Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL

Turn ignition switch OFF.
Disconnect push-button ignition switch connector.

Check voltage between push-button ignition switch harness connector and ground.

TERMINALS VOLTAGE REFERENCE

(+)		(-)	Voltage (V) (Approx.)
Push-button ignition switch
Connector	Terminal
M50	4	Ground	Battery voltage

Is the inspection result normal?

YES: GO TO 3.

NO: GO TO 2.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT

Disconnect BCM connector M122 and IPDM E/R connector.

Check continuity between push-button ignition switch harness connector and BCM harness connector.

TERMINALS CONTINUITY REFERENCE

Push-button ignition switch		BCM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M50	4	M122	89	Existed

Check continuity between push-button ignition switch harness connector and ground.

TERMINALS CONTINUITY REFERENCE

Push-button ignition switch		Ground	Continuity
Connector	Terminal
M50	4		Not existed

Is the inspection result normal?

YES: Replace BCM. Refer to REMOVAL AND INSTALLATION .

NO: Repair or replace harness or connector.

CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT

Check continuity between push-button ignition switch harness connector and ground.

TERMINALS CONTINUITY REFERENCE

Push-button ignition switch		Ground	Continuity
Connector	Terminal
M50	1		Existed

Is the inspection result normal?

YES: GO TO 4.

NO: Repair or replace harness or connector.

CHECK PUSH-BUTTON IGNITION SWITCH
Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES: GO TO 5.

NO: Replace push-button ignition switch. Refer to REMOVAL AND INSTALLATION .
CHECK INTERMITTENT INCIDENT
Refer to INTERMITTENT INCIDENT .

INSPECTION END