Nissan Versa Sedan. Manual — part 261
SYSTEM
EC-43
< SYSTEM DESCRIPTION >
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*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, engine oil tempera-
ture and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve
timing (IVT) control solenoid valve depending on driving status. This makes it possible to control the shut/open
timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.
EXHAUST VALVE TIMING CONTROL
EXHAUST VALVE TIMING CONTROL : System Diagram
INFOID:0000000009267003
EXHAUST VALVE TIMING CONTROL : System Description
INFOID:0000000009267004
INPUT/OUTPUT SIGNAL CHART
JPBIA4884GB
JPBIA4885GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed
*1
Piston position
Exhaust valve timing control
Exhaust valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine oil temperature sensor
Engine oil temperature
Engine coolant temperature sensor
Engine coolant temperature
Combination meter
Vehicle speed
*2
EC-44
< SYSTEM DESCRIPTION >
[HR16DE]
SYSTEM
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the exhaust
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, engine oil tempera-
ture and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the exhaust valve
timing (EVT) control solenoid valve depending on driving status. This makes it possible to control the shut/
open timing of the exhaust valve to increase engine torque and output in a range of high engine speed.
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System Dia-
gram
INFOID:0000000009267005
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System De-
scription
INFOID:0000000009267006
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
• The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pres-
sure by the oil pressure warning lamp a before the engine becomes damaged.
• When detecting a decrease in engine oil pressure at an engine speed less than 1,000 rpm, ECM transmits
an oil pressure warning lamp signal to the combination meter. The combination meter turns ON the oil pres-
sure warning lamp, according to the signal.
JPBIA4886GB
JSBIA0704GB
Sensor
Input signal to ECM
ECM function
Actuator
Engine oil pressure sensor
Engine pressure
Engine protection control
• Oil pressure warning lamp signal
Combination meter
• Oil pressure warning lamp
Crankshaft position sensor (POS) Engine speed
SYSTEM
EC-45
< SYSTEM DESCRIPTION >
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*: When detecting a normal engine oil pressure, ECM turns OFF the oil pressure warning lamp.
FUEL FILLER CAP WARNING SYSTEM
FUEL FILLER CAP WARNING SYSTEM : System Diagram
INFOID:0000000009267007
FUEL FILLER CAP WARNING SYSTEM : System Description
INFOID:0000000009267008
INPUT/OUTPUT SIGNAL CHART
Input
*: This signal is sent to the ECM via the CAN communication line.
Output
*: This signal is sent to the combination meter via the CAN communication line.
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
Decrease in engine
oil pressure
Engine speed
Combination meter
Oil pressure warning lamp
Detection
Less than 1,000 rpm
ON*
1,000 rpm or more
ON
Unit/Sensor
Input signal to ECM
ECM function
EVAP control system pressure sensor
Pressure in purge line
Fuel filler cap warning control
Combination meter
Fuel level sensor signal
*
Fuel filler cap warning reset signal
*
JSBIA1456GB
Unit
Output signal
Actuator
ECM
Fuel filler cap warning display signal
*
Combination meter
EC-46
< SYSTEM DESCRIPTION >
[HR16DE]
SYSTEM
The fuel filler cap warning lamp tunes OFF, according to any condition listed below:
• Reset operation is performed by operating the odo/trip meter switch (TYPE A) or switch (TYPE B) on the
combination meter. Check the vehicle type to confirm the service information in MWI section. Refer to
.
- 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 warn-
ing display turns ON/OFF.
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Diagram
INFOID:0000000009267009
NOTE:
Transmission range switch and TCM is also for A/T models.
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Description
INFOID:0000000009267010
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line
JPBIA4713GB
Sensor
Input signal to ECM
ECM function
Actuator
Brake pedal position switch
Brake pedal operation
ASCD vehicle speed control
Electric throttle control actuator
Stop lamp switch
Clutch pedal position switch
(M/T models)
Clutch pedal operation
ASCD steering switch
ASCD steering switch operation
Transmission range switch
(A/T models or CVT models)
PNP signal
Park/neutral position (PNP)
switch
(M/T models)
Combination meter
Vehicle speed signal*
TCM
(A/T models or CVT models)
Output shaft revolution signal*
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