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Home >> Lexus >> 2005 >> ES 330 >> Repair and Diagnosis >> Electrical >> Gauges >> Combination Meter - Diagnostics >> Multi-Information Display Screen Does Not Change When Steering Pad Switch Is Operated >> Inspection Procedure

Inspection Procedure

  1. CHECK COMBINATION METER ASSY 
    1. Check voltage.
      1. Remove the combination meter assy with connector still connected.
      2. Turn the ignition switch to ON.
      3. Measure voltage between terminal C8-18 of combination meter assy connector and body ground.
        Fig 1: Identifying Combination Meter Assy Connector Terminal C8-18
        G02938766Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard voltage: 

        CONDITION VOLTAGE

        Condition Voltage (V)
        MODE switch is pressed 0
        MODE switch is not pressed 5
        RESET switch is pressed 2.5
        RESET switch is not pressed 5

      OK: CHECK AND REPLACE COMBINATION METER ASSY 

      NG: Go To Next Step 

    2. INSPECT STEERING PAD SWITCH 
      1. Remove the steering pad switch.
      2. Check resistance between terminals +DP and EAU of steering pad switch connector.
      1. Resistance: 
        Fig 2: Identifying Steering Pad Switch Connector Terminal EAU
        G02938767Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SWITCH CONDITION-RESISTANCE

      Switch condition Resistance (Ω)
      MODE switch is pressed Below 1
      MODE switch is not pressed OPEN
      RESET switch is pressed 2.2
      RESET switch is not pressed OPEN

      NG: REPLACE STEERING PAD SWITCH 

      OK: Go To Next Step 

      REPAIR OR REPLACE HARNESS OR CONNECTOR 

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