Inside Key Antenna Check

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

Turn ignition switch OFF.

Check signal between Intelligent Key unit connector and ground with an oscilloscope.

SIGNAL REFERENCE CHART

Connector	Item	Terminals		Condition	Signal (V) (Reference value)
Connector	Item	(+)	(-)	Condition	Signal (V) (Reference value)
M42	Rear parcel shelf antenna	33	Ground	Any door is open → All doors are closed	Courtesy of NISSAN MOTOR CO., U.S.A.
	Front console antenna	15	Ground	Ignition switch is pushed.
	Instrument panel antenna	13	Ground	Ignition switch is pushed.

Fig 1: Checking Signal Between Intelligent Key Unit Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Inside key antenna is OK.

NG: GO TO 2.

CHECK INSIDE KEY ANTENNA

Disconnect Intelligent Key unit connector and inside key antenna connectors.

Check continuity between inside key antenna harness connector M25 (B) (instrument panel), B18 (B) (front console), B45 (B) (rear parcel shelf) terminals 1, 2 and Intelligent Key unit harness connector M42 (A) terminals 13, 14, 15, 16, 33 and 34.

VOLTAGE AND CONTINUITY SPECIFICATIONS

Item	Connector	Terminal	Connector	Terminal	Continuity
Instrument panel antenna	B: M25	2	A: M42	13	Yes
Instrument panel antenna	B: M25	1		14
Front console antenna	B: B18	1		15
Front console antenna	B: B18	2		16
Rear parcel shelf antenna	B: B45	1		33
Rear parcel shelf antenna	B: B45	2		34

Check continuity between Intelligent Key unit harness connector M42 (A) terminals 13, 14, 15, 16, 33, 34 and ground.

VOLTAGE AND CONTINUITY SPECIFICATIONS

Item	Connector	Terminals		Continuity
Intelligent Key unit	A: M42	13	Ground	No
		14
		15
		16
		33
		34

Fig 2: Checking Continuity Between Intelligent Key Unit Harness Connector Terminals And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Repair or replace harness between inside key antenna and Intelligent Key unit.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SINGAL

Replace inside key antenna. (New antenna or other antenna)
Connect Intelligent Key unit connector.

Check signal between Intelligent Key unit connector and ground with oscilloscope.

SIGNAL REFERENCE CHART

Connector	Item	Terminals		Condition	Signal (V) (Reference value)
Connector	Item	(+)	(-)	Condition	Signal (V) (Reference value)
M42	Rear parcel shelf antenna	33	Ground	Any door is open → All doors are closed	Courtesy of NISSAN MOTOR CO., U.S.A.
	Front console antenna	15	Ground	Ignition switch is pushed.
	Instrument panel antenna	13	Ground	Ignition switch is pushed.

Fig 3: Checking Signal Between Intelligent Key Unit Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace inside key antenna.

NG: Replace Intelligent Key unit. Refer to "REMOVAL AND INSTALLATION OF INTELLIGENT KEY UNIT ".