METER / GAUGE SYSTEM Engine Oil Temperature Gauge Malfunction

DESCRIPTION

In this circuit, the combination meter assembly receives engine coolant temperature signals from the oil temperature sensor via direct line. The combination meter assembly displays the engine coolant temperature that is calculated based on the data received from the oil temperature sensor.

WIRING DIAGRAM

B000V3NE02
*a GAGE
*b Oil Temperature Sensor
*c Combination Meter Assembly

CAUTION / NOTICE / HINT

Note

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  2. READ VALUE USING GTS (COOLANT TEMPERATURE)


    1. Using the GTS, read the Data List.

      Click here


      Body Electrical > Combination Meter > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine Oil Temperature Engine oil temperature Min.: 0°C (32°F),Max.: 255°C (491°F) Engine oil temperature receive rgauge indication: When the indicator is in the center of the gauge: 80 to 105°C(176 to 221°F)When the indicator is in the red zone: 140°C (284°F) or more -

      Body Electrical > Combination Meter > Data List
      Tester Display
      Engine Oil Temperature
      OK
      The Data List values of the ECUs do not match.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

  3. INSPECT OIL TEMPERATURE SENSOR


    1. Remove the oil temperature sensor.

      Click here

    2. Inspect the oil temperature sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE OIL TEMPERATURE SENSOR Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - OIL TEMPERATURE SENSOR AND BODY GOUND)


    1. Disconnect the P25 combination meter assembly connector.

    2. Disconnect the G77 oil temperature sensor connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      P25-24 (GAGE) - G77-1 (OT+) Always Below 1 Ω
      P25-32 (GND) - G77-2 (OT-) Always Below 1 Ω
      P25-31 (ES) - Body ground Always Below 1 Ω
      P25-24 (GAGE) - Other terminals and body ground Always 10 kΩ or higher
      P25-32 (GND) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR