LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2021 >> 4Runner TRD Pro >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes & Symptom Tests >> Meter / Gauge System >> Speedometer Malfunction [08/2015 - ] >> Procedure

Speedometer Malfunction [08/2015 - ]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if a CAN communication DTC is output. (Refer to DIAGNOSIS SYSTEM [08/2015 - 08/2019] , or refer to DIAGNOSIS SYSTEM [08/2019 - 08/2021] , or refer to DIAGNOSIS SYSTEM [08/2021 - 08/2022] , or refer to DIAGNOSIS SYSTEM [08/2022 - ] ).
      RESULT

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

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] )

    Result: 

    A 

    See step  2

  2. PERFORM ACTIVE TEST USING TECHSTREAM (SPEED METER OPERATION) 
    1. Use the Active Test to check the operation of the speedometer. (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] , or refer to DATA LIST / ACTIVE TEST [08/2019 - 08/2021] , or refer to DATA LIST / ACTIVE TEST [08/2021 - ] ).
      COMBINATION METER

      Tester Display Test Part Control Range Diagnostic Note
      Speed Meter Operation Speedometer 0, 40, 80, 120, 160, 200 mph*1 Acceptable range (mph): [Control range → Speedometer display]
      • 40 → 40 to 43.5
      • 80 → 80 to 84.5

      Confirm that the vehicle is stopped with the engine idling.
      0, 40, 80, 120, 160, 200 km/h*2 Acceptable range (km/h): [Control range → Speedometer display]
      • 40 → 38 to 42
      • 80 → 78 to 84
      • 120 → 119 to 125
      • 160 → 159 to 167

      Confirm that the vehicle is stopped with the engine idling.
      1. *1: for U.S.A.
      2. *2: except U.S.A.

      OK

      Speedometer indication is normal.

      RESULT

      Result Proceed to
      OK A
      NG (for 4WD) B
      NG (for 2WD) C

    Result: 

    B 

    REPLACE MASTER CYLINDER SOLENOID 

    (Refer to REMOVAL [08/2015 - 08/2022] , or refer to REMOVAL [08/2022 - ] )

    Result: 

    C 

    SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    (Refer to REMOVAL [08/2015 - 08/2019] , or refer to REMOVAL [08/2019 - ] )

    Result: 

    A 

    See step  3

  3. READ VALUE USING TECHSTREAM (VEHICLE SPEED METER) 
    1. Use the Data List to check if the speedometer is operating properly. (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] , or refer to DATA LIST / ACTIVE TEST [08/2019 - 08/2021] , or refer to DATA LIST / ACTIVE TEST [08/2021 - ] ).
      COMBINATION METER

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Meter Vehicle speed/Min.: 0 mph (0 km/h), Max.: 255 km/h (158 mph) Almost the same as actual vehicle speed measured using a speedometer tester -

      OK

      Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

      RESULT

      Result Proceed to
      NG A
      OK (for 4WD) B
      OK (for 2WD) C

    Result: 

    B 

    REPLACE MASTER CYLINDER SOLENOID 

    (Refer to REMOVAL [08/2015 - 08/2022] , or refer to REMOVAL [08/2022 - ] )

    Result: 

    C 

    SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    (Refer to REMOVAL [08/2015 - 08/2019] , or refer to REMOVAL [08/2019 - ] )

    Result: 

    A 

    See step  4

  4. READ VALUE USING TECHSTREAM (VEHICLE SPEED) 
    1. Use the Data List to check the vehicle speed. (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] , or refer to DATA LIST / ACTIVE TEST [08/2019 - 08/2021] , or refer to DATA LIST / ACTIVE TEST [08/2021 - ] ).
      ABS/VSC/TRAC

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Vehicle speed/Min.: 0 mph (0 km/h), Max.: 326 km/h (202 mph) Actual vehicle speed No large fluctuations when driving at a constant speed.

      OK

      Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

      RESULT

      Result Proceed to
      OK A
      NG (for 4WD) B
      NG (for 2WD) C

    Result: 

    B 

    GO TO VEHICLE STABILITY CONTROL SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] )

    Result: 

    C 

    GO TO VEHICLE STABILITY CONTROL SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] )

    Result: 

    A 

    See step  5

  5. REPLACE COMBINATION METER ASSEMBLY 
    1. Replace the combination meter assembly with a new or normally functioning one. (Refer to REMOVAL [08/2015 - 08/2022] , or refer to REMOVAL [08/2022 - ] ).

      OK

      The operation of the speedometer returns to normal.

      RESULT

      Result Proceed to
      OK A
      NG (for 4WD) B
      NG (for 2WD) C

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE MASTER CYLINDER SOLENOID 

    (Refer to REMOVAL [08/2015 - 08/2022] , or refer to REMOVAL [08/2022 - ] )

    Result: 

    C 

    SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    (Refer to REMOVAL [08/2015 - 08/2019] , or refer to REMOVAL [08/2019 - ] )