Qashqai J11. Engine control system (K9K) — part 3
SYSTEM
ECK-33
< SYSTEM DESCRIPTION >
[K9K]
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The high-pressure pump is self-supplied by an integrated gear pump. This supplies the rail, whose pressure is
controlled for loading by the fuel flow actuator. The flow regulation actuator allows the high-pressure fuel pump
to supply only the necessary quantity of diesel for maintaining pressure in the rail.
INJECTION CONTROL
The injection control parameters are the quantities to inject and their respective advances. The system per-
forms one to six injections.
An electrical current (impulse or pulse) is sent to each injector holder based on the previously computed data.
The piezoelectric injectors ensure injected fuel quantity with an excellent repeatability of the injection process.
Piezoelectric actuators work like capacitors. To control the injector, ECM punctually drives energy resulting in
the actuator deformation and injector opening.
During the injection time, piezoelectric actuator stores this energy, the length of electrical pulse is computed
with the fuel flow demand and injectors characteristics. At the end of the injection time, ECM recovers energy
to send at the start of control. Piezoelectric actuator then discharges and returns to its initial shape. The injec-
tor nozzle closes.
Injector Adjustment Value Registration
At the factory, each injector is calibrated for specific pressure needs on a test bench, and the values are indi-
cated on a label attached to the injector holder body. The individual injector correction values are then written
to ECM, enabling the ECM to control the injectors by taking into account the variance from the factory produc-
tion dispersion.
A specific strategy controls fuel injection deviations and dispersion during engine life (called Minimum Fuel
Mass Adaptation strategy).
This function defines individual injector correction to compensate the injector drift to enhance the delivery fuel
accuracy.
TEMPERATURE BEFORE TURBINE CONTROL
Upstream turbine temperature control sequentially uses injection parameters:
• Main injection phasing
• Post injection fuel mass
• Total fuel mass quantity
• Maximum torque
In normal combustion mode (without regeneration), the regulation aims to protect the turbine. when the tem-
perature exceeds the recommended limits, the regulation is able to limit total fuel mass quantity and torque
demand.
In regeneration mode, to increase the temperature in exhaust line, the regulation controls main injection phas-
ing and post injection.
The purpose is to obtain the highest temperature while respecting the recommended limits. In addition, the
regulation protects the turbine when the temperature is too hot.
WATER IN FUEL FUNCTION
The water in fuel detection sensor is an optional sensor integrated in the fuel filter. This function prevents seri-
ous damages on the common-rail system caused by water presence.
AFTER TREATMENT SYSTEM
AFTER TREATMENT SYSTEM : System Description
INFOID:0000000010471227
DESCRIPTION
This system has two main functions:
• Use the present oxygen in exhaust gases to transform the CO in CO2, and the HC in CO2 and H2O.
• Increase the temperature of exhaust gases (with the exothermal energy of the oxidation reaction) to allow
the regeneration in the DPF (Diesel Particulate Filter).
To be effective, the catalytic converter must reach the working temperature of 350 to 400
°
C (662 to 752
°
F).
DPF (DIESEL PARTICULATE FILTER)
The DPF filters up to 99% of the soot particulates that have not been filtered out up to this point. These partic-
ulates consist essentially of micro-spherules of carbon on which hydrocarbons from the fuel and lubricant
have condensed.
The quantity of particulates and their composition depend on:
• The combustion process (an homogeneous air/fuel mixture minimizes particulate formation)
• The quantity of diesel (increasing the cetane index limits the number of particulates formed)
• The post-processing efficiency (only filtration allows the particulates to be removed efficiently)
ECK-34
< SYSTEM DESCRIPTION >
[K9K]
SYSTEM
The DPF is a porous structure with channels set out in such a way as to force the exhaust gases through the
chamber walls.
In normal operation, DPF captures all the particulates emitted by the engine and so fills up progressively. It
therefore becomes necessary to eliminate all the accumulated particulates, which is done by combustion
(regeneration).
REGENERATION
The purpose of regeneration is to burn the particulates accumulated in the filter. In presence of oxygen, the
particulates combustion regeneration occurs naturally when the temperature of exhaust gases exceeds 570
°
C
(1058
°
F). In urban driving conditions, the engine barely reaches high temperature, and the exhaust gas tem-
perature consequently varies between 150
°
C (302
°
F) and 200
°
C (392
°
F). Therefore, it is necessary the DPF
(Diesel Particulate Filter) regeneration system, which does not adversely affect the driving comfort in any driv-
ing condition.
A differential pressure sensor detects filter load status (particulate mass) and triggers the regeneration opera-
tion. This takes place by means of a controlled combustion that raises the exhaust gas temperature up
between 550
°
C (1022
°
F) and 650
°
C (1202
°
F) at the filter intake.
Regeneration is continuously executed according to the following:
Regarding driving conditions:
• Vehicle speed
• Ambient pressure
• Temperature upstream DPF
• Engine coolant temperature
DPF charging level criteria:
• Soot mass [(computed using DPF charging curves (exhaust gas flow according to differential pressure)]
• Simulated soot mass [computed using mapped soot mass emission speed (g/s)]
• Driven distance since last successful regeneration
• Regeneration failures counter
ECM activates many engine management function to ensure good regeneration efficiency:
• Fuel system: A specific injection pattern using post injections is activated.
• Air system: EGR volume control valve is closed and throttle valve (intake) is used to control engine air flow.
In regeneration mode, other boost pressure set points are defined.
• Auxiliary functions: These functions (e.g. thermoplunger, etc.) are used to increase engine load.
At the same time, two specific exhaust gas temperature controllers are sequentially activated:
• Upstream turbine temperature control: As soon as a DPF regeneration is requested, the regulation is acti-
vated in order to obtain the highest safe upstream turbine temperature for any engine operating point and
without turbine damage risk (over temperature).
• Upstream DPF temperature control: This regulation is activated to heat DPF and to control its regeneration.
REGULATION OF TEMPERATURE BEFORE DPF
Regulation of the exhaust gas temperature before DPF is needed to complete a secure regeneration. This
strategy uses both exhaust line injectors and late post injections.
ECM computes the fuel mass flow injected by injectors (post injection) according to several parameters:
• Exhaust line temperature before DPF
• Atmospheric pressure
• Intake air temperature
• Differential pressure of the DPF
• Minimum level of fuel
• Engine speed
• Engine torque
COOLING FAN CONTROL
COOLING FAN CONTROL : System Description
INFOID:0000000010471228
SYSTEM DESCRIPTION
The cooling of the engine is done by a double speed motor driven fan unit (FAN1: small speed; FAN2: high
speed). The ECM controls cooling fan relays through CAN communication line.
When the engine is running
SYSTEM
ECK-35
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[K9K]
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To cool the engine, a request for FAN1 activation is sent when the engine coolant temperature exceeds 99
°
C
(210
°
F) and a deactivated request is sent when the engine coolant temperature becomes lower than 96
°
C
(204
°
F).
When the engine coolant temperature continues to increase, a request for FAN2 activation is sent when the
engine coolant temperature exceeds 102
°
C (215
°
F) and a deactivated request is sent when the engine cool-
ant temperature becomes lower than 99
°
C (210
°
F).
When the engine coolant temperature continues to increase and exceeds the alert threshold calibrated at
115
°
C (239
°
F), ECM judges the engine is over temperature status until the temperature becomes lower than
110
°
C (230
°
F).
In case of an abnormally high engine coolant temperature, the maximum engine torque is reduced; the driver
will then feel a lack of engine power.
When the engine is not running
Only a FAN1 activation request can be sent for anti-percolation purpose (engine stopped with high engine
coolant temperature). The anti-percolation function is active after ignition switch OFF for a defined maximum
time. At ignition switch OFF, a FAN1 activation request is sent if the engine coolant temperature exceeds
100
°
C (212
°
F) and a cutting request is sent when the engine coolant temperature becomes lower than 95
°
C
(203
°
F).
When there is a default on the engine coolant temperature signal, the FAN1 activation is permanently
requested (engine running).
In addition to this, depending on the equipment mounted on the vehicle, the ECM can also send an activation
request for air conditioning needs or automatic transmission needs or DPF (Diesel Particulate Filter) regener-
ation needs.
THERMOSTAT CONTROL
THERMOSTAT CONTROL : System Description
INFOID:0000000010471229
SYSTEM DRAWING
For system drawing of the thermostat control, Refer to
DESCRIPTION
This engine has an engine coolant bypass valve and a thermoplunger and uses them for improving a warm-up
time.
Thermoplunger
The thermoplunger is installed to the engine coolant line and directly warms up engine coolant.
In addition, this system increases the engine load by adding extra consumers to the alternator, in case of DPF
(Diesel Particulate Filter) regeneration (to help the engine load rise).
ECM transmits a thermoplunger operating signal to the thermoplunger control unit when engine coolant tem-
perature is low.
The thermoplunger control unit applies power to the thermoplunger according to the received signal and
warms up engine coolant.
And ECM activates the thermoplunger during DPF (Diesel Particulate Filter) regeneration and increases elec-
tric load for get more engine load to perform normal DPF regeneration.
ECM controls thermoplunger based on the following information.
• Engine coolant temperature
• Battery voltage
• Engine speed
• Alternator load
GLOW CONTROL
GLOW CONTROL : System Description
INFOID:0000000010471230
SYSTEM DESCRIPTION
Glow control system operates at engine starting and after engine starting. The system energizes glow plug
according to engine coolant temperature to improve engine starting function.
When the ignition switch is turned ON, the glow control system starts Pre-glow and the glow indicator lamp
turns ON. When the engine starts, the glow indicator lamp turns OFF and the glow control state changes to
After-glow.
Glow time varies according to engine coolant temperature, barometric pressure and battery voltage.
OIL CONTROL SYSTEM
ECK-36
< SYSTEM DESCRIPTION >
[K9K]
SYSTEM
OIL CONTROL SYSTEM : System Description
INFOID:0000000010471231
DESCRIPTION
ECM calculates oil degradation based on engine speed and vehicle speed, and displays engine oil change
timing on combination meter.
When the mileage before engine oil change comes to approximately 1500 km or less, pre-alert message is
displayed to inform the driver that the maintenance timing is close as shown in the following table.
At oil change, the mileage must be reset using combination meter function. For how to reset, refer to
NOTE:
• Alerted mileage might be different from actual mileage.
• The level of oil deterioration may be increased depending on the status of vehicle use (e.g. frequent short-
distance driving and engine start).
ECM calculates two types of oil deterioration
• Oxidation
• Dilution
Calculating oxidation of engine oil
Based on engine speed, ECM calculates the degree of oxidation of oxidation by adding correction value calcu-
lated from engine oil temperature and so on.
Calculating dilution of engine oil
ECM calculates the degree of dilution, based on air temperature, injection quantity at post-injection, the num-
ber of regeneration and so on.
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Description
INFOID:0000000010289655
BASIC ASCD SYSTEM
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 180 km/h (119 MPH).
ECM controls fuel injector to regulate engine speed.
Operation status of ASCD is indicated on the information display in the combination meter. If any malfunction
occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in a safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press ASCD MAIN switch. (CRUISE indicated on the information display)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 180 km/h (119
MPH), press SET/COAST switch. (SET indicated on the information display)
ACCELERATE OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
• CANCEL switch is pressed
• More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
• Brake pedal is depressed
• Clutch pedal is depressed or gear position is changed to neutral position.
• Vehicle speed decreased under 15% of the set speed from the set speed.
• TCS system is operated.
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator.
• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE indicator may
blink slowly.
SYSTEM
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[K9K]
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When the engine coolant temperature decreases to the normal operating temperature, CRUISE indicator will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
• Malfunction for some self-diagnoses regarding ASCD control: SET indicator will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is pressed after cancel operation other than pressing ASCD MAIN
switch is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition
must meet following conditions.
• Brake pedal is released
• Clutch pedal is released
• Vehicle speed is greater than 40 km/h (25 MPH) and less than 180 km/h (119 MPH)
SPEED LIMITER
SPEED LIMITER : System Description
INFOID:0000000010289656
BASIC SPEED LIMITER SYSTEM
The speed limiter is a system that enables to restrict the vehicle speed within the set speed that is selected by
the driver. Driver can set vehicle speed between 30 km/h and 180 km/h (in the metric system mode) or 20
MPH and 119 MPH (in the yard/pound system mode). ECM controls fuel injector to regulate vehicle speed.
Operation status of speed limiter is indicated on the information display in the combination meter. If any mal-
function occurs in speed limiter system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press speed limiter MAIN switch. (LIMIT indicated on the information display)
By pressing the SET/COAST switch, the vehicle speed can be set within the range between 30 km/h (20
MPH) and 180 km/h (119 MPH). (SET and set speed is indicated on the information display)
When pressing the RESUME/ACCELERATE switch, the set speed can be increased.
When pressing the SET/COAST switch, the set speed can be decreased.
CANCEL OPERATION
When any of following conditions exist, speed limiter operation will be canceled.
• Speed limiter MAIN switch pressed (Set speed will be cleared)
• ASCD MAIN switch pressed (Set speed will be cleared)
• CANCEL switch is pressed
• Accelerator pedal is fully depressed (kickdown)
ECK-38
< SYSTEM DESCRIPTION >
[K9K]
SYSTEM
When the accelerator pedal is depressed within the range shown in the figure (A) below, the accelerator
pedal reaction force strengthens. Further depressing the accelerator pedal within the (C) range cancels the
speed limiter. This allows acceleration in emergencies.
RESUME OPERATION
After the speed limiter is released by other method than the MAIN switch, the RESUME/ACCELERATE switch
allows to set the vehicle speed again to the one that is previously set before releasing the speed limiter.
GEAR SHIFT INDICATOR SYSTEM
GEAR SHIFT INDICATOR SYSTEM : System Description
INFOID:0000000010505834
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
The gear shift indicator is controlled by ECM and indicates recommended gear shift timing on the combination
meter.
• Upward arrow indication (
↑
): Upshift recommendation
• Downward arrow indication (
↓
): Downshift recommendation
ECM calculates optimal gear shift timing for better fuel consumption, according to the input signal and a gear
ratio. In addition, the recommended gear shift timing is corrected, according to driver’s operation and road
conditions. ECM transmits a gear shift indicator signal to the combination meter via CAN communication line.
The gear shift indicator is deactivated when any of the following conditions is satisfied;
• Shift lever is in neutral position.
• Vehicle is under cruise control (ASCD function) or speed limit (speed limiter function).
• MIL (Malfunction Indicator Lamp) is indicated.
• ABS system or ESP system is operating.
STOP/START SYSTEM
JMBIA1518GB
JSBIA5004GB
SYSTEM
ECK-39
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[K9K]
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STOP/START SYSTEM : System Description
INFOID:0000000010499029
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
JSBIA5071GB
ECK-40
< SYSTEM DESCRIPTION >
[K9K]
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 IPDM E/R is ready to op-
erate the stop/start system. For
details, refer to
GY MANAGEMENT SYSTEM :
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
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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
ECK-42
< SYSTEM DESCRIPTION >
[K9K]
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
SYSTEM
ECK-43
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When the engine restart conditions are satisfied, ECM activates the engine restart relay, the engine restart
bypass control relay, and the engine restart bypass relay to restart the engine. And the DC/DC converter
boosts the voltage during cranking to protect the electrical equipment from low voltage.
After restarting the engine, the stop/start indicator lamp and the indication on the information display turn OFF.
NOTE:
• When engine restart conditions are satisfied during the electric parking brake operation, ECM performs the
engine restart after the completion of the electric parking brake operation. This may cause delay in engine
restart, compared with a usual engine restart.
• When the electric parking brake operation and engine restart occur simultaneously, the electric parking
brake activates after the completion of engine restart.
Stop/Start Readiness Condition
ECM judges stop/start system is ready when the following conditions are satisfied.
*1: Depends on the vehicle conditions.
Item
Condition
Vehicle
Stop/start OFF switch
OFF (Switch indicator: OFF)
Stop/start indicator Lamp
Not blink (No malfunction)
Door (driver side)
Close
Seat belt (driver side)
Fastened
Driving history
Drive the vehicle at 20 km/h (12 MPH) or more after start the en-
gine with ignition switch
Passes 2 minutes or more after start the engine with ignition
switch
*1
Gear position other than neutral is selected after restart
Drive the vehicle at 4 km/h (2.5 MPH) or more after restart
Passes 5 seconds or more after restart
Hood
Close
Air conditioning
Automatic air condi-
tioning
Not in DEF mode
Receives Stop/start permit signal
(for details, refer to
HAC-32, "STOP/START SYSTEM : System
Manual air condi-
tioning
Not in DEF mode
ABS
System is normal
ABS not activated
*2
ESP not activated
EPS
System is normal
Battery status
Receives Stop/start permit signal from IPDM E/R.
(for details, refer to
CHG-8, "ENERGY MANAGEMENT SYSTEM
Elevation
2,000 m (6,562 ft) or less
Intelligent parking assist
OFF
Engine
MIL (Malfunction indicator lamp)
Not illuminate (No malfunction)
DPF
Not regeneration
Engine coolant temperature
19 - 105
°
C (67 -221
°
F)
Fuel temperature
90
°
C (194
°
F) or less
Turbocharger temperature
670
°
C (1238
°
F) or less
Starter motor
The number of starter motor operations exceeds the specified
times
High pressure fuel pump
The number of high pressure fuel pump operations exceeds the
specified times
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
ECK-45
< 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
ECK-47
< SYSTEM DESCRIPTION >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
ECK
N
P
O
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
ECK-48
< SYSTEM DESCRIPTION >
[K9K]
OPERATION
SET SPEED RANGE
Speed limiter system can be set the following vehicle speed.
SWITCH OPERATION
OIL CONTROL SYSTEM
OIL CONTROL SYSTEM : Switch Name and Function
INFOID:0000000010289662
SWITCHES AND INDICATORS
SWITCH OPERATION
RESET OPERATION
CAUTION:
When an alert was displayed, change the engine oil, and reset the engine oil data.
1.
Turn ignition switch ON.
2.
On information display, select “Settings” >> “Maintenance” >> “Service”.
3.
Press “ENTER” switch until “YES/NO” is appeared.
1.
Speed limiter 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
Minimum speed (Approx.)
Maximum speed (Approx.)
30 km/h (20 MPH)
180 km/h (119 MPH)
Item
Function
CANCEL switch
Cancels the speed limiter control.
ACCL/RES switch
• Resumes the set speed.
• Increases the set speed incrementally.
COAST/SET switch
• Sets desired speed.
• Decreases the set speed incrementally.
Speed limiter MAIN switch
Master switch to activate the speed limiter system.
A.
Combination meter
B.
Steering
1.
Information display
2.
Enter/Up/Down switch
3.
Back switch
4.
Display switch
JSBIA5023ZZ
Item
Function
Steering switch
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