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Home >> Lexus >> 2021 >> RX 350 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display - Diagnostic Codes >> Meter / Gauge System >> On-Vehicle Inspection [08/2016 - 12/2017] >> Procedure

On-Vehicle Inspection [08/2016 - 12/2017]: 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/EPB / Data List.
      6. Read the Data List according to the display on the Techstream.

        Chassis > ABS/VSC/TRAC/EPB > 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/EPB > Data List 

        Tester Display
        Vehicle Speed
        • for Optitron Meter Type
          REFERENCE MPH (FOR SPEEDOMETER WITH IMPERIAL UNITS MAIN SCALE)

          Techstream Indication (mph) Acceptable Range (mph)
          20 19.3 to 21.8
          40 39.6 to 42.4
          60 60.2 to 63.0
          80 80.5 to 83.7
          100 101.0 to 104.2
          120 121.5 to 124.7
          140 142.0 to 145.2
          REFERENCE KM/H (FOR SPEEDOMETER WITH METRIC UNITS MAIN SCALE)

          Techstream Indication (km/h) Acceptable Range (km/h)
          20 18.5 to 22.5
          40 38.8 to 43.3
          60 59.4 to 63.9
          80 79.6 to 84.6
          100 100.1 to 105.1
          120 120.6 to 125.6
          140 141.1 to 146.1
          160 161.7 to 166.7
          180 182.2 to 187.2
          200 202.7 to 207.7
          220 223.2 to 228.2
          240 243.7 to 248.7

          OK

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

        • for TFT Meter Type
          REFERENCE MPH (FOR SPEEDOMETER WITH IMPERIAL UNITS MAIN SCALE)

          Techstream Indication (mph) Acceptable Range (mph)
          20 19.3 to 21.8
          40 39.6 to 42.4
          60 60.2 to 63.0
          80 80.5 to 83.7
          100 101.0 to 104.2
          120 121.5 to 124.7
          140 142.0 to 145.2
          REFERENCE KM/H (FOR SPEEDOMETER WITH METRIC UNITS MAIN SCALE)

          Techstream Indication (km/h) Acceptable Range (km/h)
          20 18.5 to 22.5
          40 38.8 to 43.3
          60 59.4 to 63.9
          80 79.6 to 84.6
          100 100.1 to 105.1
          120 120.6 to 125.6
          140 141.1 to 146.1
          160 161.7 to 166.7
          180 182.2 to 187.2
          200 202.7 to 207.7
          220 223.2 to 228.2
          240 243.7 to 248.7

          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 Diagnostic Note
        Engine Speed Engine speed Min.: 0 rpm, Max.: 16383 rpm 650 to 750 rpm: Idling (shift lever in N, engine warmed up and A/C off) 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)

        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 / red (malfunction) 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*2
        Eco driving indicator light*1
        Master warning light
        Brake warning light / yellow (minor malfunction)
        Brake hold indicator light
        ICS OFF indicator light*6
        BSM indicator light*3
        SRS warning light Warning light comes on for about 6 seconds after turning the engine switch on (IG).
        AWD lock indicator light*4 Warning light comes on for about 4 seconds after turning the engine switch on (IG).
        Charge warning light*5 Warning light comes on when the engine switch is on (IG).
        MIL (Check engine warning light)
        EPS warning light
        1. *1: w/ Turns on only when the ECO customize setting is set to on.
        2. *2: w/ Pre-collision System
        3. *3: w/ Blind Spot Monitor System
        4. *4: for AWD
        5. *5: for TFT Meter Type
        6. *6: w/ Intelligent Clearance Sonar System