Power Supply and Ground Circuit Check

WARNING: This page is about a different car, the 2007 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect Intelligent Key unit connector.

Check voltage between Intelligent Key unit harness connector M42 terminals 6, 11 and ground.

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Connector	Terminals		Ignition switch position
M42	(+)	(-)	OFF	ON
	6	Ground	0V	Battery voltage
	11	Ground	Battery voltage	Battery voltage

OK or NG

OK: GO TO 2.

NG: Repair or replace Intelligent Key power supply circuit.

Fig 1: Checking Voltage Between Intelligent Key Unit Harness Connector M42 Terminals 6, 11 And Ground

CHECK GROUND CIRCUIT
Check continuity between Intelligent Key unit harness connector M42 terminal 12 and ground.

12 - Ground : Continuity should exist.

OK or NG

OK: Power supply and ground circuits are OK.

NG: Repair or replace the Intelligent Key unit ground circuit.

Fig 2: Checking Continuity Between Intelligent Key Unit Harness Connector M42 Terminal 12 And Ground