B1043

B1043-PANEL MODE DOOR 1 CONTROL CIRCUIT OPEN





For a complete wiring diagram Consult Diagrams/Electrical.

Theory of Operation

The A/C Heater Control drives the Mode Door Actuator via the (C35) Mode Door Driver circuit and the (C34) Common Door Driver circuit.

- When Monitored:
With the ignition on.

- Set Condition:
If Mode Door Actuator's electrical circuit is open.





Diagnostic Test

1. ACTIVE DTC(S) PRESENT
Turn the ignition on.
Using the A/C Heater Control, actuate the Panel Mode Door.
With the scan tool, check for DTCs.
Does the scan tool display this DTC as active?

Yes

- Go to 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

2. CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN




Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Disconnect the Mode Door Actuator harness connector.
Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door Actuator harness connector.
Does the ohm meter read open circuit?

Yes

- Repair the (C34) Common Door Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go to 3.

3. CHECK (C35) MODE DOOR DRIVER CIRCUIT FOR AN OPEN




Measure the resistance of the (C35) Mode Door Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door Actuator harness connector.
Does the ohm meter read open circuit?

Yes

- Repair the (C35) Mode Door Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go to 4.

4. CHECK MODE DOOR ACTUATOR CIRCUIT RESISTANCE




Reconnect the Mode Door Actuator harness connector.
Measure the resistance between the (C35) Mode Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector.
Is the resistance between 30 and 40 ohms?

Yes

- Replace the A/C Heater Control.

No

- Replace the Mode Door Actuator.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.