The Condenser/Radiator Fans Do Not Run At High Speed, But Do Run At Low Speed

The condenser/radiator fans do not run at high speed, but do run at low speed

Diagnostic Procedure:

1. Probable cause: Malfunction in the fan(s) high speed circuit

2. Do the following troubleshooting as needed:

3. A/C condenser fan high speed circuit troubleshooting Climate Control Power and Ground Circuit Troubleshooting

4. Radiator fan high speed circuit troubleshooting Radiator Fan High Speed Circuit Troubleshooting

Also check for:

- HVAC DTCs Initial Inspection and Diagnostic Overview
- Powertrain DTCs Initial Inspection and Diagnostic Overview
- Blown fuse No. 6 (20 A) and/or No.7 (20 A) in the under-hood fuse/relay box
- Poor ground at G301 Engine Compartment Wire Harness (Left Branch) Connector and Harness Locations
- Poor or loose connections at the terminals