Possible Causes
| Possible Causes |
|---|
| RECIRCULATION DOOR ACTUATOR DRIVER CIRCUIT DTCS SET |
| (C144) RECIRCULATION DOOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| (C144) RECIRCULATION DOOR SIGNAL CIRCUIT SHORTED TO GROUND |
| (C144) RECIRCULATION DOOR SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT |
| (C34) SIGNAL RETURN CIRCUIT OPEN OR HIGH RESISTANCE |
| (F710) 5V REFERENCE SIGNAL CIRCUIT OPEN/HIGH RESISTANCE |
| (F710) 5V REFERENCE SIGNAL CIRCUIT SHORTED TO GROUND |
| (F710) 5V REFERENCE SIGNAL CIRCUIT |
| RECIRCULATION DOOR STOPS |
| RECIRCULATION DOOR |
| RECIRCULATION DOOR ACTUATOR |
| HVAC MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .