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METER / GAUGE SYSTEM Tachometer Malfunction

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DTC Code DTC Name
  Tachometer Malfunction
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DESCRIPTION

In this circuit, the combination meter assembly receives engine speed signals from the ECM via the CAN communication system. The combination meter assembly displays the engine speed calculated based on the data received from the ECM.

Table 1. *1 Combination Meter Assembly *2 CAN Communication Line
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • When replacing the combination meter assembly, make sure to replace it with a new one.

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.

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PROCEDURE


  1. Click here

    CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


    1. Check for DTCs.

      for LHD without Central Gateway ECU:Click here

      for RHD without Central Gateway ECU:Click here

      for LHD with Central Gateway ECU:Click here

      for RHD with Central Gateway ECU:Click here

      OK
      No DTCs are output.
      Result
      Result Proceed to
      OK (for Diesel Engine) A
      OK (for Gasoline Engine) B
      NG C

    • AClick here
    • BClick here
    • C

      GO TO CAN COMMUNICATION SYSTEM for LHD without Central Gateway ECU:Click here

      GO TO CAN COMMUNICATION SYSTEM for RHD without Central Gateway ECU:Click here

      GO TO CAN COMMUNICATION SYSTEM for LHD with Central Gateway ECU:Click here

      GO TO CAN COMMUNICATION SYSTEM for RHD with Central Gateway ECU:Click here

  2. Click here

    CHECK FOR DTC (ECD SYSTEM)


    1. Check for DTCs.

      for 1GD-FTV:Click here

      for 1GD-FTV, w/ DPF:Click here

      for 1GD-FTV, w/oEGR System:Click here

      for 1GD-FTV, w/o EGR Cooler:Click here

      for 2GD-FTV:Click here

      for 2GD-FTV, w/ DPF:Click here

      for 2GD-FTV, w/ Urea SCR System:Click here

      for 2GD-FTV, w/o EGR System:Click here

      for 2GD-FTV, w/o EGR Cooler:Click here

      for 2KD-FTV:Click here

      for 5L-E:Click here


      1. Powertrain > Engine > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

  3. Click here

    PERFORM ACTIVE TEST USING GTS (TACHOMETER OPERATION)


    1. Using the GTS, perform the Active Test.

      Click here


      1. Body Electrical > Combination Meter > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        TachoMeter Operation Tachometer

        • for 1TR-FE:

          OFF, 0, 1000, 2000, 3000, 4000, 5000, 6000 or 7000 (rpm)

        • for 2TR-FE, 1GR-FE:

          OFF, 0, 1000, 2000, 3000, 4000, 5000 or 6000 (rpm)

        • for Diesel Engine:

          OFF, 0, 1000, 2000, 3000, 4000 or 5000 (rpm)

        		 -



      1. Body Electrical > Combination Meter > Active Test
        Tester Display
        TachoMeter Operation




      OK
      Tachometer indication is normal.
      Result
      Proceed to
      OK
      NG

  4. Click here

    READ VALUE USING GTS (ENGINE SPEED, ENGINE RPM)


    1. Using the GTS, read the Data List.

      Click here


      1. Powertrain > Engine > Data List
        Tester Display Measurement Item Normal Condition Reference Value Diagnostic Note
        Engine Speed Engine speed Min.: 0 rpm, Max.: 16383.75 rpm Actual engine speed -



      1. 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 -



      1. Powertrain > Engine > Data List
        Tester Display
        Engine Speed





      1. Body Electrical > Combination Meter > Data List
        Tester Display
        Engine Rpm




      Tip:

      • 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

  5. Click here

    CHECK COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly with a new one.

      Click here

    2. Check that the operation of the tachometer returns to normal.

      OK
      The operation of the tachometer returns to normal.
      Result
      Proceed to
      OK
      NG

  6. Click here

    CHECK FOR DTC (SFI SYSTEM)


    1. Check for DTCs.

      for 1TR-FE:Click here

      for 2TR-FE:Click here

      for 1GR-FE:Click here


      1. Powertrain > Engine > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG