DTC Troubleshooting: 7

DTC 7:  An Open in the Air Mix Control Motor Circuit

1.Disconnect the air mix control motor 7P connector.

2.Disconnect the climate control unit 30P connector.

3.Check for continuity between following terminals of the climate control unit 30P connector and the air mix control motor 7P connector.

30P: 7P: 
No. 2 No. 7 
No. 7 No. 3 
No. 8 No. 5 
No. 25 No. 2 
No. 26 No. 1 

 

Is there continuity?


YES - Check for loose wires or poor connections at the climate control unit 30P 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 he wire(s) between the  climate control unit and the air mix control motor.n