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 with an oscilloscope.

   ECM				Voltage signal
   +		-
   Connector	Terminal	Connector	Terminal
   F13(1) F90(2)	86	E10(1) E31(2)	128	Courtesy of NISSAN NORTH AMERICA, INC.
   	87
   	90
   	91
   (1) Except for California (2) For California

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

   Is the inspection result normal? 

   YES >> INSPECTION END

   NO >> Proceed to "DIAGNOSIS PROCEDURE ".