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 heater control panel 36P connector.

3.Check for continuity between the following terminals of the heater control panel 36P connector and the air mix control motor 7P connector.

36P: 7P: 
No. 2 No. 7 
No. 10 No. 3 
No. 11 No. 5 
No. 32 No. 2 
No. 33 No. 1 

 

Is there continuity?


YES - Check for loose wires or poor connections at the heater control panel 36P connector 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 heater control panel, and recheck. If the symptom/indication goes away, replace the original heater control panel.n


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