A/C control panel-unit 14P connector and body ground individually.
Is there continuity?
YES - Repair short to body ground in the wire(s) between the rear heater-A/C control unit and the rear mode control motor.
NO - Go to step 9.
9. Turn the ignition switch ON (II), and check the same terminals for voltage.
Is there any voltage?
YES - Repair short to power in the wire(s) between the rear heater-A/C control panel-unit and the rear mode control motor. This short also damages the rear heater-A/C control panel-unit. Repair the short to power before replacing the rear heater-A/C control panel-unit.
NO - Go to step 10.
10. Turn the ignition switch OFF.
11. Check for continuity between the following terminals of the rear heater-A/C control panel-unit 1 4P connector and the rear mode control motor 7P connector.
14P: 7P:
No. 2 No. 7
No. 8 No. 5
Is there continuity?
YES - Check for loose wires or poor connections at the rear heater-A/C control panel-unit 14P connector and at rear mode control motor 7P connector. If the connections are good, substitute a known-good rear heater-A/C control panel-unit, and recheck. If the symptom/indication goes away, replace the original rear heater-A/C control panel unit.
NO - Repair open in the wire(s) between the rear heater-A/C control panel-unit and the rear mode control motor.
12. Remove the rear mode control motor.
13. Check the rear mode control linkage and door for smooth movement.
Do the rear mode control linkage and door move smoothly?
YES - Replace the rear mode control motor.
NO - Repair the rear mode control linkage or door.