## DTC Troubleshooting: I

DTC indicator I: | An Open in the Air Mix Control Motor Circuit

1. | Clear the DTC by turning the ignition switch OFF, and then ON (II).

2. | Operate the climate control system in several modes.

3. | Check for DTCs using the self-diagnostic. Is DTC I indicated? YES - Go to 4. NO - Intermittent failure, check for loose wires or poor connections on the air mix control motor circuit.n

4. | Turn the ignition switch OFF.

5. | Test the air mix control motor. Is the air mix control motor OK? YES - Go to 6. NO - Replace the air mix control motor.n

6. | Disconnect the air mix control motor 7P connector.

7. | Disconnect climate control unit 28P connector.

8. | Check for continuity between following terminals of climate control unit 28P connector and the air mix control motor 7P connector.
28P: | 7P:
--- | ---
No. 9 | No. 1
No. 10 | No. 2
No. 15 | No. 5
No. 18 | No. 7
No. 23 | No. 3
Is there continuity? YES - Check for loose wire or poor connections at climate control unit 28P connector and at the air mix control motor 7P connector. If the connections are good, substitute a known-good climate control unit and recheck. If the symptom/indication goes away, replace the original climate control unit.n NO - Repair any open in the wire(s) between the climate control unit and the air mix control motor.n