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Home >> Lexus >> 2012 >> IS F >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display (Diagnostics) >> Meter / Gauge System >> On-Vehicle Inspection >> On-Vehicle Inspection

On-Vehicle Inspection

  1. INSPECT SPEEDOMETER 
    1. Check the operation.
      NOTE:
      • The meter CPU receives the vehicle speed signal from the skid control ECU via a direct line. Therefore, perform the following inspection referring to values on the Data List of the skid control ECU because it is the source of the vehicle speed signal.
      • The Data List values of the skid control ECU are used for this inspection. Therefore, make sure to perform the inspection after confirming that no DTCs are output from the brake control system.
      • If the tire size or tire inflation pressure is not within the specified range, or the tires are excessively worn, the speedometer indication error will increase. Therefore, make sure to perform the inspection after checking that the tire size, tire inflation pressure and tire wear are in the specified range.
      1. Before starting the following inspection, check if the Brake Control System outputs the DTCs.
      2. Check the values by referring to the table below.
        ABS/VSC/TRAC

        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        Vehicle Speed Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Almost same as actual vehicle speed (When driving) -
        REFERENCE: MPH (FOR U.S.A.)

        Techstream Indication (mph) Acceptable Range for Speedometer (mph) Acceptable Range for Speedometer LCD (mph)
        20 20.0 to 23.0 19.5 to 22.0
        40 40.0 to 43.5 39.9 to 42.7
        60 60.0 to 64.0 60.6 to 63.4
        80 80.0 to 84.5 81.1 to 84.3
        100 100.0 to 105.0 101.7 to 104.9
        120 120.0 to 125.5 122.4 to 125.6
        140 140.0 to 146.0 143.1 to 146.3
        160 160.0 to 166.5 163.7 to 166.9
        REFERENCE: KM/H (FOR CANADA)

        Techstream Indication (km/h) Acceptable Range for Speedometer (km/h)
        Data in () is for reference
        Acceptable Range for Speedometer LCD (km/h)
        20 (17.5 to 21.5) 18.7 to 22.7
        40 38.0 to 42.0 39.1 to 43.6
        60 58.0 to 63.0 59.8 to 64.3
        80 78.0 to 84.0 80.2 to 89.2
        100 98.5 to 104.5 100.8 to 105.8
        120 119.0 to 125.0 121.5 to 126.5
        140 139.0 to 146.0 142.2 to 147.2
        160 159.0 to 167.0 162.8 to 167.8
        180 179.0 to 188.0 183.5 to 188.5
        200 199.0 to 209.0 204.2 to 209.2
        220 219.0 to 230.0 224.8 to 229.8
        240 239.0 to 251.0 245.5 to 250.5
        260 259.0 to 272.0 266.2 to 271.2
        280 279.0 to 293.0 286.8 to 291.8
        REFERENCE: KM/H (FOR KOREA)

        Techstream Indication (km/h) Acceptable Range for Speedometer (km/h)
        Data in () is for reference
        Acceptable Range for Speedometer LCD (km/h)
        20 (21.0 to 25.0) 21.0 to 25.0
        40 41.7 to 46.2 42.0 to 46.0
        60 62.7 to 67.2 63.0 to 67.0
        80 83.4 to 88.4 84.0 to 88.0
        100 104.3 to 109.3 104.0 to 109.0
        120 125.1 to 130.6 125.0 to 130.0
        140 145.8 to 151.8 146.0 to 151.0
        160 166.2 to 173.2 167.0 to 173.0
        180 186.9 to 194.5 187.0 to 194.0
        200 207.7 to 215.7 208.0 to 215.0
        220 228.4 to 236.8 229.0 to 236.0
        240 249.2 to 258.0 249.0 to 257.0
        260 269.9 to 279.2 270.0 to 278.0
        280 290.6 to 300.4 291.0 to 299.0
        NOTE:

        Tire wear as well as over or under inflation will cause errors.

        HINT: 

        If the indication is not as specified, go to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

  2. INSPECT TACHOMETER 
    1. Connect the Techstream, and start the engine.
    2. Compare the test results with the tachometer indications.
      DC 13.5 V, AT 25°C (77°F)

      Techstream Indication (rpm) Acceptable Range (rpm)
      Data in () is for reference
      700 630 to 770
      1, 000 (900 to 1, 100)
      2, 000 (1, 850 to 2, 150)
      3, 000 2, 800 to 3, 200
      4, 000 (3, 829 to 4, 229)
      5, 000 4, 859 to 5, 259
      6, 000 (5, 838 to 6, 338)
      7, 000 6, 800 to 7, 400
      8, 000 (7, 800 to 8, 400)

      HINT: 

      If the indication is not as specified, go to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

  3. INSPECT MULTI-INFORMATION DISPLAY 
    1. Turn the engine switch off.
      Fig 1: Identifying Multi-Information Display
      GTY356173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Press the "DISP" switch and hold it down.
    3. Turn the engine switch on (IG).

      OK

      All the dots in the multi-information display come on.

      HINT: 

      This test is also available on DATA LIST/ACTIVE TEST. Refer to DATA LIST / ACTIVE TEST .

    4. Turn the engine switch off to finish this test mode.

      HINT: 

      If the result is not as specified, replace the combination meter. Refer to REMOVAL - Step 9 .