Diesel Data: Automotive Repair

The A/C Condenser/Radiator Fans Do Not Run At Low Speed With The A/C On, But The Blower And Heater Controls Work Normally




The A/C condenser/radiator fans do not run at low speed with the A/C on, but the blower and heater controls work normally ('10-12 models)

Probable cause: A/C condenser/radiator fan low speed circuit malfunction

Do the radiator and A/C condenser fan low speed circuit troubleshooting Radiator and A/C Condenser Fan Low Speed Circuit Troubleshooting

Probable cause: A/C pressure sensor circuit malfunction

Do the A/C pressure sensor troubleshooting:

A/C pressure sensor circuit low voltage DTC Troubleshooting

A/C pressure sensor circuit high voltage DTC Troubleshooting

NOTE: The A/C pressure sensor can malfunction without setting a DTC

Also Check for

Climate control DTCs How to Troubleshoot the Climate Control System (With Climate Control)

Also Check for

Powertrain DTCs

Also Check for

Blown fuse No. 3-8 (30 A) in the under-hood fuse/relay box

Also Check for

Poor ground at G302

Also Check for

Poor or loose connections at the terminals