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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 >> DTC C1808: Integral Time Malfunction Supplying Air >> Diagnosis Procedure

Diagnosis Procedure

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 COMPRESSOR MOTOR RELAY OPERATION 
    CAUTION: The "COMPRESSOR" active test will remain ON until it is turned off using CONSULT. Allowing the compressor to run for an extended period of time may cause damage to the air levelizer system components due to excessive air pressure.

    CONSULT

    1. Turn ignition ON.
    2. Select "COMPRESSOR" of AIR LEVELIZER active test items.
    3. While operating test item, check that the suspension air compressor turns ON.

      ON: Compressor turns ON 

      OFF: Compressor turns OFF 

      Does the suspension air compressor operate properly? 

      YES: Compressor motor relay and suspension air compressor are operating normally.

      NO: Refer to "DIAGNOSIS PROCEDURE ".