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Home >> Infiniti >> 2004 >> G35 Base, 4D Sedan, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 413 (Engine Control System - Introduction) >> Power Supply Circuit For ECM >> Diagnostic Procedure >> 5) Check ECM Ground Circuit For Open And Short-I
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5) Check ECM Ground Circuit For Open And Short-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.
  2. Disconnect ECM harness connector.
  3. Check harness continuity between ECM terminals 1, 115, 116 and engine ground.

    Refer to Wiring Diagram.

    1. Continuity should exist. 
  4. Also check harness for short to power.

OK or NG 

  1. OK: GO TO 6 .
  2. NG: GO TO 5.
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