Component Function Check

Turn ignition switch OFF, and restart engine.

Does the engine start? 

YES-1: With CONSULT-III: GO TO 2.

YES-2: Without CONSULT-III: GO TO 3.

NO: Go to "DIAGNOSIS PROCEDURE ".

With CONSULT-III 

1. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III.
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-III 

1. Let engine idle.
2. Read the voltage signal between ECM harness connectors.
   VOLTAGE SPECIFICATION
   
   

   ECM				Voltage signal
   +		-
   Connector	Terminal	Connector	Terminal
   F14	9	E10	112	Courtesy of NISSAN MOTOR CO., U.S.A.
   	10
   	11
   	18
   	19
   	21

   Fig 1: Checking Voltage Signal Between ECM Harness Connectors

   Courtesy of NISSAN MOTOR CO., U.S.A.
   NOTE: The pulse cycle changes depending on RPM at idle.

Is the inspection result normal? 

YES: INSPECTION END

NO: Go to "DIAGNOSIS PROCEDURE ".