DTC I
DTC indicator I: An open in the air mix control motor circuit1. Test the air mix control motor.
Does the air mix control motor test OK?
YES - Go to step 2.
NO - Replace the air mix control motor.
2. Disconnect the air mix control motor 7P connector.
3. Disconnect climate control unit connector B (26P).
4. Check for continuity between the following terminals of climate control unit connector B (26P) and the air mix control motor 7P connector.
26P: 7P:
No.1 No.5
No.3 No.7
No.21 No.3
No.25 No.2
No.26 No.1
Is there continuity?
YES - Check for loose wires or poor connections at climate control unit connector B (26P) and at the air mix control motor 7P connector. If the connections are good, substitute a known-good air mix control motor, and recheck. If the symptom/indication goes away, replace the original air mix control motor. If the symptom/indication continues, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.
NO - Repair any open in the wire(s) between the climate control unit and the air mix control motor.