INTELLIGENT KEY UNIT : Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM -- INTELLIGENT KEY SYSTEM --

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect Intelligent Key unit connector.

Check voltage between Intelligent Key unit harness connector M70 terminals 6, 11 and ground.

TERMINAL VOLTAGE REFERENCE CHART

Connector	Terminals		Ignition switch position
M70	(+)	(-)	OFF	ON
	6	Ground	0V	Battery voltage
	11	Ground	Battery voltage	Battery voltage

Fig 1: Checking Voltage Between Intelligent Key Unit Harness Connector Terminals 6, 11 And Ground

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

Is the inspection result normal?

YES: GO TO 2

NO: Repair or replace Intelligent Key power supply circuit.

CHECK GROUND CIRCUIT
Check continuity between Intelligent Key unit harness connector M70 terminal 12 and ground.

12 - Ground : Continuity should exist.

Fig 2: Checking Continuity Between Intelligent Key Unit Harness Connector Terminal 12 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: Power supply and ground circuits are OK.

NO: Repair or replace the Intelligent Key unit ground circuit.