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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2409 (Engine Control System - Introduction (VQ40DE)) >> System Description >> Diagnosis System (ECM) >> Diagnosis Description >> On Board Diagnosis Function >> Malfunction Warning Mode

Malfunction Warning Mode

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Description

In this function ECM turns on or blinks MIL when it detects a malfunction in the emission control system components and/or the powertrain control components (which affect vehicle emissions) to inform the driver that a malfunction has been detected.

Operation Procedure

  1. Turn ignition switch ON.
  2. Check that MIL illuminates.

    If it remains OFF, check MIL circuit. Refer to "WORK FLOW ".

  3. Start engine and let it idle.