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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different car >> Section 324 (Meter / Gauge System (12.3 Inch) - Diagnostic Codes, Symptom Tests & Circuit Tests) >> METER / GAUGE SYSTEM (for 12.3 Inch Display) >> Speedometer Malfunction [11/2022 - ] >> Procedure

Speedometer Malfunction [11/2022 - ]: Procedure

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  1. CHECK TIRES 
    1. Check the tire size, tire wear and tire pressures are normal.

      Refer to INSTALLATION [09/2022 - ]

      HINT: 

      Factors that affect the indicated vehicle speed include the tire size, tire wear and tire pressures.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TIRE OR ADJUST TIRE PRESSURERE 

    Result: 

    OK 

    See step  2

  2. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication DTCs are output.

      Refer to DIAGNOSIS SYSTEM [11/2022 - 03/2023] , or refer to DIAGNOSIS SYSTEM [03/2023 - 08/2023] , or refer to DIAGNOSIS SYSTEM [08/2023 - 09/2024] , or refer to DIAGNOSIS SYSTEM [09/2024 - ]

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2022 - 08/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2023 - 09/2024] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2024 - ]

    Result: 

    A 

    See step  3

  3. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check if electronically controlled brake system DTCs are output.

      Chassis > Brake/EPB > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2022 - ]

    Result: 

    A 

    See step  4

  4. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      for Speedometer Unit km/h Type A
      for Speedometer Unit MPH Type B

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  5

  5. PERFORM ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Speed Signal Input (0) Vehicle speed test signal input ON When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      Speed Signal Input (40) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (80) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (120) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (160) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (200) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (240) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (280) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • When the value of the Active Test is more than or equal to the speedometer upper limit, the indicated speed stops at the upper limit.
      1. *: For the tolerance of speedometer, refer to Operation Check.

        Refer to OPERATION CHECK [09/2022 - ]

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (0)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (40)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (80)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (120)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (160)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (200)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (240)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (280)

      Result

      Result Proceed to
      Active Test can be performed correctly A
      Active Test cannot be performed correctly B

    Result: 

    A 

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    B 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

  6. PERFORM ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Speed Signal Input (0) Vehicle speed test signal input ON When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      Speed Signal Input (40) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (80) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (120) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.*
      Speed Signal Input (160) Vehicle speed test signal input ON
      • When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test.
      • The value displayed on the speedometer may deviate.
      1. *: For the tolerance of speedometer, refer to Operation Check.

        Refer to OPERATION CHECK [09/2022 - ]

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (0)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (40)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (80)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (120)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Speed Signal Input (160)

      Result

      Result Proceed to
      Active Test can be performed correctly A
      Active Test cannot be performed correctly B

    Result: 

    A 

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    B 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

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