Nissan Qashqai J11. Manual — part 473
SYSTEM
EC9-47
< SYSTEM DESCRIPTION >
[R9M]
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STOP/START SYSTEM : System Description (CVT models)
INFOID:0000000010479132
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
JSBIA5076GB
EC9-48
< SYSTEM DESCRIPTION >
[R9M]
SYSTEM
Input/
Output
Transmits/Receives component
Signal name
Description
Input
Accelerator pedal position sen-
sor (integrated ECM)
Accelerator pedal position sensor signal
Detects an accelerator pedal posi-
tion.
Brake pedal position switch
Brake pedal position switch signal
Detects the brake pedal is de-
pressed.
Crankshaft position sensor
Crankshaft position sensor signal
Detects an engine speed.
Engine coolant temperature
sensor
Engine coolant temperature sensor signal
Detects an engine coolant tempera-
ture.
Atmospheric pressure sensor
(integrated in ECM)
Atmospheric pressure sensor signal
Detects an atmospheric pressure.
IPDM E/R
CAN communi-
cation
Stop/Start permit signal
Detects the transmission is ready to
operate the stop/start system.
Battery current signal
Detects battery current.
Hood switch signal
Detects engine hood status.
Battery current sensor malfunc-
tion signal
Detects the battery current sensor is
normal.
BCM
CAN communi-
cation
Ignition switch status signal
Detects ignition switch status.
Stop lamp switch signal
Detects an accelerator pedal posi-
tion.
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 communi-
cation
Vehicle speed signal
Detects vehicle speed.
Brake fluid pressure sensor sig-
nal
Detects brake fluid pressure.
Brake booster pressure sensor
signal
Detects a pressure in brake booster.
ABS operation signal
Detects ABS operation.
ESP operation signal
Detects ESP operation.
Brake hold readiness signal
Detects the brake hold readiness
status judged by the ABS actuator
and electric unit (control unit).
EPS control unit
CAN communi-
cation
EPS torque signal
Detects an operational state of EPS
system.
Stop/Start inhibit signal
Receives the intelligent parking as-
sist status signal sent from the
around view monitor control unit
through the EPS control unit.
A/C auto amp.
CAN communi-
cation
Stop/Start permit signal
Detects the air conditioning system
is ready to operate the stop/start sys-
tem.
Combination meter
CAN communi-
cation
Seat belt buckle switch signal
Detects driver is sitting on the driver
seat.
TCM
CAN communi-
cation
Stop/Start permit signal
Detects the transmission is ready to
operate the stop/start system.
Shift position signal
Detects the transmission is ready to
operate the stop/start system.
G sensor signal
Detects vehicle angularity.
DC/DC converter
LIN communica-
tion
Operation status signal
Detects an operational state of DC/
DC converter.
Diagnosis signal
Detects DC/DC converter malfunc-
tion.
SYSTEM
EC9-49
< SYSTEM DESCRIPTION >
[R9M]
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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 communi-
cation
Stop/Start status signal
Transmits a stop/start status signal
BCM
CAN communi-
cation
Stop/Start status signal
Transmits a stop/start status signal
ABS actuator and electric unit
(control unit)
CAN communi-
cation
Stop/Start status signal
Transmits a stop/start status signal
Brake hold request signal
Transmits the brake hold/release re-
quest according to the stop/start sys-
tem.
EPS control unit
CAN communi-
cation
Stop/Start status signal
Transmits a stop/start status signal
EPS assist request signal
Transmits EPS assist permit/inhibit
signal.
A/C auto amp.
CAN communi-
cation
Stop/Start status signal
Transmits a stop/start status signal
TCM
CAN communi-
cation
Stop/Start status signal
Transmits a stop/start status signal
Combination meter
CAN communi-
cation
Stop/Start status signal
Transmits a stop/start status signal
Stop/Start indicator lamp request
signal
Transmits request signal which turn
ON the stop/start indicator lamp.
DC/DC converter
LIN communica-
tion
DC/DC converter operation
check signal
Checks DC/DC converter operation
status.
DC/DC voltage request signal
Controls the DC/DC output voltage.
Input/
Output
Transmits/Receives component
Signal name
Description
EC9-50
< 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.
In addition, the CVT electric oil pump is activated to supply oil pressure to the clutch and the pulley.
JSBIA5087GB
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