P1546 CHEVROLET - A/C Clutch Status Circuit Low Voltage
- A/C Clutch Relay harness is open or shorted
- A/C Clutch Relay circuit poor electrical connection
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.