Nissan Sentra Service Manual: 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.
- 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".
- When the engine is started, the MIL should go off.
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:
Basic inspection
Diagnosis and repair work flow
Work flow
Overall sequence
Detailed flow
1.Get information for symptom
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred) using the “diagnostic work sheet”. ( ...
Cleaning exterior
In order to maintain the appearance of your vehicle,
it is important to take proper care of it.
To protect the paint surfaces, please wash your
vehicle as soon as you can:
after a rainfall to prevent possible damage
from acid rain.
after driving on coastal roads.
when contaminants suc ...
Supplemental air bag warning light
The supplemental air bag warning light,
displaying in the instrument panel,
monitors
the circuits for the air bag systems, pretensioners
and all related wiring.
When the ignition switch is placed in the ON or
START position, the supplemental air bag warning
light illuminates for about ...
