DTC Troubleshooting: 8

DTC 8:  A Short 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 body ground and the climate control unit 30P connector terminals No. 2, 7, 8, 25 and 26 individually.

 

Is there continuity?


YES - Repair any short to body ground in the wire(s) between the  climate control unit and the air mix control motor.n


NO - Go to 4.

4.Turn the ignition switch ON (II), and check the same terminals for voltage.

 

Is there any voltage?


YES - Repair any short to power in the wire(s) between the  climate control unit and the air mix control motor. This short also may damage the  climate control unit. Repair the short to power before replacing the  climate control unit.n


NO - Substitute a known-good  climate control unit, and recheck. If the symptom/indication goes away, replace the original  climate control unit.n