Pinpoint Test I : The A/C (Air Conditioning) Is Inoperative: Notes
The A/C is Inoperative
Refer to Wiring Diagrams MANUAL CLIMATE CONTROL SYSTEM for schematic and connector information.
Normal Operation and Fault Conditions
Refer to A/C Request. REFER to: Climate Control System - System Operation and Component Description
Possible Sources
- Fuses
- Wiring, terminals or connectors
- A/C system discharged or low refrigerant charge
- Network concerns
- Intake Air Temperature (IAT) / Mass Air Flow (MAF) sensor
- Evaporator temperature sensor
- A/C pressure transducer
- A/C compressor clutch air gap
- A/C compressor
- A/C clutch relay
- HVAC control module
- PCM
Visual Inspection and Diagnostic Pre-checks
- Inspect for loose or corroded PCM and A/C clutch relay connection.
- Make sure BJB fuse 11 (10A) and fuse 38 (7.5A diesel) or fuse 39 (10A gas) are OK.