2007 Commander XK Factory Service Manual 24 - HEATING & AIR CONDITIONING

B1043-PANEL MODE DOOR 1 CONTROL CIRCUIT OPEN (ATC)





For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
(C266) FRONT MODE DOOR DRIVER CIRCUIT OPEN
 
(C66) FRONT MODE DOOR COMMON DRIVER CIRCUIT OPEN
 
FRONT MODE DOOR ACTUATOR
 
A/C HEATER CONTROL
 




Diagnostic Test

1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs

Turn the ignition on.
With the scan tool, read active HVAC DTCs.

Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE DTCs?

Yes


No

2. CHECK THE FRONT MODE DOOR ACTUATOR CIRCUIT RESISTANCE



Turn the ignition off.
Disconnect the A/C Heater Control C2 harness connector.
Measure the resistance between the (C266) Front Mode Door Driver circuit and the (C66) Front Mode Door Common Driver circuit in the A/C Heater Control C2 harness connector.

Is the resistance above 70.0 ohms?

Yes


No

3. CHECK THE (C266) FRONT MODE DOOR DRIVER CIRCUIT FOR AN OPEN



Disconnect the Front Mode Door Actuator harness connector.
Measure the resistance of the (C266) Front Mode Door Driver circuit between the Front Mode Door Actuator harness connector and the A/C Heater Control C2 harness connector.

Is the resistance below 5.0 ohms?

Yes


No

4. CHECK THE (C66) FRONT MODE DOOR COMMON DRIVER CIRCUIT FOR AN OPEN



Measure the resistance of the (C66) Front Mode Door Common Driver circuit between the Front Mode Door Actuator harness connector and the A/C Heater Control C2 harness connector.

Is the resistance below 5.0 ohms?

Yes


No