Troubleshooting Hints - Air Delivery & Temperature Controls

^ Try the following checks before doing the System Check.

1. If the Steering Wheel Controls do not operate the Radio or the Heater And A/C Controls, refer to Steering Wheel Controls, for diagnosis. Steering

2. Check for vacuum at the PPL vacuum hose from the vacuum source entering the HVAC Programmer.

^ Go to the A/C System Check for a guide to normal operation. Refer to System Diagnosis if other results occur. [1][2]Component Tests and General Diagnostics Testing and Inspection