METER / GAUGE SYSTEM Engine Coolant Temperature Receiver Gauge Malfunction

DTC Code DTC Name
Engine Coolant Temperature Receiver Gauge Malfunction

DESCRIPTION

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

WIRING DIAGRAM

E143765E85

CAUTION / NOTICE / HINT

Tip:

If there is an open or short in the engine coolant temperature sensor circuit, the ECM stores DTCs. Troubleshoot the SFI system or ECD system.

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

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 (WATER TEMPERATURE METER 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.

      1. for Multi-information display (Dot LCD type)

        Body Electrical > Combination Meter > Active Test

        Tester Display

        Measurement Item

        Control Range

        Diagnostic Note

        Water Temperature Meter Operation

        Engine coolant temperature receiver gauge

        OFF, Low, Normal, High

        -

        Body Electrical > Combination Meter > Active Test

        Tester Display

        Water Temperature Meter Operation

      2. for Multi-information display (Segment LCD type)

        Body Electrical > Combination Meter > Active Test

        Tester Display

        Measurement Item

        Control Range

        Diagnostic Note

        Water Temperature Meter Operation

        Engine coolant temperature receiver gauge

        OFF, LOW, NORMAL, HIGH

        -

        Body Electrical > Combination Meter > Active Test

        Tester Display

        Water Temperature Meter Operation

    OK

    Engine coolant temperature receiver gauge indication is normal.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    OK

  3. READ VALUE USING GTS (COOLANT TEMPERATURE)

    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

      Coolant Temperature

      Engine coolant temperature

      0 to 127.5°C (0 to 261.5°F)

      1NR-FE, 1ZR-FAE:

      75 to 100 °C (167 to 212°F) (After warming up engine)

      1AD-FTV:

      60 to 90 °C (140 to 194°F) (After warming up engine)

      1ND-TV:

      75 to 90°C (167 to 194°F) (After warming up engine)

      -

      Body Electrical > Combination Meter > Data List

      Tester Display

      Coolant Temperature

      OK

      Engine coolant temperature displayed on the GTS is almost the same as the engine coolant temperature receiver gauge indication.

    Tip:

    • When the Data List values and engine coolant temperature receiver gauge 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 engine coolant temperature receiver gauge 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, ECD system or meter / gauge 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

      Meter / gauge system: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

    DTC B1503 is output.

    D
    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

    D

    GO TO METER / GAUGE SYSTEM

    Click here

    A

  5. READ VALUE USING GTS (COOLANT TEMP, COOLANT TEMPERATURE)

    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

        Coolant Temp

        Coolant temperature

        Min.: -40°C (-40°F), Max.: 140°C (284°F)

        75 to 100°C (167 to 212°F): After warming up

        -

        • Stored as Freeze Frame Data: Yes

        • This is the engine coolant temperature.

        Tip:

        • After warming up the engine, the engine coolant temperature is 75 to 100°C (167 to 212°F).

        • After a long soak, the engine coolant temperature, intake air temperature and ambient temperature are approximately equal.

        • If the value is -40°C (-40°F), or 140°C (284°F), the sensor circuit is open or shorted.

        • Check if the engine overheats when the value indicates 140°C (284°F).

        Powertrain > Engine and ECT > Data List

        Tester Display

        Coolant Temp

      2. Engine and ECT (for Diesel)

        Powertrain > Engine and ECT > Data List

        Tester Display

        Measurement Item

        Type

        Range

        Normal Condition

        Reference Value

        Diagnostic Note

        Coolant Temp

        Engine coolant temperature

        Sensor output (engine coolant temperature sensor)

        Min.: -40°C, Max.: 140°C

        1AD-FTV:

        After warming up engine: 60 to 90°C (140 to 194°F)

        1ND-TV:

        After warming up engine: 75 to 90°C (167 to 194°F)

        1AD-FTV:

        -

        1ND-TV:

        After warming up engine: 75°C (167°F)

        • 1AD-FTV: If the value is -40°C (-40°F) or 140°C (284°F), the sensor circuit is open or shorted.

        • 1ND-TV: If the value is 30°C (-22°F) or less or 120°C (248°F) or more, the sensor circuit is open or shorted.

        • After a long soak, the coolant temperature, intake air temperature and ambient temperature are approximately equal.

        Cause of out of range:

        • Engine coolant temperature sensor

        • Thermostat

        Symptoms when out of range:

        Difficult to start when engine is cold, rough idle, black smoke, lack of power

        Powertrain > Engine and ECT > Data List

        Tester Display

        Coolant Temp

      3. Combination Meter

        Body Electrical > Combination Meter > Data List

        Tester Display

        Measurement Item

        Range

        Normal Condition

        Diagnostic Note

        Coolant Temperature

        Engine coolant temperature

        0 to 127.5°C (0 to 261.5°F)

        1NR-FE, 1ZR-FAE:

        75 to 100 °C (167 to 212°F) (After warming up engine)

        1AD-FTV:

        60 to 90 °C (140 to 194°F) (After warming up engine)

        1ND-TV:

        75 to 90°C (167 to 194°F) (After warming up engine)

        -

        Body Electrical > Combination Meter > Data List

        Tester Display

        Coolant Temperature

    Result

    Result

    Proceed to

    Data List values of the ECUs match.

    A

    Data List values of the ECUs do not 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 engine coolant temperature receiver gauge 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