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

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.

Do the following troubleshooting as needed:

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

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

Probable cause: A/C pressure sensor circuit malfunction.

Do the A/C pressure sensor troubleshooting:

A/C pressure sensor circuit low voltage A/T

A/C pressure sensor circuit high voltage A/T

NOTE: The A/C pressure sensor can malfunction without setting a DTC

Also Check for

Climate control DTCs

Also Check for

Powertrain DTCs

Also Check for

Blown fuse No. 5 (20 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