Hello guys
My Vitz ECC Compressor makes lil grinding/bearing noise in Idling RPM only (800RPM). The noise vanishes as soon as the Engine speeds up but it comes back again if i release the throttle. Mostly it comes when the compartment Temp is near the set Temp.
Cooling is perfect,
"Electronic Climate Control (ECC) A/C is equipped with ECC compressor unlike Magnetic Clutch type. ECC Compressor can vary its cooling power by changing the pressure on squash plate via oil controlled valve PWM signal etc"