METER / GAUGE SYSTEM Tachometer Malfunction

DTC Code DTC Name
Tachometer Malfunction

DESCRIPTION

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

WIRING DIAGRAM

E143765E85

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    1. Check if CAN communication DTCs are output.

      Click here

      Result

      Result

      Proceed to

      CAN communication DTCs are not output.

      A

      CAN communication DTCs are output.

      B
    B

    GO TO CAN COMMUNICATION SYSTEM

    Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (TACHOMETER OPERATION)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Combination Meter / Active Test.

    5. Check the operation by referring to the table below.

      Body Electrical > Combination Meter > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      TachoMeter Operation

      Tachometer

      OFF, 0, 1000, 2000, 3000, 4000, 5000, 6000*, 7000*

      -

      • *: for Gasoline

      Body Electrical > Combination Meter > Active Test

      Tester Display

      TachoMeter Operation

      OK

      Tachometer indication is normal.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    OK

  3. READ VALUE USING GTS (ENGINE RPM)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Combination Meter / Data List.

    5. Check the values by referring to the table below.

      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

      1NR-FE:

      600 to 700 rpm (Idling)

      1ZR-FAE:

      • 600 to 700 rpm (Idling (for CVT))

      • 580 to 680 rpm (Idling (for Multi-mode manual transaxle))

      1AD-FTV:

      • 720 to 820 rpm (Idling)

      1ND-TV:

      • 720 to 820 rpm (Idling)

      -

      Body Electrical > Combination Meter > Data List

      Tester Display

      Engine Rpm

      OK

      Engine speed displayed on the GTS is almost the same as the tachometer indication.

      Tip:

      • When the Data List values and tachometer values match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.

      • When the Data List values and tachometer values do not match, an internal malfunction of the combination meter assembly is suspected.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    OK

  4. CHECK FOR DTC

    1. Check if SFI system or ECD system DTCs are output.

      SFI system for 1NR-FE:Click here

      SFI system for 1ZR-FAE:Click here

      ECD system for 1ND-TV:Click here

      ECD system for 1AD-FTV:Click here

    Result

    Result

    Proceed to

    DTCs are not output.

    A

    DTCs are output (for SFI system).

    B

    DTCs are output (for ECD system).

    C
    B

    GO TO SFI SYSTEM

    for 1NR-FE:Click here

    for 1ZR-FAE:Click here

    C

    GO TO ECD SYSTEM

    for 1ND-TV:Click here

    for 1AD-FTV:Click here

    A

  5. READ VALUE USING GTS (ENGINE SPEED, ENGINE RPM)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus:

      1. for Engine and ECT: Powertrain / Engine and ECT / Data List.

      2. for Combination Meter: Body Electrical / Combination Meter / Data List.

    5. Check the values by referring to the table below.

      1. Engine and ECT (for Gasoline)

        Powertrain > Engine and ECT > Data List

        Tester Display

        Measurement Item

        Range

        Normal Condition

        Reference Value

        Diagnostic Note

        Engine Speed

        Engine speed

        Min.: 0 rpm, Max.: 16383 rpm

        1NR-FE:

        600 to 700 rpm (Idling)

        1ZR-FAE:

        • 600 to 700 rpm (Idling (for CVT))

        • 580 to 680 rpm: Idling (for Manual transaxle)

        1NR-FE:

        -

        1ZR-FAE:

        666 rpm (Idling (engine warmed up and A/C off))

        • Stored as Freeze Frame Data: Yes

        • When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 rpm or varies greatly from the actual engine speed.

        Powertrain > Engine and ECT > Data List

        Tester Display

        Engine Speed

      2. Engine and ECT (for Diesel)

        Powertrain > Engine and ECT > Data List

        Tester Display

        Measurement Item

        Type

        Range

        Normal Condition

        Reference Value

        Diagnostic Note

        Engine Speed

        Engine speed

        Sensor output (crankshaft position sensor)

        Min.: 0 rpm, Max.: 16383 rpm

        1AD-FTV:

        • 50 to 400 rpm (Cranking)

        • 720 to 820 rpm (Idling with warm engine)

        1ND-TV:

        720 to 820 rpm (Idling)

        1AD-FTV:

        -

        1ND-TV:

        770 rpm (Idling ("Coolant Temp" = 75°C (167°F)))

        When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 or varies greatly from the actual engine speed.

        Cause of out of range:

        • Crankshaft position sensor

        • Crankshaft position sensor circuit

        Powertrain > Engine and ECT > Data List

        Tester Display

        Engine Speed

      3. Combination Meter

        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

        1NR-FE:

        600 to 700 rpm: Idling

        1ZR-FAE:

        • 600 to 700 rpm: Idling (for CVT)

        • manual transaxle)

        1AD-FTV:

        • 720 to 820 rpm: Idling

        1ND-TV:

        • 720 to 820 rpm: Idling

        -

        Body Electrical > Combination Meter > Data List

        Tester Display

        Engine Rpm

    Result

    Result

    Proceed to

    The data list values of the ECUs do not match.

    A

    The data list values of the ECUs match

    B
    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.

    B

    REPLACE ECM

    for 1NR-FE:Click here

    for 1ZR-FAE:Click here

    for 1ND-TV:Click here

    for 1AD-FTV:Click here

    A

  6. REPLACE COMBINATION METER ASSEMBLY

    1. Replace the combination meter assembly with a new or known good one.

      Click here

      OK

      The operation of the tachometer returns to normal.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

    REPLACE ECM

    for 1NR-FE:Click here

    for 1ZR-FAE:Click here

    for 1ND-TV:Click here

    for 1AD-FTV:Click here