Possible Causes
| Possible Causes |
|---|
| REFERENCE VOLTAGE SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE |
| REFERENCE VOLTAGE SUPPLY CIRCUIT SHORTED TO GROUND |
| LEFT BLEND DOOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| LEFT BLEND DOOR SIGNAL CIRCUIT SHORTED TO GROUND |
| LEFT BLEND DOOR SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT |
| LEFT BLEND DOOR ACTUATOR |
| HVAC MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .