Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 
   1. Turn ignition switch OFF.
   2. Check signal between Intelligent Key unit connector M70 terminals 17, 19, 37 and ground with an oscilloscope.

      Connector	Item	Terminals		Condition	Signal (Reference value)
      		(+)	(-)
      M70	Rear bumper antenna	17	Ground	Request switch is pushed
      	Front outside antenna LH	19
      	Front outside antenna RH	37

      Fig 1: Checking Outside Key Antenna Input Signal Using Oscilloscope

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Outside key antenna is OK.

      NO: GO TO 2

2. CHECK OUTSIDE KEY ANTENNA CIRCUIT 
   1. Disconnect Intelligent Key unit connector and outside key antenna connector.
   2. Check continuity between each outside key antenna harness connector (B) D15 (driver side) or D115 (passenger side), rear bumper antenna connector (C) C7 terminals 1, 2 and Intelligent Key unit harness connector (A) M70 terminals 17, 18, 19, 20, 37, and 38.

      Item	Connector	Terminal	Connector	Terminal	Continuity
      Rear bumper antenna	C: C7	1	A: M70	17	Yes
      		2		18
      Front outside antenna LH	B: D15	1		19
      		2		20
      Front outside antenna RH	B: D115	1		37
      		2		38

   3. Check continuity between each outside key antenna harness connector terminals 1, 2 and ground.

      Item	Connector		Terminal	Continuity
      Rear bumper antenna	C: C7	1	Ground	No
      		2
      Front outside antenna LH	B: D15	1
      		2
      Front outside antenna RH	B: D115	1
      		2

      Fig 2: Checking Outside Key Antenna Circuit

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness between outside key antenna and Intelligent Key unit.

3. CHECK OUTSIDE KEY ANTENNA POWER SUPPLY 
   1. Replace outside key antenna. (New antenna or other antenna)
   2. Connect Intelligent Key unit connector and outside key antenna connector.
   3. Check signal between Intelligent Key unit connector terminals 17, 19, 37 and ground with an oscilloscope.

      Connector	Item	Terminals		Condition	Signal (Reference value)
      		(+)	(-)
      M70	Rear bumper	17	Ground	Request switch is pushed
      	LH side	19
      	RH side	37

      Fig 3: Checking Outside Key Antenna Power Supply

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: Replace outside key antenna.

      NO: Replace Intelligent Key unit. Refer to "REMOVAL AND INSTALLATION ".