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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1748 (Body, Lock & Security System (Sedan)) >> Intelligent Key System >> Check Intelligent Key Warning Buzzer (Instrument Panel)
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Check Intelligent Key Warning Buzzer (Instrument Panel)

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK INTELLIGENT KEY WARNING BUZZER (INSTRUMENT PANEL) POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key warning buzzer (instrument panel) connector.
    3. Check voltage between Intelligent Key warning buzzer (instrument panel) harness connector M21 terminal 1 and ground.

      1 (R/W) - Ground : Battery voltage 

      Fig 1: Identifying Voltage Between Intelligent Key Warning Buzzer Connector M21 Terminal 1 And Ground
      G04122442Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: GO TO 2.
    • NG: Repair or replace Intelligent Key warning buzzer (instrument panel) power supply circuit.
  2. CHECK INTELLIGENT KEY WARNING BUZZER (INSTRUMENT PANEL) CIRCUIT 
    1. Disconnect Intelligent Key unit connector.
    2. Check continuity between Intelligent Key unit harness connector M75 terminal 30 and Intelligent Key warning buzzer (instrument panel) harness connector M21 terminal 3.

      30 (LG/B) - 3 (LG/B) : Continuity should exist. 

    3. Check continuity between Intelligent Key unit harness connector M75 terminal 30 and ground.

      30 (LG/B) - Ground : Continuity should not exist. 

      Fig 2: Identifying Continuity Between Intelligent Key Unit Harness Connector M75 Terminal 30 And Ground
      G04122443Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: GO TO 3.
    • NG: Repair or replace harness between Intelligent Key warning buzzer (instrument panel) and Intelligent Key unit.
  3. CHECK INTELLIGENT KEY WARNING BUZZER (INSTRUMENT PANEL) OPERATION 

    Connect battery power supply to Intelligent Key warning buzzer (instrument panel) harness connector M21 terminals 1 and 3, and check the operation.

    1 (BAT+) - 3 (BAT-) : the buzzer sounds 

    Fig 3: Connecting Battery Power Supply To Intelligent Key Warning Buzzer Connector M21 Terminals 1 And 3
    G04122444Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: Intelligent Key warning buzzer (instrument panel) is OK.
    • NG: Replace Intelligent Key warning buzzer (instrument panel).
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