Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The Signal Tech II Tool [- (J-50190)] can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.

Check Intelligent Key relative signal strength.
Confirm vehicle Intelligent Key antenna signal strength.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1

Turn ignition switch OFF.

Check signal between BCM harness connector and ground using oscilloscope.

(+)		(-)	Condition		Signal (Reference value)
BCM
Connector	Terminal
M80	114, 115	Ground	When the passenger door request switch is operated with ignition switch OFF	When Intelligent Key is in the antenna detection area (The distance between Intelligent Key and antenna: 80 cm or less)	Courtesy of NISSAN NORTH AMERICA, INC.
				When Intelligent Key is not in the antenna detection area (The distance between Intelligent Key and antenna: Approx. 2 m)	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

GO TO 2.

CHECK OUTSIDE KEY ANTENNA CIRCUIT

Disconnect BCM connector and outside key antenna (passenger side) connector.

Check continuity between BCM harness connector and outside key antenna (passenger side) harness connector.

BCM		Outside key antenna (passenger side)		Continuity
Connector	Terminal	Connector	Terminal
M80	114	D118	1	Yes
	115		2

Check continuity between BCM harness connector and ground.

BCM		Ground	Continuity
Connector	Terminal
M80	114		No
	115

Is the inspection result normal?

YES

GO TO 3.

Repair or replace harness.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

Replace outside key antenna (passenger side). (New antenna or other antenna)
Connect BCM connector and outside key antenna (passenger side) connector.

Check signal between BCM harness connector and ground using oscilloscope.

(+)		(-)	Condition		Signal (Reference value)
BCM
Connector	Terminal
M80	114, 115	Ground	When the passenger door request switch is operated with ignition switch OFF	When Intelligent Key is in the antenna detection area (The distance between Intelligent Key and antenna: 80 cm or less)	Courtesy of NISSAN NORTH AMERICA, INC.
				When Intelligent Key is not in the antenna detection area (The distance between Intelligent Key and antenna: Approx. 2 m)	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

Replace outside key antenna (passenger side). Refer to Removal and Installation .

Replace BCM. Refer to Removal and Installation .