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Home >> Infiniti >> 2021 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 5) >> Engine (ECM) >> DTC P1092: VVEL Control Shaft Position Sensor >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

  1. 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.

      DTC No.

      VVEL control shaft position sensor

      Ground

      Voltage (V)

      Bank

      Connector

      Terminal

      P1089

      1

      F72

      3

      Ground

      Approx. 5

      6

      P1092

      2

      F70

      3

      6

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

  2. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness for open or short between VVEL control shaft position sensor and VVEL control module
    • Loose or poor connection for each connector and harness

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

  3. 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.

      DTC No.

      VVEL control shaft position sensor

      VVEL control module

      Continuity

      Bank

      Connector

      Terminal

      Connector

      Terminal

      P1089

      1

      F72

      2

      F56

      6

      Existed

      5

      19

      P1092

      2

      F70

      2

      4

      5

      17

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

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    GO TO 4.

  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness for open or short between VVEL control shaft position sensor and VVEL control module
    • Loose or poor connection for each connector and harness

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

  5. 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.

      DTC No.

      VVEL control shaft position sensor

      VVEL control module

      Continuity

      Bank

      Connector

      Terminal

      Connector

      Terminal

      P1089

      1

      F72

      1

      F56

      3

      Existed

      4

      16

      P1092

      2

      F70

      1

      5

      4

      18

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

    Is the inspection result normal?

    YES

    GO TO 7.

    NO

    GO TO 6.

  6. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness for open or short between VVEL control shaft position sensor and VVEL control module
    • Loose or poor connection for each connector and harness

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

  7. CHECK INTERMITTENT INCIDENT 

    Refer to Inspection .

    Is the inspection result normal?

    YES

    GO TO 8.

    NO

    Repair or replace.

  8. REPLACE VVEL CONTROL MODULE 
    1. Replace VVEL control module.
    2. Perform additional service when replacing VVEL control module. Refer to Work Procedure .

    GO TO 9.

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

      Refer to DTC Description .

    Is the DTC P1089 or P1092 displayed again?

    YES

    GO TO 10.

    NO

    INSPECTION END

  10. REPLACE VVEL ACTUATOR LADDER ASSEMBLY 

    Replace VVEL actuator ladder assembly. Refer to CAMSHAFT : Removal & Installation .

    INSPECTION END