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Home >> Lexus >> 2022 >> RC F Fuji Speedway Edition >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes (1 Of 2) >> Meter / Gauge System >> On-Vehicle Inspection [09/2014 - 11/2017] >> Procedure

On-Vehicle Inspection [09/2014 - 11/2017]: 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. Warm up the engine.
      2. Connect the Techstream to the DLC3.
      3. Turn the engine switch on (IG).
      4. Turn the Techstream on.
      5. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
      6. Read the Data List according to the display on the Techstream.

        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
        • for Gauge speedometer
          REFERENCE MPH

          Techstream Indication (mph) Acceptable Range (mph)
          20 19.5 to 22.0
          40 40.0 to 42.8
          60 60.7 to 64.4
          80 81.2 to 84.4
          100 101.9 to 105.1
          120 122.6 to 125.8
          140 143.3 to 146.5
          160 164.0 to 167.2
          180 184.7 to 187.9
          200 205.5 to 208.7
          REFERENCE KM/H

          Techstream Indication (km/h) Acceptable Range (km/h)
          20 18.7 to 22.7
          40 39.2 to 43.7
          60 59.9 to 64.4
          80 80.3 to 85.3
          100 101.0 to 106.0
          120 121.7 to 126.7
          140 142.4 to 147.4
          160 163.1 to 168.1
          180 183.8 to 188.8
          200 204.8 to 209.6
          220 225.3 to 230.3
          240 246.0 to 251.0
          260 266.7 to 271.7
          280 287.4 to 292.4
          300 308.1 to 313.1
          320 328.8 to 333.8
        • for Digital speedometer
          REFERENCE MPH

          Techstream Indication (mph) Acceptable Range (mph)
          20 20 to 22
          40 40 to 43
          60 61 to 64
          80 81 to 84
          100 102 to 105
          120 123 to 126
          140 143 to 147
          160 164 to 167
          180 185 to 188
          200 206 to 209
          REFERENCE KM/H

          Techstream Indication (km/h) Acceptable Range (km/h)
          20 19 to 23
          40 39 to 44
          60 60 to 64
          80 80 to 85
          100 101 to 106
          120 122 to 127
          140 142 to 147
          160 163 to 168
          180 184 to 189
          200 205 to 210
          220 225 to 230
          240 246 to 251
          260 267 to 272
          280 287 to 292
          300 308 to 313
          320 329 to 334

        OK

        Speedometer reading is within the acceptable range at each vehicle speed.

    2. Inspect tachometer
      1. Warm up the engine.
      2. Connect the Techstream to the DLC3.
      3. Turn the engine switch on (IG).
      4. Turn the Techstream on.
      5. Enter the following menus: Powertrain / Engine / Data List.
      6. Read the Data List according to the display on the Techstream.

        Powertrain > Engine > Data List 

        Tester Display Measurement Item Range Normal Condition Reference Value Diagnostic Note
        Engine Speed Engine speed Min.: 0 RPM, Max.: 16383 RPM 700 to 800 RPM: Idling with warm engine Idling (engine warmed up and A/C off): 763 RPM When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 RPM or varies greatly from the actual engine speed.

        Powertrain > Engine > Data List 

        Tester Display
        Engine Speed
        REFERENCE

        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

        OK

        Tachometer reading is within the acceptable range at each engine speed.

    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*
        Headlight leveling warning light
        Master warning light
        TRAC OFF indicator 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 the engine switch is on (IG).
        MIL (Check engine warning light)
        EPS warning light
        1. *: w/ Pre-collision System
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