P1546 – Air Conditioning Clutch Feedback Circuit Low Voltage

P1546 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1546 Possible Causes

Faulty A/C Clutch Relay,A/C Clutch Relay harness is open or shorted,A/C Clutch Relay circuit poor electrical connection

P1546 Description

The Powertrain Control Module (PCM) will activate the A/C clutch relay when the PCM detects that A/C has been requested. When the PCM activates the relay, the voltage should be present at both the A/C compressor clutch and the A/C clutch status circuit at the PCM.