Control Module HVAC: Testing and Inspection
A/C Switch1. Remove the climate control unit.
2. Inspect for continuity between the A/C switch terminals using an ohmmeter.
3. Connect battery positive voltage to terminal C and ground to the terminal A.
4. Turn the A/C switch on.
5. Verify that the LED illuminates.
- If not as specified, replace the A/C switch.
Fan Switch
1. Remove the climate control unit.
2. Inspect for continuity between the fan switch terminals using an ohmmeter.
- If not as specified, replace the fan and rear window defroster switch.