B10AF

B10AF-RIGHT BLEND DOOR ACTUATOR PERFORMANCE

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

Theory of Operation

The A/C Heater Control monitors the door driver circuits during actuator operation for conditions that prevent proper door operation. If a pulse count error is detected the A/C Heater Control reports the fault as a Actuator Performance DTC. It is important to note that this DTC only indicates that a fault occurred while driving a door actuator and that additional testing is necessary to provide more details about the reported fault.

- When Monitored:
When actuator movement is requested.

- Set Condition:
If the A/C Heater Control detects a pulse count error while attempting to drive this door actuator.





1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE AND CONTROL CIRCUIT OPEN DTCs
1. Turn the ignition on.
2. With the scan tool, read active HVAC DTCs.

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

Yes

- Diagnose and repair the DTC(s). Testing and Inspection.

No

- Go To 2

2. RUN ACTUATOR CALIBRATION TEST
1. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs.

Does the scan tool display any DTCs?

Yes

- Diagnose and repair the DTC(s). Testing and Inspection.

No

- Go To 3

3. CHECK MODE, BLEND AND RECIRCULATION DOOR OPERATION
1. Start the engine.
2. Set the blower to high speed.
3. Verify that air flows from the correct vents while setting the Mode control to the Panel position, the Bi-level position, the Floor/Defrost position, and the Defrost position. Then, repeat in the opposite direction.
4. Set the Mode control to the Panel position.
5. Set the Driver Blend control to the full cold position.
6. Set the Passenger Blend control the full cold position.
7. Verify that the airflow air temperature changes while setting the Driver Blend control to the full hot position. Then, repeat in the opposite direction.
8. Verify that the airflow air temperature changes while setting the Passenger Blend control to the full hot position. Then, repeat in the opposite direction.
9. Set the Mode control to any position between Floor and Panel.
10. Press the Recirc function on. Verify that the sound of the airflow gets louder as the recirculation door opens to bring in recirculated air.
11. Press the Recirc function off. Verify that the sound of the airflow gets softer as the recirculation door closes to bring in fresh air.

Does each door operate properly?

Yes

- The condition causing the fault has cleared at this time.
- Perform BODY VERIFICATION TEST. Body Verification Test.

No

- Remove the door actuator of the affected door from the A/C Heater Housing Assembly. By hand, attempt to rotate the actuator in both directions. Inspect the A/C Heater Housing for damage, for disconnected, missing, or broken linkage, and for broken or binding doors. Repair as necessary.
- Perform BODY VERIFICATION TEST. Body Verification Test.