Cube L4-1.8L (MR18DE) (2010)
Compressor Clutch: Testing and Inspection
Automatic Air Conditioner
Component Function Check
MAGNET CLUTCH
Component Function Check
1.CHECK MAGNET CLUTCH OPERATION
Perform auto active test of IPDM E/R. See: Power and Ground Distribution/Power Distribution Module/Testing and Inspection/Scan Tool Testing
and Procedures/Diagnosis Description/With I-Key (WITH I-KEY) or See: Power and Ground Distribution/Power Distribution Module/Testing and
Inspection/Scan Tool Testing and Procedures/Diagnosis Description/Without I-Key (WITHOUT I-KEY).
Does it operate normally?
YES - INSPECTION END
NO - Go to diagnosis procedure. See: Testing and Inspection/Component Tests and General Diagnostics/Automatic Air Conditioner/Magnet
Clutch/Diagnosis Procedure.
Diagnosis Procedure
MAGNET CLUTCH
Description
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The magnet clutch is the device that drives the compressor with the signal from IPDM E/R.
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Compressor is driven by the magnet clutch which is charged magnetic force by electrified.
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IPDM E/R controls magnet clutch by turning the built in A/C relay to ON to OFF according to ECM request.
MAGNET CLUTCH
Diagnosis Procedure
1.CHECK MAGNET CLUTCH
1. Turn the ignition switch OFF.
2. Disconnect the magnet clutch connector.
3. Directly apply the battery voltage to the magnet clutch. Check for operation visually and by sound.
Does it operate normally?
YES - GO TO 2.
NO - Replace the compressor.
2.CHECK MAGNET CLUTCH CIRCUIT CONTINUITY
1. Turn the ignition switch OFF.
2. Disconnect the IPDM E/R connector.
3. Check continuity between magnet clutch harness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair the harnesses and connectors.
3.CHECK FUSE
Check 10A fuse (No. 49, located in the IPDM E/R).
NOTE:
See: Power and Ground Distribution/Power Distribution Module/Diagrams/Connector Views.
Is the inspection result normal?
YES - Replace the IPDM E/R.
NO - Replace the fuse after repairing the applicable circuit.