Nissan Qashqai J11. Manual — part 471
SYSTEM
EC9-39
< SYSTEM DESCRIPTION >
[R9M]
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STOP/START SYSTEM : System Description (M/T models)
INFOID:0000000010308990
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
JSBIA5071GB
EC9-40
< SYSTEM DESCRIPTION >
[R9M]
SYSTEM
Input/
Output
Transmits/Receives component
Signal name
Description
Input
Crankshaft position sensor
Crankshaft position sensor signal
Detects an engine speed.
Engine coolant temperature
sensor
Engine coolant temperature sensor signal
Detects an engine coolant tem-
perature.
Clutch pedal position switch
Clutch pedal position switch signal
Detects the clutch pedal is de-
pressed (not released).
Clutch pedal interlock switch
Clutch pedal interlock switch signal
Detects the clutch pedal is de-
pressed (fully depressed).
Neutral position switch
Neutral position switch signal
Detects the neutral position.
Atmospheric pressure sensor
(integrated in ECM)
Atmospheric pressure sensor signal
Detects an atmospheric pres-
sure.
IPDM E/R
CAN communica-
tion
Stop/Start permit signal
Detects the IPDM E/R is ready to
operate the stop/start system.
For details, refer to
ERGY MANAGEMENT SYS-
TEM : System Description"
Battery current signal
Detects battery current.
Neutral position switch signal
Detects the neutral position.
Hood switch signal
Detects engine hood status.
Battery current sensor malfunc-
tion signal
Detects the battery current sen-
sor is normal.
BCM
CAN communica-
tion
Ignition switch status signal
Detects ignition switch status.
Door switch signal
Detects the status of driver side
door.
Stop/Start OFF switch signal
Detects stop/start OFF switch
status.
ABS actuator and electric unit
(control unit)
CAN communica-
tion
Vehicle speed signal
Detects vehicle speed.
Brake booster pressure sensor
signal
Detects a pressure in brake
booster.
ABS operation signal
Detects ABS operation.
ESP operation signal
Detects ESP operation.
EPS control unit
CAN communica-
tion
EPS torque signal
Detects an operational state of
EPS system.
Stop/Start inhibit signal
Receives the intelligent parking
assist status signal sent from the
around view monitor control unit
through the EPS control unit.
A/C auto amp.
CAN communica-
tion
Stop/Start permit signal
Detects the air conditioning sys-
tem is ready to operate the stop/
start system. For details, refer to
HAC-32, "STOP/START SYS-
TEM : System Description"
Combination meter
CAN communica-
tion
Seat belt buckle switch signal
Detects driver is sitting on the
driver seat.
DC/DC converter
LIN communication
Operation status signal
Detects an operational state of
DC/DC converter.
Diagnosis signal
Detects DC/DC converter mal-
function.
SYSTEM
EC9-41
< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
The stop/start system enables the engine to automatically stop/restart with a simple operation and reduces
unnecessary idling during stoplight or traffic congestion to improve fuel economy, reduce exhaust gas, and
minimize noise.
ECM detects a vehicle condition, engine condition and driver
′
s operation condition based on signals sent from
each unit and the sensors to comprehensively control the stop/start system.
The operation condition of the stop/start system is indicated by the stop/start indicator lamp on the combina-
tion meter and showing on the information display (dot matrix information display). (Refer to
.) If a malfunction is detected in the stop/start system, the system control is automatically
deactivated and the malfunction is alerted to the driver by blinking the stop/start indicator lamp and showing
the status on the information display (dot matrix information display). When a driver
′
s operation is judged as
dangerous one during the stop/start system operation, the stop/start indicator lamp blinks at a high speed and
the status is shown on the information display (with dot matrix information display). The buzzer mounted on
the combination meter sounds simultaneously to warn the driver of the dangerous operation.
NOTE:
Starting the engine from stop/start system operation is regarded as “Restart”.
Output
Around view monitor control unit
CAN communica-
tion
Stop/Start status signal
Transmits a stop/start status sig-
nal
BCM
CAN communica-
tion
Stop/Start status signal
Transmits a stop/start status sig-
nal
ABS actuator and electric unit
(control unit)
CAN communica-
tion
Stop/Start status signal
Transmits a stop/start status sig-
nal
EPS control unit
CAN communica-
tion
Stop/Start status signal
Transmits a stop/start status sig-
nal
EPS assist request signal
Transmits EPS assist permit/in-
hibit signal.
A/C auto amp.
CAN communica-
tion
Stop/Start status signal
Transmits a stop/start status sig-
nal
Combination meter
CAN communica-
tion
Stop/Start status signal
Transmits a stop/start status sig-
nal
Stop/Start indicator lamp request
signal
Transmits request signal which
turn ON the stop/start indicator
lamp.
DC/DC converter
DC/DC converter operation check signal
Check DC/DC converter opera-
tion status.
Input/
Output
Transmits/Receives component
Signal name
Description
EC9-42
< SYSTEM DESCRIPTION >
[R9M]
SYSTEM
BASIC OPERATION
FUNCTION DESCRIPTION
When the stop/start system readiness conditions are satisfied while the vehicle is moving, the system is ready.
When the stop/start system operation conditions are satisfied while the vehicle is in a stop condition, the
engine is stopped.
During stop/start system operation, stopping time, the amount of fuel saved by the stop/start system and CO
2
saved information are indicated on the combination meter. (With dot matrix information display. Refer to
17, "INFORMATION DISPLAY : System Description"
.)
JSBIA3733GB
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