Diagnosis Procedure

MAGNET CLUTCH


Diagnosis Procedure

1.PERFORM SELF-DIAGNOSIS
Perform self-diagnosis function. Refer to Diagnosis Description
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.
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 compressor.
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.

6.CHECK ECM INPUT SIGNAL-1
Check A/C switch signal in "Data monitor".



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".
Is the inspection result normal?
YES - GO TO 8.

8.CHECK ECM INPUT SIGNAL-2
Check blower fan motor switch signal in "Data monitor".




Is the inspection result normal?
YES - GO TO 9.
NO - Repair harness or connector.
9.CHECK CAN COMMUNICATION
Check CAN communication. Refer to .
- 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.