Troubleshooting Hints

1. If the Heater and A/C Control Assembly is completely inoperative, check for poor connections at Heater and A/C Control Assembly connector C1.
2. Check for missing or damaged connector seals at the Blower Motor Resistor and Blower Motor High Speed Relay.
3. Check HTR-A/C Fuse if the Blower Motor is inoperative. If open, check for short to ground through CKT 50.