Possible Causes
| Possible Causes |
|---|
| 5 VOLT SUPPLY CIRCUIT OPEN |
| 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND |
| BLEND DOOR SIGNAL CIRCUIT SHORTED TO GROUND |
| BLEND DOOR SIGNAL CIRCUIT SHORTED TO THE SENSOR GROUND CIRCUIT |
| BLEND DOOR ACTUATOR |
| A/C HEATER CONTROL |
Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .