DTC I

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

1. Disconnect the air mix control motor 5P connector.
2. Disconnect heater control panel connector B (22P).




3. Check for continuity between following terminals of heater control panel connector B (22P) and the air mix control motor 5P connector.
22P: 5P:
No. 5 No. 2
No. 12 No. 4
No. 14 No. 3
No. 15 No. 1
No. 16 No. 5

Is there continuity?

YES - Test the air mix control motor. If the motor is OK, check for loose wires or poor connections at heater control panel connector B (22P) and at the air mix control motor 5P connector. If the connections are good, substitute a known-good heater control panel, and recheck. If the symptom/indication goes away, replace the original heater control panel.

NO - Repair any open in the wire(s) between the heater control panel and the air mix control motor.