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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Control System (DTC/Circuit Diagnosis) (5.6L) (3 Of 6)) >> DTC/Circuit Diagnosis >> DTC P0198: EOT Sensor >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK ENGINE OIL TEMPERATURE SENSOR POWER SUPPLY CIRCUIT 
    1. Disconnect engine oil temperature (EOT) sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between EOT sensor harness connector and ground.

      EOT sensor

      Ground

      Voltage (V)

      Connector

      Terminal

      F56

      1

      Ground

      Approx. 5

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair open circuit, short to ground or short to power in harness or connectors.

  2. CHECK EOT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between EOT sensor harness connector and ECM harness connector.

      EOT sensor

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F56

      2

      F78

      43

      Existed

    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair open circuit, short to ground or short to power in harness or connectors.

  3. CHECK ENGINE OIL TEMPERATURE SENSOR 

    Refer to Component Inspection (Engine Oil Temperature Sensor) .

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace engine oil temperature sensor. Refer to Exploded View .