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B1061






B1061-CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL CIRCUIT OPEN





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

Theory of Operation

The A/C Heater Control drives the Blend Door Actuator via the (C61) Blend Door Driver circuit and the (C34) Common Door Driver circuit. The A/C Heater Control drives the Mode Door 1 (Floor to Panel) Actuator via the (C29) Mode Door 1 Driver circuit and the (C34) Common Door Driver circuit. The A/C Heater Control drives the Mode Door 2 (Floor to Defrost) Actuator via the (C801) Mode Door 2 Driver circuit and the (C34) Common Door Driver circuit. The A/C Heater Control drives the Recirculation Door Actuator via the (C32) Recirculation Door Driver circuit and the (C34) Common Door Driver circuit. All of the door actuators share the (C34) Common Door Driver circuit. Inside the A/C Heater Control, each door actuator has its own unique driver, but all share a single common door driver circuit. Due to the shared circuitry similar DTCs can set at the same time for multiple actuators depending upon the type of short, its location, and the direction the actuator is moving when the short is present.

- When Monitored:
When the Actuator DTC Detection Test is executed.

- Set Condition:
If the (C34) Common Door Driver circuit is open.





1. CHECK BLEND DOOR ACTUATOR CIRCUIT RESISTANCE




1. Turn the ignition off.
2. Disconnect the A/C Heater Control C1 harness connector.
3. Measure the resistance between the (C61) Blend Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector.

Is the resistance below 55 ohms?

Yes

- Go To 2

No

- Go To 6

2. CHECK MODE DOOR 1 (FLOOR TO PANEL) ACTUATOR CIRCUIT RESISTANCE




1. Measure the resistance between the (C29) Mode Door 1 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector.

Is the resistance below 55 ohms?

Yes

- Go To 3

No

- Go To 7

3. CHECK MODE DOOR 2 (FLOOR TO DEFROST) ACTUATOR CIRCUIT RESISTANCE




1. Measure the resistance between the (C801) Mode Door 2 Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector.

Is the resistance below 55 ohms?

Yes

- Go To 4

No

- Go To 8

4. CHECK RECIRCULATION DOOR ACTUATOR CIRCUIT RESISTANCE




1. Measure the resistance between the (C32) Recirculation Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector.

Is the resistance below 55 ohms?

Yes

- Go To 5

No

- Go To 9

5. RUN THE ACTUATOR DTC DETECTION TEST
1. Reconnect the A/C Heater Control C1 harness connector.
2. Turn the ignition on.
3. With the scan tool in HVAC, select System Tests and then select Actuator DTC Detection. When the test is complete, select View DTCs.

Does the scan tool only display: B1061-CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL CIRCUIT OPEN?

Yes

- Replace the A/C Heater Control.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No, Other DTCs Displayed

- Diagnose and repair the other DTCs. If multiple DTCs are present, beginning with the common circuit, diagnose and repair all short high DTCs and then all short low DTCs.

No, And No DTCs Displayed

- Using the wiring diagram as a guide, inspect the wiring and connectors for conditions causing an intermittent short. Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test

6. CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN TO THE BLEND DOOR ACTUATOR




1. Disconnect the Blend Door Actuator harness connector.
2. Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Blend Door Actuator harness connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the Blend Door Actuator.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

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

7. CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN TO THE MODE DOOR 1 ACTUATOR




1. Disconnect the Mode Door 1 Actuator harness connector.
2. Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door 1 (Floor to Panel) Actuator harness connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the Mode Door 1 (Floor to Panel) Actuator.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

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

8. CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN TO THE MODE DOOR 2 ACTUATOR




1. Disconnect the Mode Door 2 Actuator harness connector.
2. Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Mode Door 2 (Floor to Defrost) Actuator harness connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the Mode Door 2 (Floor to Defrost) Actuator.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

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

9. CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN TO THE RECIRCULATION DOOR ACTUATOR




1. Disconnect the Recirculation Door Actuator harness connector.
2. Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Recirculation Door Actuator harness connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the Recirculation Door Actuator.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

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

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