Diagnosis Procedure

EXHAUST VALVE SOLENOID CIRCUIT


Description

Receives exhaust valve solenoid signal from suspension control unit. When activated, the exhaust valve solenoid releases air pressure from the suspension control system.




EXHAUST VALVE SOLENOID CIRCUIT


Diagnosis Procedure

Regarding Wiring Diagram information, Electrical Diagrams.
1.CHECK EXHAUST VALVE SOLENOID SIGNAL
CONSULT-III





1. Connect suspension control unit connector B3.
2. Turn ignition switch ON.
3. Select "EXHAUST SOLENOID" of AIR LEVELIZER active test items.
4. While test item is operating, check signal between suspension air compressor connector C9 terminal 2 and ground.





Is battery voltage present?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK CONTINUITY OF EXHAUST VALVE SOLENOID CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect suspension control unit connector B3 and suspension air compressor connector C9.
3. Check continuity between suspension control unit connector B3
(A) terminal 9 and suspension air compressor connector C9 (B) terminal 2.





4. Check continuity between suspension control unit connector B3
(A) terminal 9 and ground.





Are the continuity test results as specified?
YES - Replace the suspension control unit. Removal and Replacement.
NO - Repair harness or connector.
3.CHECK SUSPENSION AIR COMPRESSOR GROUND





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





Is continuity present?
YES - Replace the suspension air compressor. Service and Repair.
NO - Repair harness or connector.