Suspension Air Compressor

POWER SUPPLY AND GROUND CIRCUIT:_:SUSPENSION AIR COMPRESSOR





Diagnosis Procedure
Regarding Wiring Diagram information, [1][2]Electrical Diagrams.
1.CHECK COMPRESSOR MOTOR RELAY OPERATION
CONSULT-III





1. Disconnect the suspension air compressor connector C9.
2. Turn ignition switch ON.
3. Select "COMPRESSOR" under AIR LEVELIZER active test items.
4. While operating the test item, check voltage at the suspension air compressor connector C9 terminal 4.





Is battery voltage present?
YES - GO TO 3.
NO - GO TO 2.
2.COMPRESSOR MOTOR RELAY POWER SUPPLY CIRCUIT CHECK





1. Turn ignition switch OFF.
2. Disconnect the compressor motor relay connector.
3. Check continuity between compressor motor relay connector
E131 (A) terminal 3 and suspension air compressor connector
C9 (B) terminal 4.





4. Check continuity between compressor motor relay connector
E131 (A) terminal 3 and ground.





Are the continuity test results as specified?
YES - Check compressor motor relay. Compressor Motor Relay.
NO - Repair harness or connector.
3.GROUND CIRCUIT CHECK





1. Turn ignition switch OFF.
2. Check continuity between suspension air compressor connector
C9 terminals 1 and 3 and ground.





Is continuity present?
YES - Inspection End.
NO - Repair harness or connector.