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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 915 (Suspension Control System) >> DTC/Circuit Diagnosis >> Exhaust Valve Solenoid Circuit >> Component Function Check

Component Function Check

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK EXHAUST SOLENOID OPERATION 
    CAUTION: While operating this active test, the suspension control system will vent air pressure and the vehicle ride height will lower. Ensure the area around the vehicle is free from obstructions before beginning test.

    CONSULT

    1. Ensure the suspension control system has air pressure and is not drooping in the rear.
    2. Select "EXHAUST SOLENOID" of AIR LEVELIZER active test items.
    3. While operating test item, check that the exhaust valve solenoid opens to vent air from the system. The vehicle should lower when the exhaust valve solenoid is activated.

      ON: Air vents and vehicle ride height lowers 

      OFF: No air vents and vehicle ride height remains constant 

      Does the system vent properly? 

      YES: Exhaust valve solenoid is operating normally.

      NO: Refer to "DIAGNOSIS PROCEDURE ".