Diagnosis Procedure - VK56DE

WARNING: This page is about a different car, the 2012 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 - VK56DE ".

CAUTION: Before testing, perform the following procedure to ensure the engine cannot start.

Remove fuel pump fuse.
Crank or start the engine (where possible) until the fuel pressure is released.

CHECK STARTER MOTOR MAGNETIC SWITCH CIRCUIT

Turn ignition switch OFF.
Disconnect starter motor connector F17.
Shift transmission into park or neutral.

Check voltage between starter motor harness connector F17 terminal 2 and ground with the ignition in START.

(+)		(-)	Condition	Voltage
Connector	Terminal	(-)	Condition	Voltage
F17	2	Ground	While cranking the engine	Battery voltage

Is battery voltage present?

YES: Magnetic switch circuit is OK. Further inspection necessary. Refer to "WORK FLOW ".

NO: GO TO 2

CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check the IPDM E/R harness connector E120 and starter motor harness connector F17 for damage, bent pins and loose connections.
  Is the inspection result normal?
  
  YES: GO TO 3
  
  NO: Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect IPDM E/R connector E120.

Check continuity between starter motor harness connector F17 terminal 2 and IPDM E/R harness connector E120 terminal 19.

Starter motor		IPDM E/R		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F17	2	E120	19	Yes

Check continuity between starter motor harness connector F17 terminal 2 and ground.

Starter motor		-	Continuity
Connector	Terminal	-	Continuity
F17	2	Ground	No

Are the continuity test results as specified?

YES: Further inspection necessary. Refer to "WORK FLOW ".

NO: Repair the harness.