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Home >> Infiniti >> 2016 >> QX70 RWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door & Lock (With Intelligent Key System) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Intelligent Key Warning Buzzer >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE

    1. Turn ignition switch OFF.
    2. Check 10 A fuse, [No. 6, located in fuse block (J/B)].

    Is the fuse blown (open)?

    YES 

    Replace the blown fuse after repairing the affected circuit if a fuse is blown.

    NO 

    GO TO STEP 2  .

  2. CHECK INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT

    1. Disconnect Intelligent Key warning buzzer connector.
    2. Check voltage between Intelligent Key warning buzzer harness connector and ground.
      (+) (-) Voltage (V)
      (Approx.)
      Intelligent Key warning buzzer
      Connector Terminal
      E80 1 Ground Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace harness.

  3. CHECK INTELLIGENT KEY WARNING BUZZER CIRCUIT

    1. Disconnect BCM connector.
    2. Check continuity between BCM harness connector and Intelligent Key warning buzzer harness connector.
      BCM Intelligent Key warning buzzer Continuity
      Connector Terminal Connector Terminal
      M121 64 E80 3 Existed
    3. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M121 64 Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair or replace harness.

  4. CHECK INTELLIGENT KEY WARNING BUZZER

    Check COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace Intelligent Key warning buzzer. Refer to REMOVAL AND INSTALLATION .