Compressor HVAC: Testing and Inspection

AIR CONDITIONING: COMPRESSOR: INSPECTION

1. INSPECT MAGNET CLUTCH ASSEMBLY





(a) Inspect the magnet clutch assembly.

(b) Confirm that the magnet clutch hub and magnet clutch rotor lock when the battery positive lead is connected to terminal 1 (MG+) of the magnet clutch, and the negative lead is connected to the earth wire.

If the operation is not as specified, replace the magnet clutch assembly.

2. INSPECT COMPRESSOR PICK UP SENSOR





(a) Check the compressor pick up sensor voltage.

(1) Connect the positive (+) lead from the battery to terminal 3 (SSR-) and the negative (-) lead to terminal 1 (MG+), and measure the voltage between terminals 1 (MG+) and 2 (SSR+).

Standard:

2.0 to 3.0 V

(2) When surface A of the compressor pick up sensor is close to the S-pole, the voltage between terminals 1 (MG+) and 2 (SSR+) increases. When it is close to the N-pole, the voltage between the terminals decreases.

If the result is not as specified, replace the compressor pick up sensor.