Diesel Data: Automotive Repair

Climate Control




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 Climate Control System

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