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Nissan Sentra Service Manual: Diagnosis description : malfunction indicator lamp (MIL)

Nissan Sentra Service Manual / Engine / Engine control system / Operation / Diagnosis description : malfunction indicator lamp (MIL)

When emission-related ECU detects a malfunction in the emission control systems components and/or the powertrain control components (which affect vehicle emissions), it turns on/blinks MIL to inform the driver that a malfunction has been detected.

  1. The MIL illuminates when ignition switch is turned ON (engine is not running).

NOTE:

Check the MIL circuit if MIL does not illuminate. Refer to EC- 467, "Component Function Check".

  1. When the engine is started, the MIL should go off.

NOTE:


NOTE:

If MIL continues to illuminate/blink, perform self-diagnoses and inspect/repair accordingly because an emission-related ECU has detected a malfunction in the emission control systems components and/or the powertrain control components (which affect vehicle emissions).

Diagnosis description : permanent diagnostic trouble code (permanent DTC)
Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A. ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as a permanent DTC until ECM judg ...

On board diagnosis function
ON BOARD DIAGNOSIS ITEM The on board diagnostic system has the following functions. Diagnostic test mode Function Bulb check MIL can be checked. SRT status ECM can ...

Other materials:

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Booster seats
Precautions on booster seats WARNINGIf a booster seat and seat belt are not used properly, the risk of a child being injured in a sudden stop or collision greatly increases: Make sure the shoulder portion of the belt is away from the child’s face and neck and t ...

Basic inspection
Diagnosis and repair workflow Work Flow Detailed flow 1.Interview from the customer Clarify customer complaints before inspection. First of all, perform an interview utilizing stc-20, "diagnostic work sheet" and reproduce symptoms as well as fully understand it. Ask customer abou ...

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