Diagnostic Test

Turn ignition switch OFF, and restart engine.

Does the engine start?

YES-1 

With CONSULT: GO TO STEP 2  .

YES-2 

Without CONSULT: GO TO STEP 3  .

NO 

Go 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 

Go 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	F111	12	E80	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 

Go to DIAGNOSIS PROCEDURE .