Component Function Check

Turn ignition switch OFF, and restart engine.

Does the engine start? 

YES-1: With CONSULT: GO TO 2.

YES-2: Without CONSULT: GO TO  3.

NO: Proceed to "DIAGNOSIS PROCEDURE ".

WITH CONSULT

1. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT.
2. Check that each circuit produces a momentary engine speed drop.

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: Proceed to "DIAGNOSIS PROCEDURE ".

WITHOUT CONSULT

1. Let engine idle.
2. Read the voltage signal between ECM harness connector terminals under the following conditions with an oscilloscope.

   ECM					Voltage signal
   Cylinder	+		-
   	Connector	Terminal	Connector	Terminal
   1	F110	12	M160	175	Courtesy of NISSAN NORTH AMERICA, INC.
   2		13
   3		14
   4		15
   5		17
   6		18
   7		19
   8		20

   NOTE: The pulse cycle changes depending on rpm at idle.

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: Proceed to "DIAGNOSIS PROCEDURE ".