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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 >> 4WD Indicator Lamp >> Diagnosis Procedure

Diagnosis Procedure

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  1. CHECK POWER SUPPLY AND GROUND CIRCUIT

    Perform the trouble diagnosis for power supply and ground circuit. Refer to "DIAGNOSIS PROCEDURE ".

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Repair or replace the error-detected parts.

  2. CHECK 4WD WARNING LAMP SIGNAL

    With CONSULT-III 

    1. Start the engine.
      CAUTION: Never drive the vehicle.
    2. Turn the 4WD shift switch AUTO=>4H=>4LO=>4H=>AUTO.
    3. Check "4WD MODE IND" of CONSULT-III "DATA MONITOR" for "ALL MODE AWD/4WD".
      MONITOR ITEM CONDITION

      Monitor item Condition Status
      4WD MODE IND 4WD shift switch: AUTO AUTO
      4WD shift switch: 4H 4H
      4WD shift switch: 4L 4L

      Is the inspection result normal? 

      YES: Check combination meter. Refer to "COMBINATION METER : DIAGNOSIS PROCEDURE ".

      NO: Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".