Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1

Turn ignition switch OFF.
Check signal between BCM connector and ground with oscilloscope.

Fig 1: Checking Signal Between BCM Connector And Ground With Oscilloscope

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

TERMINAL CONDITION CHART

Terminals				Condition		Signal (Reference value.)
(+)			(-)
BCM connector		Terminal	(-)
A: M19	Driver side	65	Ground	Request switch is pushed	When Intelligent Key is in the antenna detection area.	Courtesy of NISSAN MOTOR CO., U.S.A.
A: M19	Passenger side	63			When Intelligent Key is in the antenna detection area.	Courtesy of NISSAN MOTOR CO., U.S.A.
B: M21	Rear bumper	119			When Intelligent Key is not in the antenna detection area.	Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: GO TO 4

NO: GO TO 2

CHECK OUTSIDE KEY ANTENNA CIRCUIT

Disconnect BCM and front outside handle connector.

Check continuity between BCM connector and outside key antenna connector.

CONTINUITY CHART

BCM connector	Terminal	Outside key antenna connector	Terminal	Continuity
A: M19	65	C: D6 (driver side)	1	Yes
	64	C: D6 (driver side)	2
	63	C: D106 (passenger side)	1
	62	C: D106 (passenger side)	2
B: M21	119	D: B46 (rear bumper)	1
B: M21	118	D: B46 (rear bumper)	2

Check continuity between BCM connector and ground.

CONTINUITY CHART

BCM connector	Terminal	Ground	Continuity
A: M19	62		No
	63
	64
	65
B: M21	118
	119

Fig 2: Checking Continuity Between BCM Connector And Ground

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

Is the inspection result normal?

YES: GO TO 3

NO: Repair or replace harness between BCM and outside key antenna.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

Replace outside key antenna. (new antenna or other antenna)
Connect BCM and outside key antenna connector.

Check signal between BCM connector and ground with oscilloscope.

Fig 3: Checking Signal Between BCM Connector And Ground With Oscilloscope

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

TERMINALS CONDITION REFERENCE

Terminals				Condition		Signal (Reference value.)
(+)			(-)
BCM connector		Terminal	(-)
A: M19	Driver side	65	Ground	Door request switch is pushed	When Intelligent Key is in the antenna detection area.	Courtesy of NISSAN MOTOR CO., U.S.A.
A: M19	Passenger side	63			When Intelligent Key is in the antenna detection area.	Courtesy of NISSAN MOTOR CO., U.S.A.
B: M21	Rear bumper	119			When Intelligent Key is not in the antenna detection area.	Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: Replace outside key antenna.

NO: GO TO 4

CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

Inspection End.