The A/C Condenser/Radiator Fans Do Not Run At High Speed, But Do Run At Low Speed (With Climate Control)

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

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

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

Do the following troubleshooting as needed:

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

A/C condenser fan high speed circuit troubleshooting A/C Condenser Fan High Speed Circuit Troubleshooting

Probable cause: A/C pressure sensor circuit malfunction

Do the pressure sensor troubleshooting:

A/C pressure sensor circuit low voltage M/T

A/C pressure sensor circuit high voltage M/T

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 fuses No. 5 (20 A) and No. 3-6 (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