Nissan Sentra Service Manual: Fuel filler cap warning system
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination meter.
ECM judges a refueled state, based on a fuel level signal transmitted from the combination meter.
When a very small leak is detected through the EVAP leak diagnosis performed after judging the refueled state, ECM transmits a fuel filler cap warning display signal (request for display ON) to the combination meter via CAN communication.
When receiving the signal, the combination meter turns ON the fuel filler cap warning display.
CAUTION:
Check fuel filler cap installation condition when the fuel filler cap warning display turns ON.
Reset Operation
The fuel filler cap warning lamp tunes OFF, according to any condition listed below:
- Reset operation is performed by operating the meter control switch on the combination meter. Refer to MWI- 16, "Description".
- When the reset operation is performed, the combination meter transmits a fuel filler cap warning reset signal to ECM via CAN communication. ECM transmits a fuel filler cap warning display signal (request for display OFF) to the combination meter via CAN communication. When receiving the signal, the combination meter turns OFF the fuel filler cap warning display.
- EVAP leak diagnosis result is normal.
- Fuel refilled.
- DTC erased by using CONSULT.
NOTE:
MIL turns ON if a malfunction is detected in leak diagnosis results again at the trip after the fuel filler cap warning display turns ON/OFF.
Engine protection control at low engine
oil pressure
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System Description
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Engi ...
Air conditioning cut control
AIR CONDITIONING CUT CONTROL : System Description
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
Sensor
Input Signal to ECM
ECM function
Actuator
Crankshaft position sensor ( ...
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Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG"
and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT
BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injur ...
Keyfob (if so equipped)
Replace the battery in the keyfob as follows:
Remove the screw A .
Insert a small screwdriver into the slit of the
corner B and twist it to separate the upper
part from the lower part. Use a cloth to
protect the casing.
Replace the battery with a new one.
Do not touch the int ...
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When both power window main switch and rear power window switch lh are
operated
When both power window main switch and rear power window switch lh are
operated : diagnosis procedure
1.CHECK REAR POWER WINDOW SWITCH LH
Check rear power window switch LH.
Refer to PWC-40, "REAR POWER WIN ...
