DTC J

DTC indicator light J: A Short in the Air Mix Control Motor Circuit

1. Disconnect the air mix control motor 5P connector.
2. Disconnect climate control unit connectors A (12P) and B (20P).







3. Check for continuity between body ground and climate control unit connector A (12P) terminals No. 2 and 7 individually, and between body ground and climate control unit connector B (20P) terminals No. 6, 7 and 15 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.

NO - Go to step 4.







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

Is there any voltage?

YES - Repair short to power in the wire between the climate control unit and the air mix control motor. This short also damages the climate control unit. Repair the short to power before replacing the climate control unit.

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