Check Intelligent Key Warning Buzzer (ENGINE ROOM)

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.

CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key warning buzzer (engine room) connector.
3. Check voltage between Intelligent Key warning buzzer (engine room) harness connector E38 terminal 1 and ground.
  1 (R/Y) - Ground: Battery voltage
OK or NG

OK: GO TO 2.

NG: Repair or replace Intelligent Key warning buzzer (engine room) power supply circuit.

Fig 1: Identifying Voltage Between Intelligent Key Warning Buzzer Connector E38 Terminal 1 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit harness connector M75 terminal 4 and Intelligent Key warning buzzer (engine room) harness connector E38 terminal 3.
  4 (GY) - 3 (GY): Continuity should exist .
3. Check continuity between Intelligent Key warning buzzer (engine room) harness connector E38 terminal 3 and ground.
  3 (GY) - Ground: Continuity should not exist .
  
  Fig 2: Identifying Continuity Between Intelligent Key Warning Buzzer Connector E38 Terminal 3 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 3.

NG: Repair or replace harness between Intelligent Key warning buzzer (engine room) and Intelligent Key unit.
CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) OPERATION
Connect battery power supply to Intelligent Key warning buzzer (engine room) harness connector E38 terminals 1 and 3, and check the operation.

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

OK or NG

OK: Intelligent Key warning buzzer (engine room) is OK.

NG: Replace Intelligent Key warning buzzer (engine room).

Fig 3: Identifying Intelligent Key Warning Buzzer (Engine Room) Operation
Courtesy of NISSAN MOTOR CO., U.S.A.