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Home >> Toyota >> 2021 >> RAV4 LE, AWD >> Repair and Diagnosis >> Electrical >> Gauges >> Meter / Gauge System - Diagnostic Codes (2 Of 2) & Symptom Tests (1 Of 2) >> Meter / Gauge System >> Tachometer Malfunction [11/2018 - 08/2020] >> Procedure

Tachometer Malfunction [11/2018 - 08/2020]: Procedure

  1. READ VALUE USING TECHSTREAM (ENGINE SPEED) 
    1. Using the Techstream, read the Data List.

      Refer to DATA LIST / ACTIVE TEST [11/2018 - 08/2020]

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine RPM Engine speed Min.: 0 rpm, Max.: 12750 rpm Actual engine speed -

      Body Electrical > Combination Meter > Data List 

      Tester Display
      Engine RPM

      HINT: 

      • When the Data List values of the ECUs match, an internal malfunction of the ECM is suspected.
      • When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.

      OK

      The Data List values of the ECUs do not match.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2018 - 10/2022]

    Result: 

    NG 

    See step  2

  2. CHECK FOR DTC (SFI SYSTEM) 
    1. Check if SFI system DTCs are output.

      w/ Canister Pump Module:

      Refer to DTC CHECK / CLEAR [11/2018 - 08/2020]

      w/o Canister Pump Module:

      Refer to DTC CHECK / CLEAR [11/2018 - 08/2020]

      Powertrain > Engine > Trouble Codes 

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO SFI SYSTEM 

    w/ Canister Pump Module:

    Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 10/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 08/2020]

    w/o Canister Pump Module:

    Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 08/2020]

    Result: 

    OK 

    See step  3

  3. READ VALUE USING TECHSTREAM (ENGINE RPM, ENGINE SPEED) 
    1. Using the Techstream, read the Data List.

      Refer to DATA LIST / ACTIVE TEST [11/2018 - 08/2020]

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine RPM Engine speed Min.: 0 rpm, Max.: 12750 rpm Actual engine speed -

      Body Electrical > Combination Meter > Data List 

      Tester Display
      Engine RPM

      Powertrain > Engine > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine Speed Engine speed Min.: 0 rpm, Max.: 16383 rpm Actual engine speed -

      Powertrain > Engine > Data List 

      Tester Display
      Engine Speed

      HINT: 

      • When the Data List values of the ECUs match, an internal malfunction of the ECM is suspected.
      • When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.

      OK

      The Data List values of the ECUs do not match.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2018 - 10/2022]

    Result: 

    NG 

    REPLACE ECM 

    Refer to REMOVAL [11/2018 - 08/2020]