Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. 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

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

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

Turn ignition switch OFF.

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

Connector	Item	Terminals		Condition	Signal (V) (Reference value)
Connector	Item	(+)	(-)	Condition	Signal (V) (Reference value)
M70	Intelligent Key unit	33	Ground	Ignition switch is pushed.

Fig 1: Checking Inside Key Antenna Power Supply Signal

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Overhead console area antenna is OK.

NO: GO TO 2

CHECK INSIDE KEY ANTENNA

Disconnect Intelligent Key unit connector and overhead console area antenna connectors.

Check continuity between Intelligent Key unit harness connector (A) M70 terminals 33, 34 and overhead console area antenna harness connector (B) R210 terminals 1, 2.

Intelligent Key unit connector	Terminals	Overhead console area antenna connector	Terminals	Continuity
A: M70	33	B: R210	1	Yes
A: M70	34	B: R210	2	Yes

Check continuity between Intelligent Key unit harness connector (A) M70 terminals 33, 34 and ground.

Item	Connector	Terminals		Continuity
Intelligent Key unit	A: M70	33	Ground	No
Intelligent Key unit	A: M70	34	Ground	No

Fig 2: Checking Inside Key Antenna

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: GO TO 3

NO: Repair or replace harness between Intelligent Key unit and overhead console area antenna.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

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.

Connector	Item	Terminals		Condition	Signal (V) (Reference value)
Connector	Item	(+)	(-)	Condition	Signal (V) (Reference value)
M70	Intelligent Key unit	33	Ground	Ignition switch is pushed.

Fig 3: Check Inside Key Antenna Power Supply Signal

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Replace overhead console area antenna.

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