Component Function Check

Turn ignition switch OFF, and restart engine.

Does the engine start?

YES

With CONSULT: GO TO 2.

YES

Without CONSULT: GO TO 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	F92	95	E20	152	Courtesy of NISSAN NORTH AMERICA, INC.
   2		91
   3		92
   4		104
   5		102
   6		94
   7		105
   8		101

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

Is the inspection result normal?

YES

INSPECTION END

NO

Go to Diagnosis Procedure .