Diesel Data: Automotive Repair

Heating and A/C




The A/C condenser fan and/or the radiator fan do not run with the A/C on

Probable cause: 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

Also check for

HVAC DTCs How to Troubleshoot the Heating and A/C Systems

Also check for

Powertrain DTCs Initial Inspection and Diagnostic Overview

Also check for

Blown fuse No.9 (30 A) in the under-hood fuse/relay box

Also check for

Poor ground at G301

Also check for

Poor or loose connections at the terminals