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Home >> Lexus >> 2005 >> LS 430 >> Repair and Diagnosis >> Electrical >> Gauges >> Combination Meter - Diagnostics >> Malfunction In ODO/Trip SW >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF HAND-HELD TESTER 
    1. Operate the hand-held tester according to the steps on the display and select the "DATA LIST".

    METER: 

    DATA LIST REFERENCE

    Item Measurement Item/ Range (Display) Normal Condition Diagnostic Note
    ODO/TRIP SW ODO/TRIP switch is ON / OFF ON: Switch is pushed
    OFF: Switch is released
    -
    TRIP RESET SW TRIP RESET switch is ON / OFF ON: Switch is pushed
    OFF: Switch is released
    -

    OK: 

    Switch condition (ON/OFF) can be switched by actual operation. 

    NG: Go to step 2 

    OK: REPLACE COMBINATION METER ASSY (SEE  OVERHAUL  ) 

  2. INSPECT TRIP SWITCH 
    1. Disconnect the trip switch connector.
    2. Measure the resistance according to the value (s) in the table below.

    Standard 

    TRIP SWITCH CONNECTOR RESISTANCE SPECIFICATIONS

    Terminal No Condition Specified condition
    T10-1 - T10-2 ODO/TRIP switch OFF --> ON 10 kΩ or higher --> Below 1 Ω
    T10-3 - T10-2 RESET switch OFF --> ON 10 kΩ or higher --> Below 1 Ω

    NG: REPLACE TRIP SWITCH 

    Fig 1: Identifying Trip Switch Connector Terminals
    G03000718Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO NEXT STEP 

  3. CHECK HARNESS AND CONNECTOR (TRIP SWITCH - COMBINATION METER ASSY) (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    1. Disconnect the C12 and T10 connectors.
    2. Measure the resistance according to the value (s) in the table below.

    Standard 

    C12 AND T10 CONNECTORS RESISTANCE SPECIFICATIONS

    Tester Connection Condition Specified Condition
    C12-7 - T10-1 Always Below 1 Ω
    C12-8 - T10-3 Always Below 1 Ω
    C12-10 - T10-2 Always Below 1 Ω
    C12-7 - Body ground Always 10 kΩ or higher
    C12-8 - Body ground Always 10 kΩ or higher
    C12-10 - Body ground Always 10 kΩ or higher
    Fig 2: Identifying C12 And T10 Connector Terminals
    G03000719Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE COMBINATION METER ASSY (SEE  OVERHAUL  )