LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 414 (Engine Control System - DTC) >> DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: Multiple Cylinder Misfire, No. 1 - 6 Cylinder Misfire >> Diagnostic Procedure >> 11. Check A/F Sensor 1 Input Signal

11. Check A/F Sensor 1 Input Signal

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 A/F sensor 1 harness connector.
    Fig 1: Disconnect A/F Sensor 1 Harness Connector
    G00877256Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Disconnect ECM harness connector.
  4. Check harness continuity between the following terminals.

    Refer to WIRING DIAGRAM, "Figure".

    For system wiring diagrams, see SYSTEM WIRING DIAGRAMS .

    Fig 2: Check Harness Continuity Between The Following Terminals
    G00877257Courtesy of NISSAN MOTOR CO., U.S.A.
    1. Continuity should exist. 
  5. Check harness continuity between the following terminals and ground.

    Refer to WIRING DIAGRAM.

    Fig 3: Check Harness Continuity Between The Following Terminals And Ground
    G00877258Courtesy of NISSAN MOTOR CO., U.S.A.
    1. Continuity should not exist. 
  6. Also check harness for short to power.

OK or NG 

  1. OK: GO TO 12.
  2. NG: Repair open circuit or short to ground or short to power in harness or connectors between ECM and A/F sensor 1.
scientia non olet · About LEMON Manuals