Check Inside Key Antenna

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INSIDE KEY ANTENNA POWER SUPPLY CIRCUIT
Push ignition knob and use an oscilloscope to check voltage waveform between Intelligent Key unit connector M34 terminals 13 (luggage room), 15 (dash board), 35 (dash board) and ground.

Fig 1: Connector Terminal Reference Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Inside Key Antenna Power Supply Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK : GO TO 2.
2. NG : GO TO 3.
CHECK INSIDE KEY ANTENNA OPERATION
1. Disconnect inside key antenna connector.
2. Check continuity between inside key antenna connector M70, M153 (dash board), B68 (luggage room) terminals 1 and 2.
  1. 1 - 2 : Continuity should exist.
OK or NG
1. OK : GO TO 3.
2. NG : Replace malfunctioning inside key antenna.
Fig 3: Checking Continuity Between Inside Key Antenna Connector M70, M153 (Dash Board), B68 (Luggage Room) Terminals 1 And 2
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector.
2. Check continuity between inside key antenna connector M70, M153 (dash board), B68 (luggage room) terminals 1, 2 and Intelligent Key unit connector terminals 13, 14, 15, 16, 35 and 36.
  
  Fig 4: Terminal Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Checking Inside Key Antenna
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between inside key antenna connector M70, M153 (dash board), B68 (luggage room) terminals 1 and 2 and ground.
  
  Fig 6: Terminal Reference Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Replace Intelligent Key unit.
2. NG : Repair or replace harness between inside key antenna and Intelligent Key unit.