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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 P181C: Transfer Motor Power Supply >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK TRANSFER MOTOR POWER SUPPLY (2)

    Check the voltage between transfer control unit harness connector and ground.

    VOLTAGE SPECIFICATION

    + - Voltage
    Transfer control unit
    Connector Terminal
    E60 41 46 Battery voltage

    Is the inspection result normal? 

    YES: GO TO  3.

    NO: GO TO 2.

  2. CHECK TRANSFER MOTOR POWER SUPPLY CIRCUIT (2)
    1. Turn the ignition switch OFF.
    2. Check the 30A fusible link (J).
    3. Check the harness for open or short between transfer control unit harness connector No. 1 terminal and 30A fusible link (J).

      Is the inspection result normal? 

      YES: Perform the trouble diagnosis for power supply circuit. Refer to "WIRING DIAGRAM - BATTERY POWER SUPPLY - ".

      NO: Repair or replace error-detected parts.

  3. 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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