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Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock (Except Hybrid) >> DTC/Circuit Diagnosis >> DTC B2401: Ignition Power Supply Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK BCM OUTPUT SIGNAL 
    1. Select IPDM E/R using CONSULT.
    2. Select IGN RLY1-REQ in DATA MONITOR mode.
    3. Check that the function operates normally according to the following conditions.
      Monitor item Condition Status
      IGN RLY1-REQ Ignition switch ON On
      OFF Off

      Is the inspection result normal? 

      YES: Replace automatic back door control module. Refer to "REMOVAL AND INSTALLATION ".

      NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

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