The Condenser/Radiator Fans Run Always At High Speed (Never At Low Speed) With the A/C on (Without Climate Control)

The condenser/radiator fans run always at high speed (never at low speed) with the A/C on

Diagnostic Procedure:

1. Probable cause: Condenser/radiator fan high speed circuit malfunction

2. Do the Radiator and A/C Condenser Fan High Speed Circuit Troubleshooting Radiator and A/C Condenser Fan High Speed Circuit Troubleshooting

Also check for:

- HVAC DTCs How to Troubleshoot the Heating and A/C Systems
- Powertrain DTCs Initial Inspection and Diagnostic Overview
- Poor or loose connections at the terminals