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.
   TERMINAL VOLTAGE REFERENCE CHART
   
   

   ECM				Voltage signal
   +		-
   Connector	Terminal	Connector	Terminal
   F7	9	E16	128	Courtesy of NISSAN MOTOR CO., U.S.A.
   	10
   	11
   	13
   	14
   	15

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

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: Proceed to "DIAGNOSIS PROCEDURE ".