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Home >> Nissan-Datsun >> 2012 >> 370Z Base, 2D Convertible, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1087 Through P2A03 >> DTC P2765: Input Speed Sensor >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection M95. Refer to Ground Inspection in CIRCUIT INSPECTION .

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

  2. CHECK INPUT SPEED SENSOR POWER SUPPLY CIRCUIT
    1. Disconnect input speed sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between input speed sensor harness connector and ground.
      Input speed sensor Ground Voltage (V)
      Connector Terminal
      F58 1 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO  4.

      NO: GO TO 3.

  3. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F103, M116
    • Harness for open or short between input speed sensor and IPDM E/R

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

  4. CHECK INPUT SPEED SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between input speed sensor harness connector and ECM harness connector.
      Input speed sensor ECM Continuity
      Connector Terminal Connector Terminal
      F58 2 F102 84 Existed
    4. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 5.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

  5. CHECK INPUT SPEED SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check the continuity between input speed sensor harness connector and ECM harness connector.
      Input speed sensor ECM Continuity
      Connector Terminal Connector Terminal
      F58 3 F102 75 Existed
    2. Also check harness for short to ground and short to power.

      Is the inspection result normal? 

      YES: GO TO 6.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

  6. CHECK INPUT SPEED SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace input speed sensor.

  7. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END

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