Compressor Clutch: Testing and Inspection

COMPRESSOR CIRCUIT

CIRCUIT DESCRIPTION

The A/C amplifier outputs the A/C switch ON signal from terminal A/CS and the magnetic clutch ON signal from terminal AC 1 to the ECM. Upon receiving these signals, the ECM sends a signal from terminal ACLD to the A/C amplifier, and switches the magnetic clutch relay on, thus turning the magnetic clutch on.

Wiring Diagram:

Step 1 - 2:

Step 3 - 5:

Step 6 - 7:

Step 8:

Step 9 - 10:

INSPECTION PROCEDURE

HINT: When using the hand-held tester, start inspection from step 1 and when not using the hand-held tester, start from step 3.