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Home >> Infiniti >> 2011 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Transfer Case (ATX90A)) >> DTC/Circuit Diagnosis >> DTC P182A: Transfer Hi-Lo Position Sensor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK TRANSFER HI-LO POSITION SENSOR SIGNAL
    1. Turn the ignition switch ON.
      CAUTION: Never start the engine.
    2. Check the voltage between transfer control unit harness connector and ground.
      VOLTAGE SPECIFICATION

      + - Condition Voltage
      Transfer control unit
      Connector Terminal
      E59 6 Ground 4WD mode: AUTO or 4H Approx. 0 V
      4WD mode: 4L Approx. 5 V
      25 4WD mode: AUTO or 4H Approx. 0 V
      4WD mode: 4L Approx. 5 V
      CAUTION: After operating 4WD shift switch, move the vehicle back and forth to check voltage.

      Is the inspection result normal? 

      YES: GO TO  5.

      NO: GO TO 2.

  2. CHECK TRANSFER HI-LO POSITION SENSOR POWER SUPPLY
    1. Turn the ignition switch OFF.
    2. Disconnect transfer Hi-Lo position sensor harness connector.
    3. Turn the ignition switch ON.
      CAUTION: Never start the engine.
    4. Check the voltage between transfer Hi-Lo position sensor harness connector terminals.
      VOLTAGE SPECIFICATION

      + - Voltage
      Transfer Hi-Lo position sensor
      Connector Terminal
      F42 1 Ground Approx. 5 V
      2

      Is the inspection result normal? 

      YES: GO TO  4.

      NO: GO TO 3.

  3. CHECK TRANSFER HI-LO POSITION SENSOR CIRCUIT
    1. Turn the ignition switch OFF.
    2. Disconnect transfer control unit harness connector.
    3. Check the continuity between transfer control unit harness connector and transfer Hi-Lo position sensor harness connector.
      CONTINUITY SPECIFICATION

      Transfer control unit Transfer Hi-Lo position sensor Continuity
      Connector Terminal Connector Terminal
      E59 6 F42 1 Existed
      25 2
      29 3
    4. Check the continuity between transfer Hi-Lo position sensor harness connector and ground.
      CONTINUITY SPECIFICATION

      Transfer Hi-Lo position sensor - Continuity
      Connector Terminal
      F42 1 Ground Not existed
      2
      3

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair or replace error-detected parts.

  4. REPLACE TRANSFER HI-LO POSITION SENSOR
    1. Replace transfer Hi-Lo position sensor. Refer to "EXPLODED VIEW ".
    2. Perform confirmation procedure again. Refer to "DTC LOGIC ".

      Is DTC "P182A" detected? 

      YES: GO TO 5.

      NO: INSPECTION END

  5. CHECK TERMINALS AND HARNESS CONNECTORS

    Check the pin terminals for damage or loose connection with each harness connector.

    Is the inspection result normal? 

    YES: Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace error-detected parts.

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