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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Body Control System (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC B259A: Room Lamp Fuse >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK FUSE

    Check that the following fuse is not blown.

    Terminal No. Signal name Fuse No.
    131 BCM battery fuse 1 (10A)

    Is the fuse or fusible link blown?

    YES 

    Replace the blown fuse after repairing the affected circuit.

    NO 

    GO TO STEP 2  .

  2. CHECK BAT BCM FUSE CIRCUIT

    1. Disconnect BCM connector M81.
    2. Check voltage between BCM connector M81 terminal 131 and ground.
      BCM Ground Voltage
      (Approx.)
      Connector Terminal
      M81 131 - Battery voltage

    Is the inspection result normal?

    YES 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness or connectors. GO TO 3. 

  3. CHECK BATTERY SAVER OUTPUT CIRCUIT FOR SHORT TO GROUND

    1. Turn ignition OFF.
    2. Check continuity between BCM connector M81 terminal 129 and ground.
      BCM Ground Continuity
      Connector Terminal
      M81 129 - No

    Is the inspection result normal?

    YES 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness or connectors.