Diesel Data: Automotive Repair

A/C Comp Clutch Doesn't Engage, A/C Cond/Rad Fans Operate, Blower/Heater Controls Work (With Climate Control)




The A/C compressor clutch does not engage, but the A/C condenser/radiator fans operate, and the blower and heater controls work

Diagnostic Procedure:

1. Probable cause: No power to the A/C compressor clutch

2. Do the A/C compressor clutch circuit troubleshooting A/C Compressor Clutch Circuit Troubleshooting

Also check for:

- HVAC DTCs How to Troubleshoot the Climate Control System
- Blown fuses No. 5 (20 A) and No. 3 (MAIN FAN MTR) (30 A) in the under-dash fuse/relay box
- A/C system pressure is normal A/C System Test
- Poor or loose connections at the terminals