1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
3. Do the self-diagnostic function with the HDS or the climate control unit.
4. Check for DTCs.
Is DTC B1234 or K and AUTO indicated?
YES -
Go to step 5.
NO -
Intermittent failure, check for looses wires or poor connections in the driver's air mix control motor circuit.?
5. Check for DTCs.
Are these DTCs also present; B1237 or N and AUTO, and/or B1245 or G, and/or B2968 or A and WINDSHIELD DEFROST, and/or B2980 or B
and WINDSHIELD DEFROST?
YES -
Go to step 13.
NO -
Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Test the driver's air mix control motor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General
Diagnostics/Driver's Air Mix Control Motor Test.
Is the driver's air mix control motor OK?
YES -
Go to step 8.
NO -
Replace the driver's air mix control motor See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/Driver's Air
Mix Control Motor Replacement.?
8. Disconnect the driver's air mix control motor 7P connector.
9. Disconnect climate control unit connector A (40P).
10. Check for continuity between climate control unit connector A (40P) terminal No. 11 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between the climate control unit and the driver's air mix control motor.?
