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

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
   F52	86	E16	128	Courtesy of NISSAN NORTH AMERICA, INC.
   	87
   	90
   	91

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

Is the inspection result normal?

YES

INSPECTION END

NO

Proceed to Diagnosis Procedure .