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Home >> Lexus >> 2017 >> GX 460 Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display System (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> Speedometer Malfunction [08/2019 - ] >> Procedure

Speedometer Malfunction [08/2019 - ]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if a CAN communication DTC is output.

      Refer to DIAGNOSIS SYSTEM [08/2019 - 08/2020] , or refer to DIAGNOSIS SYSTEM [08/2020 - 08/2021] , or refer to DIAGNOSIS SYSTEM [08/2021 - ]

      Result

      Result Proceed to
      CAN communication DTC is not output A
      CAN communication DTC is output B

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

    Result: 

    See step  2

  2. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM) 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2019 - ]

      Result

      Result Proceed to
      Vehicle stability control system DTCs are not output. A
      Vehicle stability control system DTC is output. B

    Result: 

    GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ] 

    Result: 

    See step  3

  3. PERFORM ACTIVE TEST USING TECHSTREAM (SPEED METER OPERATION) 
    1. Perform the Active Test according to the display on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [08/2019 - ]

      BODY ELECTRICAL > COMBINATION METER > ACTIVE TEST

      Tester Display Measurement Item Control Range Diagnostic Note
      Speed Meter Operation Speedometer for km/h: 
      • OFF, 0, 40, 80, 120, 160, 200 (km/h)

      for mph: 
      • OFF, 0, 40, 80, 120 (mph)
      There is a deviation in the values displayed on the speedometer display (Control range → Speedometer)
      for km/h: 
      • 40 → 38.9 to 43.4
      • 80 → 79.6 to 84.6
      • 120 → 120.7 to 125.7
      • 160 → 161.7 to 166.7

      for mph: 
      • 40 → 39.7 to 42.5
      • 80 → 80.5 to 83.7
      • 120 → 121.8 to 124.8

      OK

      Speedometer indication is normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU). Refer to  DISASSEMBLY [08/2015 - ] 

    Result: 

    NG 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [08/2019 - ]