3. Check Overall Function

Without CONSULT-II 

1. Let engine idle.
2. Read the voltage signal between ECM terminals 60, 61, 62, 79, 80, 81 and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as shown in Fig 2.
   NOTE: The pulse cycle changes depending on rpm at idle.
   Fig 1: Checking Overall Function

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: Typical Ignition Waveform Pattern

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: INSPECTION END 

NG: GO TO 10 .