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Home >> Infiniti >> 2003 >> QX4 RWD >> Repair and Diagnosis >> Transmission >> Transfer Case >> All-Mode 4WD System >> Control System >> Outline

Control System: Outline

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All-mode 4WD transfer is controlled by the transfer control unit and sensors.

If a malfunction occurs in the all-mode 4WD system, the 4WD warning lamp lights up to indicate the system malfunction. There are two ways to identify the cause of the malfunction.

  1. Performing the self-diagnosis. (The 4WD warning lamp will indicate what kind of malfunction has occurred by flickering.)
  2. Performing diagnosis using CONSULT-II.