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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2014 (LAN System) >> Can >> Trouble Diagnosis >> ECM Branch Line Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
      • ECM connector
      • Harness connector E2
      • Harness connector F32

    OK or NG 

    OK: GO TO 2.

    NG: Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT 
    1. Disconnect the connector of ECM.
    2. Check the resistance between the ECM harness connector terminals.
      TERMINALS RESISTANCE SPECIFICATION

      ECM harness connector Resistance (Ω)
      Connector No. Terminal No.
      E16 94 86 Approx. 108 - 132

    OK or NG 

    OK: GO TO 3.

    NG: Repair the ECM branch line.

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT 

    Check the power supply and the ground circuit of the ECM. Refer to "POWER SUPPLY AND GROUND CIRCUIT ".

    OK or NG 

    OK:

    NG: Repair the power supply and the ground circuit.