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Home >> Lexus >> 2010 >> GS 450h >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge (Diagnostics) >> Meter / Gauge System >> On-Vehicle Inspection >> On-Vehicle Inspection

On-Vehicle Inspection

  1. INSPECT SPEEDOMETER 
    1. Inspect the speedometer.
      1. Using a speedometer tester, check that the speedometer reading is within the allowable range shown in the table below. Also, check for proper operation of the odometer.

        Reference

        mph (for U.S.A.) 

        km/h (Except for models for U.S.A.) 

        Standard indication Acceptable range
        20 mph 20 to 23.0 mph
        40 mph 40 to 43.5 mph
        60 mph 60 to 64.0 mph
        80 mph 80 to 84.5 mph
        100 mph 100 to 105.0 mph
        120 mph 120 to 125.5 mph
        140 mph 140 to 146.0 mph
        Standard indication Acceptable range
        20 km/h 17.5 to 21.5 km/h
        40 km/h 38 to 42 km/h
        60 km/h 58 to 63 km/h
        80 km/h 78 to 84 km/h
        100 km/h 98.5 to 104.5 km/h
        120 km/h 119 to 125 km/h
        140 km/h 139 to 146 km/h
        160 km/h 159 to 167 km/h
        180 km/h 179 to 188 km/h
        200 km/h 199 to 209 km/h
        220 km/h 219 to 230 km/h
        240 km/h 239 to 251 km/h
        NOTE:

        Do not use worn, underinflated or overinflated tires, as the speedometer reading will be inaccurate.

      2. Check the deflection width of the speedometer indicator.

        Reference

        Below 0.5 km/h (0.3 mph)

  2. INSPECT FUEL RECEIVER GAUGE 
    1. Disconnect the connector from the sender gauge.
      Fig 1: Identifying Fuel Receiver Gauge Connector Terminals
      GTY135449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the power switch ON (IG), then check the position of the receiver gauge needle.

      OK

      Needle position is on EMPTY

    3. Connect terminals 2 and 3 on the wire harness side connector of the fuel sender gauge.
    4. Turn the power switch ON (IG), then check the position of the receiver gauge needle.

      OK

      Needle position is on FULL

  3. INSPECT FUEL LEVEL WARNING LIGHT 
    1. Disconnect the connector from the sender gauge.
    2. Turn the power switch ON (IG), then check that the fuel level needle indicates EMPTY and the fuel level warning light comes on.

      OK

      Fuel level needle indicates EMPTY and warning light comes on.

  4. INSPECT BRAKE WARNING LIGHT 
    1. Inspect the parking brake warning light.
      1. Disconnect the connector from the parking brake switch.
      2. Turn the power switch ON (IG).
      3. Ground the terminal of the wire harness side connector, then check the parking brake warning light.

        OK

        Warning light comes on.

    2. Inspect the brake fluid level warning light.
      1. Disconnect the connector from the brake fluid level warning switch.
      2. Turn the power switch ON (IG).
      3. Connect a terminal to the other terminal of the wire harness side connector, then check the brake fluid level warning light.

        OK

        Warning light comes on.

  5. INSPECT BRAKE FLUID LEVEL WARNING SWITCH 
    1. Remove the reservoir tank cap and strainer.
    2. Disconnect the connector.
    3. Measure the resistance between the terminals.

      Standard resistance

      Float up (switch off): 10 kΩ or higher

    4. Use a siphon, etc. to take fluid out of the reservoir tank.
    5. Measure the resistance between the terminals.

      Standard resistance

      Float down (switch on): Below 1 Ω

    6. Pour the fluid back in the reservoir tank.
  6. INSPECT WASHER FLUID LEVEL WARNING SWITCH 
    1. Disconnect the connector from the washer level warning switch.
    2. Turn the power switch ON (IG).
    3. Ground the terminal of the wire harness side connector, then check the washer level warning light.

      OK

      Washer level warning light comes on.

  7. INSPECT MULTI-INFORMATION DISPLAY 
    1. Dot display inspection mode

      HINT: 

      • Dot display inspection mode can be exited by turning the power switch from ON (IG) to OFF.
      • Dot display inspection mode can be performed using the Techstream's Active Test. Refer to DATA LIST / ACTIVE TEST .
      1. With the power switch OFF, turn the power switch ON (IG) while pressing the steering pad switch's DISP switch.
      2. All of the multi-display's dots will illuminate.
      3. When all of the dots are illuminated, check that the display is not damaged.
        Fig 2: Identifying Dot Display Area
        GTY108313Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002