Suspension Control System Does Not Lower

SUSPENSION CONTROL SYSTEM DOES NOT LOWER





Description
The suspension control system does not lower the vehicle in accordance with ride height changes.




Diagnosis Procedure
1.SUSPENSION CONTROL UNIT POWER AND GROUND INSPECTION
Check the suspension control unit power and ground supply. Suspension Control Unit.
Does the suspension control unit power and ground pass inspection?
YES - GO TO 2.
NO - Repair or replace the malfunctioning part.
2.CHECK HEIGHT SENSOR SIGNAL INPUT
CONSULT-III DATA MONITOR
1. Turn ignition ON.
2. Select "HEIGT SEN" of AIR LEVELIZER data monitor item.
3. Check the monitor status.





Is the height sensor voltage normal?
YES - GO TO 3.
NO - Check height sensor signal circuit. Height Sensor Signal Circuit .
3.EXHAUST VALVE SOLENOID CIRCUIT INSPECTION
Check the exhaust valve solenoid circuit. Exhaust Valve Solenoid Circuit.
Does the exhaust valve solenoid circuit pass inspection?
YES - Inspect for a restriction in the system. repair or replace the malfunctioning part.
NO - Repair or replace the malfunctioning part.