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 of "ENGINE" using 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
   F72	46	E77	116	Courtesy of NISSAN NORTH AMERICA, INC.
   	60
   	61
   	62
   	65
   	79
   	80
   	81

   Fig 1: Checking Ignition Signal Function

   Courtesy of NISSAN NORTH AMERICA, INC.
   NOTE: The pulse cycle changes depending on rpm at idle.

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: Proceed to "DIAGNOSIS PROCEDURE ".