INTELLIGENT KEY UNIT : Diagnosis Procedure

WARNING: This page is about a different car, the 2010 Nissan Pathfinder. 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/ENGINE START FUNCTION - ".

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 CHART

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

Is the inspection result normal?

YES: GO TO 2.

NO: Repair or replace Intelligent Key power supply circuit.

Fig 1: Checking Voltage Between Intelligent Key Unit Harness Connector M70 Terminals 6, 11 And Ground

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

CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between Intelligent Key unit harness connector M70 terminal 12 and ground.
  12 - Ground : Continuity should exist.
  
  Is the inspection result normal?
  
  YES: Power supply and ground circuits are OK.
  
  NO: Repair or replace the Intelligent Key unit ground circuit.
  
  Fig 2: Checking Continuity Between Intelligent Key Unit Harness Connector M70 Terminal 12 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.