Nissan Qashqai J11. Manual — part 371
ECK-44
< SYSTEM DESCRIPTION >
[K9K]
SYSTEM
*2: If ABS system is activated, drive the vehicle at 12 km/h (7.5 MPH) or more after stop the vehicle.
CAUTION:
• The stop/start system may be cancelled when the battery is weak or if a battery other than the stop/
start system specific battery is used.
• Even though the vehicle is in above conditions, the stop/start system may be cancelled automati-
cally.
Refer to
ECK-10, "Precaution for Stop/Start System Service"
.
Stop/Start Operation Condition
When the following conditions are satisfied, ECM stops the engine. And the combination meter turns ON a
stop/start indicator lamp.
NOTE:
During the operation of the stop/start system, the stop/start system continues operating even if the vehicle is
stopped by using the parking brake.
Restart Condition
When any of the following conditions is satisfied during stop/start system operating condition (gear position is
neutral), ECM restarts the engine. And the combination meter turns OFF the stop/start indicator lamp.
*: Restart timing varies according to vehicle condition. For details, refer to RELATIONSHIP BETWEEN VEHI-
CLE CONDITION AND RESTART TIMING.
NOTE:
In models with M/T, the stop/start system operates continuously even if the steering wheel is operated during
the system operating condition.
Restart Inhibit Mode
When the any of the following condition is satisfied during stop/start system operating condition, ECM inhibits
restart of the engine (go into a state in ENGINE STALL). In this case, the engine needs to be started with igni-
tion switch.
Item
Condition
Vehicle
Stop/start readiness condition
Ready
Vehicle speed
Vehicle stopped [0 km/h (0 MPH)]
Steering wheel
Not steer (steering force does not occur)
Brake booster pressure
Presence of sufficient negative pressure to a brake-
force. (Refer to
BUTION FUNCTION : System Description"
Clutch pedal position
Released
Engine
Engine speed
Around idle speed (Approx. 850 rpm or less)
Transmission
Shift lever position
Neutral position
Item
Condition
Stop/start OFF switch
ON (Switch indicator: ON)
Clutch pedal position
Fully depressed
*
Air conditioning
Automatic air conditioning
DEF switch is pressed.
Air conditioning system cannot keep the perfor-
mance.
Manual air conditioning
Mode dial is in DEF position.
Brake booster pressure
Insufficient negative pressure for braking force
Vehicle speed
2 km/h (1.3 MPH) or more
Intelligent parking assist
Intelligent parking assist is activated.
Battery
Poor battery performance
(for details, refer to
MENT SYSTEM : System Description"
.)
SYSTEM
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< SYSTEM DESCRIPTION >
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*: When the condition is satisfied either door open or seat belt released, ECM transitions to the recovery wait-
ing mode (not ENGINE STALL) for approximately 5 minutes. In this case, the engine is able to start by clutch
operation.
RELATIONSHIP BETWEEN VEHICLE CONDITION AND RESTART TIMING
ECM detects clutch pedal position based on the clutch pedal position switch signal and clutch interlock switch
signal. The engine restart timing varies with gear position, vehicle speed, and clutch position.
Engine restart condition
x: Restart —: Not restart
NOTE:
If the above mentioned “Not restart” condition occurs during restart, ECM stops cranking and returns to the
stop/start system operating condition (engine stop).
ENGINE STALL ASSIST FUNCTION
The engine stall assist function allows the engine to start only with a clutch operation without operating the
ignition switch when a clutch operation is unsuccessful during vehicle start.
When an engine stall caused by a clutch operation error is detected, the stop/start system enters the recovery
waiting mode and ECM indicates the activation of engine stall assist function by illuminating the stop/start indi-
cator lamp. When the clutch pedal is depressed under this condition, the engine starts.
NOTE:
This function also operates at an engine start other than the one performed during stop/start system operation.
This function operates when the following conditions are satisfied:
• After engine warm-up.
• Vehicle stopped. (No vehicle speed input.)
• The battery is charged enough.
• No malfunctions in the engine control system and the stop/start system. (No DTC detected.)
VOLTAGE STABILIZER FUNCTION
ECM transmits a voltage stabilizer signal to the DC/DC converter during cranking at an engine restart. The
DC/DC converter temporarily increases the voltage to prevent the electric equipment from reset due to low
voltage. The adoption of the DC/DC converter enables a stable power supply to the electric equipment con-
nected to the DC/DC converter and permits a substantial lowering of the voltage. For the electrical equipment
connected to the DC/DC converter, see “SYSTEM DIAGRAM.
NOTE:
The brightness of the head lamps may be changed due to the voltage reduction at an engine restart because
they are not connected to the DC/DC converter.
ENGINE RESTART BYPASS RELAY CONTROL
Item
Condition
Engine hood
Opened
Driver presence
*
Absent: Both of the following conditions are
satisfied.
• Seat belt (driver side): Released
• Door (driver side): Open
Vehicle condition
Clutch pedal position
Vehicle
speed
Gear
position
Fully depressed
Half depressed
Released
Clutch pedal
position SW
Clutch interlock
SW
Clutch pedal
position SW
Clutch interlock
SW
Clutch pedal
position SW
Clutch interlock
SW
OFF
ON
OFF
OFF
ON
OFF
Vehicle
stopped
Neutral
x
x
—
Except
neutral
x
—
—
Vehicle
speed oc-
curs
Neutral
x
x
x
Except
neutral
x
—
—
ECK-46
< SYSTEM DESCRIPTION >
[K9K]
SYSTEM
ECM controls the engine restart bypass control relay and activates
the engine restart bypass relay. When the restart conditions are sat-
isfied, ECM turns ON the engine restart bypass control relay instan-
taneously right after the restart and opens the engine restart bypass
relay. This allows a current to pass the inner resistance circuit right
after the starter motor is activated. When the starter motor is rotat-
ing, the voltage is directly supplied to the starter motor without being
passed through the inner resistance circuit in the engine restart
bypass relay because the engine restart bypass relay is closed. In
this way, ECM enables the battery voltage stabilization and reduces
the battery deterioration rate by decreasing the battery voltage drop
resulted from cranking at an engine restart.
ENERGY MANAGEMENT SYSTEM
ENERGY MANAGEMENT SYSTEM : System Description
INFOID:0000000010500313
DESCRIPTION
ECM transmits a target power generation voltage signal received from IPDM E/R to the generator via LIN
communication.
The generator includes a self-diagnosis function and transmits a diagnosis signal to ECM via LIN communica-
tion when detecting a malfunction. When ECM receives a diagnosis signal, ECM detects DTC and transmits a
charge warning lamp request signal to the combination meter to turn ON the charge warning lamp.
For details of ENERGY MANAGEMENT SYSTEM, refer to
CHG-8, "ENERGY MANAGEMENT SYSTEM :
.
CAN COMMUNICATION
CAN COMMUNICATION : System Description
INFOID:0000000010289659
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to
LAN-51, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"
munication for detail.
JSBIA1709GB
JSBIA1710GB
OPERATION
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< SYSTEM DESCRIPTION >
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OPERATION
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Switch Name and Function
INFOID:0000000010289660
SWITCHES AND INDICATORS
SET SPEED RANGE
ASCD system can be set the following vehicle speed.
SWITCH OPERATION
SPEED LIMITER
SPEED LIMITER : Switch Name and Function
INFOID:0000000010289661
SWITCHES AND INDICATORS
NOTE:
Shared with ASCD switch.
1.
CRUISE indicator
2.
CANCEL switch
3.
ACCL/RES switch
4.
COAST/SET switch
5.
Speed limiter MAIN Switch
6.
ASCD MAIN switch
A.
On the combination meter
B.
On the steering wheel
JSBIA5014ZZ
Minimum speed (Approx.)
Maximum speed (Approx.)
40 km/h (25 MPH)
180 km/h (119 MPH)
Item
Function
CANCEL switch
Cancels the cruise control driving.
ACCL/RES switch
• Resumes the set speed.
• Increases speed incrementally during cruise control driving.
COAST/SET switch
• Sets desired cruise speed.
• Decreases speed incrementally during cruise control driving.
ASCD MAIN switch
Master switch to activate the ASCD system.
JSBIA5018ZZ
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