Magnetic Clutch

MAGNET CLUTCH





Description
Magnet clutch drives a compressor, by a signal of IPDM E/R.




Component Function Check
1.CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK
1. Press AUTO switch.
2. Display should indicate AUTO. Confirm that the magnet clutch engages (sound or visual inspection). (Discharge air and fan speed depend on ambient, in-vehicle and set temperatures.)
Does the magnet clutch operate?
YES - INSPECTION END
NO - Go to Diagnosis Procedure. SEE Diagnosis Procedure.




Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
Perform self-diagnosis function. Diagnosis Description Without Plasmacluster System.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.PERFORM IPDM E/R AUTO ACTIVE TEST
Perform IPDM E/R auto active test. Diagnosis Description.
Does the magnet clutch operate?
YES-1 - WITH CONSULT-III: GO TO 6.
YES-2 - WITHOUT CONSULT-III: GO TO 5.
NO - Check 10A fuse (No. 49, located in IPDM E/R), and GO TO 3.
3.CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and compressor connector.
3. Check continuity between IPDM E/R harness connector and compressor harness connector.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair harness or connector.
4.CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct current to terminal.
Is the inspection result normal?
YES - Replace IPDM E/R.
NO - Replace magnet clutch. Service and Repair.
5.CHECK REFRIGERANT PRESSURE SENSOR (WITHOUT CONSULT-III)
1. Start the engine.
2. Check voltage between ECM harness connector and ground.





Is the inspection result normal?
YES - Repair harness or connector.
NO - Testing and Inspection.
6.CHECK ECM INPUT SIGNAL-1
Check A/C switch signal in "Data monitor". Reference Value.





Is the inspection result normal?
YES - GO TO 9.
NO - GO TO 7.
7.CHECK REFRIGERANT PRESSURE SENSOR (WITH CONSULT-III)
1. Start the engine.
2. Check voltage of refrigerant pressure sensor in "Data monitor". Reference Value.
Is the inspection result normal?
YES - GO TO 8.
NO - Testing and Inspection.
8.CHECK ECM INPUT SIGNAL-2
Check blower fan motor switch signal in "Data monitor". Reference Value.





Is the inspection result normal?
YES - GO TO 9.
NO - Repair harness or connector.
9.CHECK CAN COMMUNICATION
Check CAN communication. Trouble Diagnosis Flow Chart.
- ECM � IPDM E/R
- ECM � Unified meter and A/C amp.
Is the inspection result normal?
YES - Replace ECM.
NO - Repair or replace malfunctioning part.