B1043

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

B1043 - Panel Mode Door 1 Control Circuit Open (ATC):

WHEN MONITORED
When actuator movement is requested.

SET CONDITION
If the (C266) Front Mode Door Driver circuit or the (C66) Front Mode Door Common Driver circuit is open.

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.

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

YES: Diagnose and repair the DTC(s).
NO: Go To 2

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.

Q: Is the resistance above 70.0 ohms?

YES: Go To 3
NO: Replace the A/C Heater Control. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

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.

Q: Is the resistance below 5.0 ohms?

YES: Go To 4
NO: Repair the (C266) Front Mode Door Driver circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

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.

Q: Is the resistance below 5.0 ohms?

YES: Replace the Front Mode Door Actuator. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the (C66) Front Mode Door Common Driver circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test