Blower And Heater Controls And The A/C System Do Not Work

The blower and heater controls and the A/C system do not work

Diagnostic Procedure:

1. Probable cause: Climate control unit malfunction

2. Do the climate control power and ground circuit troubleshooting Climate Control Power and Ground Circuit Troubleshooting

Also check for:

- HVAC DTCs Initial Inspection and Diagnostic Overview
- Blown fuse No. 36 (10 A) in the driver's under-dash fuse/relay box
- Poor ground at G504 Dashboard Wire Harness (View From Middle) Connector And Harness Locations
- Poor or loose connections at the terminals