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2) Check ECM Power Supply Circuit-I

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch OFF and then ON.
  2. Check voltage between ECM terminal 109 and ground with CONSULT-II or tester.
    1. Voltage: Battery voltage 

OK or NG 

  1. OK: GO TO 4 .
  2. NG: GO TO 3.
Fig 1: Check ECM Power Supply Circuit-I
G00875838Courtesy of NISSAN MOTOR CO., U.S.A.
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