B105B-RECIRCULATION DOOR CONTROL CIRCUIT OPEN (ATC)
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
When actuator movement is requested.
- Set Condition:
If the (C268) Recirculation Door Driver circuit or the (C68) Recirculation Door Common Driver circuit is open.
| Possible Causes |
| (C268) RECIRCULATION DOOR DRIVER CIRCUIT OPEN |
| (C68) RECIRCULATION DOOR COMMON DRIVER CIRCUIT OPEN |
| RECIRCULATION DOOR ACTUATOR |
| A/C HEATER CONTROL |
Diagnostic Test
1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCsTurn the ignition on.
With the scan tool, read active HVAC DTCs.
Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE DTCs?
Yes
- Diagnose and repair the DTC(s). Refer to the Table of Contents in this Section for a complete list of HVAC related symptoms.
No
- Go To 2
2. CHECK THE RECIRCULATION DOOR ACTUATOR CIRCUIT RESISTANCE
Turn the ignition off.
Disconnect the A/C Heater Control C2 harness connector.
Measure the resistance between the (C268) Recirculation Door Driver circuit and the (C68) Recirculation Door Common Driver circuit in the A/C Heater Control C2 harness connector.
Is the resistance above 70.0 ohms?
Yes
- Go To 3
No
- Replace the A/C Heater Control in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
3. CHECK THE (C268) RECIRCULATION DOOR DRIVER CIRCUIT FOR AN OPEN
Disconnect the Recirculation Door Actuator harness connector.
Measure the resistance of the (C268) Recirculation Door Driver circuit between the Recirculation Door Actuator harness connector and the A/C Heater Control C2 harness connector.
Is the resistance below 5.0 ohms?
Yes
- Go To 4
No
- Repair the (C268) Recirculation Door Driver circuit for an open.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
4. CHECK THE (C68) RECIRCULATION DOOR COMMON DRIVER CIRCUIT FOR AN OPEN
Measure the resistance of the (C68) Recirculation Door Common Driver circuit between the Recirculation Door Actuator harness connector and the A/C Heater Control C2 harness connector.
Is the resistance below 5.0 ohms?
Yes
- Replace the Recirculation Door Actuator in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Repair the (C68) Recirculation Door Common Driver circuit for an open.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).