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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:

Component parts
Component Parts Location ABS actuator and electric unit (control unit) IPDM E/R Brake fluid level switch Front wheel sensor LH (RH similar) Rear wheel sensor LH (RH similar) VDC OFF switch Steering angle sensor (view with steering wheel removed) Sto ...

Diagnosis system (BCM)
Common item Common item : consult function (bcm - common item) Application item Consult performs the following functions via can communication with bcm. System application Bcm can perform the following functions. Intelligent key Intelligent key : consult function (bcm - intelligent ke ...

Structure and operation
TRANSAXLE TRANSAXLE : Cross-Sectional View Converter housing Oil pump Counter drive gear Control valve Oil pan Primary pulley Steel belt Secondary pulley Planetary gear (auxiliary gearbox) Side cover Transaxle case Differential case Final gear Reduction gear Cou ...

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