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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Door Lock (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> DTC B2626: Outside Antenna >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1 
    1. Turn Ignition Switch ON.
    2. Check signal between BCM harness connector and ground using oscilloscope.

      (+)

      (-)

      Condition

      Signal

      (Reference value)

      BCM

      Connector

      Terminal

      M123

      80

      81

      Ground

      When the passenger door request switch is operated with Ignition Switch ON

      When Intelligent Key is in the antenna detection area

      (distance between Intelligent Key and antenna: 80 cm or less)
      GNSJMKIA5955GB-955Courtesy of NISSAN NORTH AMERICA, INC.

      When Intelligent Key is not in the antenna detection area

      (distance between Intelligent Key and antenna: Approx. 2 m)
      GNSJMKIA5954GB-954Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES

    Replace BCM. Refer to Removal and Installation .

    NO

    GO TO 2.

  2. CHECK OUTSIDE KEY ANTENNA CIRCUIT 
    1. Turn Ignition Switch OFF.
    2. Disconnect BCM connector and outside key antenna (passenger side) connector.
    3. Check continuity between BCM harness connector and outside key antenna (passenger side) harness connector.

      BCM

      Outside key antenna (passenger side)

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M123

      80

      D44

      1

      Existed

      81

      2
    4. Check continuity between BCM harness connector and ground.

      BCM

      Ground

      Continuity

      Connector

      Terminal

      M123

      80

      Not existed

      81

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace harness.

  3. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2 
    1. Replace outside key antenna (passenger side). (New antenna or other antenna)
    2. Connect BCM connector and outside key antenna (passenger side) connector.
    3. Turn Ignition Switch ON.
    4. Check signal between BCM harness connector and ground using oscilloscope.

      (+)

      (-)

      Condition

      Signal

      (Reference value)

      BCM

      Connector

      Terminal

      M123

      80

      81

      Ground

      When the passenger door request switch is operated with Ignition Switch ON

      When Intelligent Key is in the antenna detection area

      (distance between Intelligent Key and antenna: 80 cm or less)
      GNSJMKIA5955GB-955Courtesy of NISSAN NORTH AMERICA, INC.

      When Intelligent Key is not in the antenna detection area

      (distance between Intelligent Key and antenna: Approx. 2 m)
      GNSJMKIA5954GB-954Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES

    Replace outside key antenna (passenger side).

    NO

    Replace BCM. Refer to Removal and Installation .

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