Posts Tagged: clutch relay

Honda AC compressor clutch won’t engage: Common causes

Learn what to check when your Honda AC compressor clutch won’t  engage When you encounter a Honda AC compressor clutch that won’t engage, the problem could be 1) a low refrigerant charge, 2) a failed AC compressor thermal protector, or 3) a faulty AC clutch relay. Where to start your diagnostics 1) Check AC pressure: The low side pressure must be high enough to over-ride the low-pressure cut-off switch, which is usually calibrated to prevent clutch engagement if pressure is below 35 psi. 2) Check continuity on the AC thermal … Read More