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Home >> Lexus >> 2015 >> IS 250 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes (1 Of 2) >> Meter / Gauge System >> On-Vehicle Inspection [04/2013 - 08/2015] >> Procedure

On-Vehicle Inspection [04/2013 - 08/2015]: Procedure

  1. INSPECT COMBINATION METER ASSEMBLY 
    1. Check speedometer operation
      NOTE:
      • The combination meter assembly receives the vehicle speed signal from the brake actuator assembly (skid control ECU) via CAN communication. Therefore, perform the following inspection referring to values on the Data List of the brake actuator assembly (skid control ECU) because it is the source of the vehicle speed signal.
      • Data List values of the brake actuator assembly (skid control ECU) are used for this inspection. Therefore, make sure to perform this inspection after confirming that DTCs are not output.
      • 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 this 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 vehicle stability control system DTCs are output.
      2. Check the values by referring to the table below.

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Vehicle Speed Maximum wheel speed sensor reading Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display
        Vehicle Speed
      3. Except F SPORT models
        REFERENCE KM/H

        Techstream Indication (km/h) Acceptable Range (km/h)
        20 18.4 to 22.4
        40 38.6 to 43.1
        60 59.0 to 63.5
        80 79.1 to 84.1
        100 99.4 to 104.4
        120 119.8 to 124.8
        140 140.2 to 145.2
        160 160.6 to 165.6
        180 181.0 to 186.1
        200 201.4 to 206.5
        220 221.8 to 227.0
        240 242.2 to 247.4
        REFERENCE MPH

        Techstream Indication (mph) Acceptable Range (mph)
        20 19.2 to 21.7
        40 39.4 to 42.2
        60 59.8 to 62.6
        80 80 to 83.2
        100 100.3 to 103.5
        120 120.7 to 123.9
        140 141.1 to 144.3
        160 161.5 to 164.7
      4. For F SPORT models
        REFERENCE KM/H

        Techstream Indication (km/h) Acceptable Range (km/h)
        20 18.4 to 22.4
        40 38.6 to 43.1
        60 59.0 to 63.5
        80 79.1 to 84.1
        100 99.4 to 104.4
        120 119.8 to 124.8
        140 140.2 to 145.2
        160 160.6 to 165.6
        180 181.0 to 186.0
        200 201.4 to 206.4
        220 221.8 to 226.8
        240 242.2 to 247.2
        REFERENCE MPH

        Techstream Indication (mph) Acceptable Range (mph)
        20 19.2 to 21.7
        40 39.4 to 42.2
        60 59.8 to 62.6
        80 80 to 83.2
        100 100.3 to 103.5
        120 120.7 to 123.9
        140 141.1 to 144.3
        160 161.5 to 164.7
    2. Inspect tachometer
      1. Connect the Techstream and start the engine.
      2. Compare the test results with the tachometer indication.
        Techstream Indication (rpm) Acceptable Range (rpm)
        Data in () is for Reference
        700 630 to 770
        1000 (900 to 1100)
        2000 (1850 to 2150)
        3000 2800 to 3200
        4000 (3800 to 4200)
        5000 4800 to 5200
        6000 (5750 to 6250)
        7000 6700 to 7300
        8000 (7700 to 8300)
    3. Check LED illumination (LED check)
      1. Check the illumination function of the warning or indicator lights listed below when turning the engine switch on (IG).

        OK

        Warning or Indicator Light Specified Condition
        Brake warning light Warning or indicator light comes on for about 3 seconds after turning the engine switch on (IG).
        VSC OFF indicator light
        Slip indicator light
        ABS warning light
        Tire pressure warning light
        PCS warning light*1
        Headlight leveling warning light
        Eco driving indicator light
        Master warning light
        SRS warning light Warning light comes on for about 6 seconds after turning the engine switch on (IG).
        Charge warning light Warning light comes on when turning the engine switch on (IG).
        MIL (Check engine warning light)
        EPS warning light
        1. *1: w/ Pre-collision System
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