Recirculation Control Motor Circuit Troubleshooting
Recirculation Control Motor Circuit Troubleshooting1. Check the No. 30 (7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Replace the fuse, and recheck.
2. Disconnect the recirculation control motor 7P connector.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 1 terminal of the recirculation 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. 30 (7.5 A) fuse in the under-dash fuse/relay box and the recirculation control motor.
5. Turn the ignition switch OFF.
6. Test the recirculation control motor.
Are the recirculation control motor and linkage OK?
YES - Go to step 7.
NO - Replace the recirculation control motor, or repair the recirculation control linkage or doors.
7. Disconnect audio-HVAC display panel connector B (16P).
8. Check for continuity between the No. 10 and No. 11 terminals of audio-HVAC display panel connector B (16P) and body ground individually.
Is there continuity?
YES - Repair short to body ground in the wire(s) between the audio-HVAC display panel and the recirculation control motor.
NO - Go to step 9.
9. Turn the ignition switch ON (II), and check the same wires for voltage.
Is there any voltage?
YES - Repair short to power in the wire(s) between the audio-HVAC display panel and the recirculation control motor. This short may also damage the audio-HVAC display panel. Repair the short to power before replacing the audio-HVAC display panel.
NO - Go to step 10.
10. Turn the ignition switch OFF.
11. Check for continuity between the following terminals of audio-HVAC display panel connector B (16P) and the recirculation control motor 7P connector.
Is there continuity?
YES - Check for loose wire or poor connections at audio-HVAC display panel connector B (16P) and at the recirculation control motor 7P connector. If the connections are good, substitute a known-good audio-HVAC display panel, and recheck. If the symptom/indication goes away, replace the original audio-HVAC display panel.
NO - Repair open in the wire(s) between the audio HVAC display panel and the recirculation control motor.