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Home >> Nissan-Datsun >> 2004 >> Maxima SL, RE4F04B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction >> Power Supply Circuit For ECM >> Diagnostic Procedure >> 10) Check ECM Power Supply Circuit-V

10) Check ECM Power Supply Circuit-V

  1. Disconnect ECM harness connector.
  2. Disconnect IPDM E/R harness connector E122.
  3. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 18.

    Refer to Wiring Diagram.

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

OK or NG 

  1. OK: GO TO 15 .
  2. NG: GO TO 11.
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