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Home >> Lexus >> 2006 >> RX 330 AWD >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control >> Air Suspension System >> Height Control Indicator Light Circuit >> Inspection Procedure

Inspection Procedure

  1. INSPECT COMBINATION METER ASSEMBLY (HEIGHT CONTROL INDICATOR LIGHT) 
    1. Remove the combination meter assembly.
    2. Check indicator light on the combination meter assembly.
      1. Check that the height control indicator light (HI, N, LO) comes on of the combination meter assembly when positive battery voltage is applied to the terminals as shown in the chart below.
        Fig 1: Identifying Combination Meter Assembly Terminal Connector
        G04090238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        BATTERY SPECIFICATION

        Indicator Light Battery Positive Battery Negative
        HI C8-16 C8-12
        N C8-16 C8-11
        LO C8-16 C8-10

        OK: 

        Height control indicator light (HI, N, LO) comes on. 

    NG: REPLACE COMBINATION METER ASSEMBLY 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - COMBINATION METER ASSEMBLY) 
    1. Disconnect the suspension control ECU S16 connector.
    2. Measure the resistance according to the values in the table below.

    Resistance 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Specified Condition
    S16-16 (HI) - C8-12 Below 1 Ω
    S16-17 (NR) - C8-11 Below 1 Ω
    S16-18 (LO) - C8-10 Below 1 Ω
    S16-16 (HI) - Body ground 10 kΩ or higher
    S16-17 (NR) - Body ground 10 kΩ or higher
    S16-18 (LO) - Body ground 10 kΩ or higher
    Fig 2: Identifying Suspension Control ECU Wire Harness Side Connector
    G04090239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE