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Home >> Infiniti >> 2010 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC P100A Through P2A03 >> DTC P1089, P1092: VVEL Control Shaft Position Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connections M95, E46. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

  2. VVEL CONTROL SHAFT POSITION SENSOR POWER SUPPLY CIRCUIT
    1. Disconnect VVEL control shaft position sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between VVEL control shaft position sensor harness connector and ground.
      TERMINAL VOLTAGE REFERENCE CHART

      DTC No. VVEL control shaft position sensor Ground Voltage (V)
      Bank Connector Terminal
      P1089 1 F46 3 Ground Approx. 5
      6
      P1092 2 F47 3
      6

      Is the inspection result normal? 

      YES: GO TO  4.

      NO: GO TO 3.

  3. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F1, E3
    • Harness for open or short between VVEL control shaft position sensor and VVEL control module

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

  4. CHECK VVEL CONTROL SHAFT POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect VVEL control module harness connector.
    3. Check the continuity between VVEL control shaft position sensor harness connector and VVEL control module harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      DTC No. VVEL control shaft position sensor VVEL control module Continuity
      Bank Connector Terminal Connector Terminal
      P1089 1 F46 2 E15 4 Existed
      5 17
      P1092 2 F47 2 6
      5 19
    4. Also check harness for short to ground and power.

      Is the inspection result normal? 

      YES: GO TO  6.

      NO: GO TO 5.

  5. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F1, E3
    • Harness for open or short between VVEL control shaft position sensor and VVEL control module

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

  6. VVEL CONTROL SHAFT POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check the continuity between VVEL control shaft position sensor harness connector and VVEL control module harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      DTC No. VVEL control shaft position sensor VVEL control module Continuity
      Bank Connector Terminal Connector Terminal
      P1089 1 F46 1 E15 3 Existed
      4 16
      P1092 2 F47 1 5
      4 18
    2. Also check harness for short to ground and power.

      Is the inspection result normal? 

      YES: GO TO  8.

      NO: GO TO 7.

  7. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors F1, E3
    • Harness for open or short between VVEL control shaft position sensor and VVEL control module

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

  8. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: GO TO 9.

    NO: Repair or replace.

  9. REPLACE VVEL CONTROL MODULE
    1. Replace VVEL control module.
    2. Go to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (VVEL CONTROL MODULE) : SPECIAL REPAIR REQUIREMENT ".

      GO TO 10.

  10. PERFORM DTC CONFIRMATION PROCEDURE
    1. Turn ignition switch ON.
    2. Erase DTC.
    3. Perform DTC Confirmation Procedure.

      See "DTC LOGIC ".

      Is the DTC P1089 or P1092 displayed again? 

      YES: GO TO 11.

      NO: INSPECTION END

  11. REPLACE VVEL ACTUATOR SUB ASSEMBLY
    1. Replace VVEL actuator sub assembly.
    2. Go to "SPECIAL REPAIR REQUIREMENT ".

      INSPECTION END

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