Improper Air Delivery or No Mode Shift Diagnosis

Improper Air Delivery or No Mode Shift Diagnosis

This procedure provides a test of all functions of the heater/defroster unit.
1. Warm up the vehicle.
2. Keep the engine running.




3. Perform the tests outlined in the table and look for the results indicated.

If any of these settings does not produce the correct results, perform the following diagnostic procedure.

Step 1 - 10:

Step 10 (Continued) - 18:

Troubleshooting