| 1. | Check the No. 30 (7.5A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to 2. NO - Replace the fuse, and recheck.n |
| 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 5. NO - Repair open in the wire between the No. 30 fuse in the under-dash fuse/relay box and the recirculation control motor.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Test the recirculation control motor. Is the recirculation control motor OK? YES - Go to 7. NO - Replace the recirculation control motor.n |
| 7. | Disconnect the audio-HVAC module 22P connector. |
| 8. | Check for continuity between the No. 7 and No. 8 terminals of the audio-HVAC module 22P connector and body ground individually. Is there continuity? YES - Repair any short to body ground in the wire(s) between the audio-HVAC module and the recirculation control motor.n NO - Go to 9. |
| 9. | Turn the ignition switch ON (II), and check the same wires for voltage. Is there any voltage? YES - Repair any short to power in the wire(s) between the audio-HVAC module and the recirculation control motor. This short may also damage the audio-HVAC module. Repair the short to power before replacing the printed circuit board.n NO - Go to 10. |
| 10. | Turn the ignition switch OFF. |
| 11. | Check for continuity between the following terminals of the audio-HVAC module 22P connector and the recirculation control motor 7P connector.
Is there continuity? YES - Check for loose wires or poor connections at the audio-HVAC module 22P connector and at the recirculation control motor 7P connector. If the connections are good, substitute a known-good audio-HVAC module, and recheck. If the symptom/indication goes away, replace the original printed circuit board.n NO - Repair any open in the wire(s) between the audio-HVAC module and the recirculation control motor.n |