DTC J
DTC indicator J: A Short in the Air Mix Control Motor Circuit1. Disconnect the air mix control motor 7P connector.
Does the vehicle have a Navigation System?
YES - Go to step 5.
NO - Go to step 2.
2. Disconnect climate control unit connector B (20P).
3. Check for continuity between body ground and climate control unit connector B (20P) terminals No.1,7, 9, 11 and 13 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 any short to power in the wire(s) between the climate control unit and the air mix control motor This short may also damage the climate control unit Repair the short to power before replacing the climate control unit.
NO - 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.
5. Disconnect climate control unit connector B (26P).
6. Check for continuity between body ground and climate control unit connector B (26P) terminals No.1,3, 21, 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.
NO - Go to step 7.
7. 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 may also damage the climate control unit. Repair the short to power before replacing the climate control unit.
NO - 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.