Qashqai J11. Engine control system (HRA2DDT) — part 3
SYSTEM
ECH-33
< SYSTEM DESCRIPTION >
[HRA2DDT]
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STOP/START SYSTEM : System Description
INFOID:0000000010499034
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
JSBIA5071GB
ECH-34
< SYSTEM DESCRIPTION >
[HRA2DDT]
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
ECH-35
< SYSTEM DESCRIPTION >
[HRA2DDT]
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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
ECH-36
< SYSTEM DESCRIPTION >
[HRA2DDT]
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.
JSBIA3733GB
SYSTEM
ECH-37
< SYSTEM DESCRIPTION >
[HRA2DDT]
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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.
*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.
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 SYS-
.)
Elevation
2,000 m (6,562 ft) or less
Intelligent parking assist
OFF
Engine
MIL (Malfunction indicator lamp)
Not illuminate (No malfunction)
Engine coolant temperature
26 - 105
°
C (79 -221
°
F)
Starter motor
The number of starter motor operations exceeds the specified
times
ECH-38
< SYSTEM DESCRIPTION >
[HRA2DDT]
SYSTEM
Refer to
ECH-8, "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
.)
Clutch pedal position
Released
Engine
Engine speed
Around idle speed (Approx. 750 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"
.)
Item
Condition
Engine hood
Opened
Driver presence
*
Absent: Both of the following conditions are
satisfied.
• Seat belt (driver side): Released
• Door (driver side): Open
SYSTEM
ECH-39
< SYSTEM DESCRIPTION >
[HRA2DDT]
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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
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
—
—
ECH-40
< SYSTEM DESCRIPTION >
[HRA2DDT]
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.
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Description
INFOID:0000000010435772
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 170 km/h (105 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 170 km/h (105
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
• Brake pedal is depressed
• Clutch pedal is depressed or gear position is changed to neutral position.
• Less than 33 km/h (20 MPH).
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.
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.
JSBIA1709GB
JSBIA1710GB
SYSTEM
ECH-41
< SYSTEM DESCRIPTION >
[HRA2DDT]
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• 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 170 km/h (105 MPH)
SPEED LIMITER
SPEED LIMITER : System Description
INFOID:0000000010435773
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 (20 MPH) and 180 km/h (115 MPH) (in the metric
system mode) or 20 MPH and 115 MPH (in the yard/pound system mode). ECM controls fuel injector to regu-
late vehicle speed. Operation status of speed limiter is indicated on the information display in the combination
meter. If any malfunction 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 (115 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)
• CANCEL switch is pressed
• Accelerator pedal is fully depressed (kickdown)
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
JMBIA1518GB
ECH-42
< SYSTEM DESCRIPTION >
[HRA2DDT]
SYSTEM
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:0000000010507155
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.
CAN COMMUNICATION
CAN COMMUNICATION : System Description
INFOID:0000000010379034
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-15, "CAN COMMUNICATION SYSTEM : System Description"
detail.
JSBIA5004GB
OPERATION
ECH-43
< SYSTEM DESCRIPTION >
[HRA2DDT]
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OPERATION
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Switch Name and Function
INFOID:0000000010499122
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:0000000010499123
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)
170 km/h (105 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
ECH-44
< SYSTEM DESCRIPTION >
[HRA2DDT]
OPERATION
SET SPEED RANGE
Speed limiter system can be set the following vehicle speed.
SWITCH OPERATION
STOP/START SYSTEM
STOP/START SYSTEM : Switch Name and Function
INFOID:0000000010499125
SWITCHES AND INDICATORS
SWITCH OPERATION
NOTE:
If stop/start OFF switch turn ON when stop/start system is operating, stop/start system is canceled and engine
restart.
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 (115 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.
1.
Stop/start indicator lamp
2.
Stop/start OFF switch
A.
On the combination meter
B.
Lower instrument panel (driver side)
JSBIA3803ZZ
Item
Function
Stop/start OFF switch
When the switch is pressed, switch indicator (LED) turns ON and the stop/start
system can be deactivated.
HANDLING PRECAUTION
ECH-45
< SYSTEM DESCRIPTION >
[HRA2DDT]
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HANDLING PRECAUTION
Precaution for Stop/Start System
INFOID:0000000010499126
PRECAUTIONS FOR STOP/START SYSTEM OPERATION
The operation of the stop/start system needs to satisfy various conditions. For details of the conditions, refer to
ECH-33, "STOP/START SYSTEM : System Description"
The stop/start system may not operate under the conditions listed below:
• After restarting the engine, the vehicle is repeatedly stopped and started at a low speed due to traffic con-
gestion.
• When driving the vehicle repeatedly back and forth at a low speed due to parallel parking.
• When the intelligent key is not authenticated. (In this case, the KEY warning lamp built in the combination
meter blinks.)
• The battery is deteriorated. (High discharge rate.)
• A battery other than the stop/start system-specific battery is used.
• Ambient temperature is extremely low.
HANDLING PRECAUTIONS
• 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.
For a smooth engine restart under the stop/start system operating condition, restart the engine before
releasing the parking brake.
• To use the stop/start system, the vehicle needs to recognize the status of battery. For this reason, the stop/
start system may not be activated immediately after battery change.
• When restarting the vehicle under stop/start system operating condition, continue depressing the clutch
pedal until the restart completes.
ECH-46
< SYSTEM DESCRIPTION >
[HRA2DDT]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis Description
INFOID:0000000010379035
This system is an on board diagnostic system that records exhaust emission-related diagnostic information
and detects a sensors/actuator-related malfunction. A malfunction is indicated by the malfunction indicator
(MIL) and stored in ECU memory as a DTC. The diagnostic information can be obtained with the diagnostic
tool (GST: Generic Scan Tool).
NOTE:
OBD is not applied for regions where it is not mandated.
MALFUNCTION INDICATOR LAMP
When detecting a DTC that affects exhaust gas, the exhaust emis-
sion-related control module transmits a malfunction indicator signal
to ECM via CAN communication line.
ECM prioritizes the signal received from the exhaust emission-
related control module and the ECM-stored DTC that affects exhaust
gas and transmits a malfunction indicator lamp signal to the combi-
nation meter via CAN communication line.
The combination meter turns ON the MIL, according to the signal
transmitted from ECM, and alerts the driver of malfunction detection.
JPNIA1882ZZ
DIAGNOSIS SYSTEM (ECM)
ECH-47
< SYSTEM DESCRIPTION >
[HRA2DDT]
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DIAGNOSIS SYSTEM (ECM)
CONSULT Function
INFOID:0000000010379036
FUNCTION
*: The following emission-related diagnostic information is cleared when the ECM memory is erased.
• Diagnostic trouble codes
SELF DIAGNOSTIC RESULT MODE
Self Diagnostic Item
Regarding items detected in “SELF-DIAG RESULTS” mode, refer to
.
How to Erase DTC
With CONSULT
NOTE:
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 12 min-
utes and then turn it ON (engine stopped) again.
1.
Select “ENGINE” with CONSULT.
2.
Select “SELF-DIAG RESULTS”.
3.
Touch “ERASE”. (DTC in ECM will be erased)
Freeze Frame Data and 1st Trip Freeze Frame Data
Diagnostic test mode
Function
Self Diagnostic Result
Self-diagnostic results such as DTC can be read and erased quickly.*
Data Monitor
Input/Output data in the ECM can be read.
Work support
This mode enables a technician to adjust some devices faster and more accurately by following
the indications on the CONSULT unit.
Active Test
Diagnostic Test Mode in which CONSULT drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.
ECU Identification
ECM part number and homologation number can be read.
Item
*
Unit
Remarks
CONSULT screen terms
Full spell
GDI - Fuel Rail Pressure
GDI - Fuel Rail Pressure
bar
FUEL RAIL PRESSURE
SETPOINT
Fuel rail pressure set-point
bar
ENG OIL TEMP
Oil temperature - engine
°
C
ENGINE STATUS
Engine status
—
• Ignition ON and engine stopped.
• engine driven
• Engine Stalled
• engine autonomous
IVT CONTROL SOL VALVE
POSITION SETPOINT
Intake valve timing control solenoid
valve position set-point
°
Crk
IVT CONTROL SOL VALVE
POSITION
Intake valve timing control solenoid
valve position
°
Crk
IVT CONTROL SOL VALVE
PWM
Intake valve timing control solenoid
valve pulse width modulation
%
EVT CONTROL SOL VALVE
PWM
Exhaust valve timing control solenoid
valve pulse width modulation
%
EVT CONTROL SOL VALVE
POSITION
Exhaust valve timing control solenoid
valve position
°
Crk
EVT CONTROL SOL VALVE
POSITION SETPOINT
Exhaust valve timing control solenoid
valve position set-point
°
Crk
ECH-48
< SYSTEM DESCRIPTION >
[HRA2DDT]
DIAGNOSIS SYSTEM (ECM)
COMPARE CAMSHAFT PO-
SITION AND EEPROM
Compare exhaust camshaft and electri-
cally erasable programmable read-only
memory
—
• NO VALUE
• MATCH
Camshaft_crankshaft syn-
chronization state
Camshaft/crankshaft synchronization
state
—
• not synchronized
• SYNCED
CRANKSHAFT SYNCHRO-
NIZATION
Crankshaft synchronization
—
• NOT
• OK
CRANKSHAFT SYNCHRO-
NIZATION COUNTER
Crankshaft synchronization counter
—
INT MANI PRES
Intake manifold pressure
mbar
FILTERED EVT CONTROL
SOL VALVE POSITION
Filtered exhaust valve timing control so-
lenoid valve position
°
Crk
ENG COOLANT TEMP
Engine coolant temperature
°
C
Intake manifold temperature
Intake manifold temperature
°
C
BOOST PRESSUR
Boost pressure
mbar
CALCULATED MANIFOLD
PRESSURE
Calculated manifold pressure
hpa
OPENING ANGLE CYLIN-
DER 3
Opening angle cylinder 3
°
Crk
INTAKE AIR TEMPERA-
TURE SENSOR VOLTAGE
Intake air temperature sensor voltage
V
AMOUNT OF AIR INTO CYL-
INDER
Amount of air into cylinder
kg/h
MANIFOLD PRESSURE
VALUE FROM MODEL
Manifold pressure value from model
hpa
MANIFOLD PRESSURE
VALUE FROM SENSOR
Manifold pressure from sensor
hpa
INTAKE MANIFOLD PRES-
SURE SENSOR VOLTAGE
Intake manifold pressure sensor voltage
V
MOTOR FAN REQUEST 7
Motor fan requests 7
—
• FAN 2 CAN N/REQUEST
• FAN 2 CAN REQUEST
MOTOR FAN REQUEST 6
Motor fan requests 6
—
• FAN 1 CAN N/REQUEST
• FAN 1 CAN REQUEST
MOTOR FAN REQUEST 5
Motor fan requests 5
—
• FAN 2 N/REQUEST FROM A/T
• FAN 2 REQUEST FROM A/T
MOTOR FAN REQUEST 4
Motor fan requests 4
—
• FAN 1 N/REQUEST FROM A/T
• FAN 1 REQUEST FROM A/T
MOTOR FAN REQUEST 3
Motor fan requests 3
—
• FAN 2 N/REQUEST FROM A/C
• FAN 2 REQUEST FROM A/C
MOTOR FAN REQUEST 2
Motor fan requests 2
—
• FAN 1 N/REQUEST FROM A/C
• FAN 1 REQUEST FROM A/C
MOTOR FAN REQUEST 1
Motor fan requests 1
—
• FAN 2 N/REQUEST FROM ECM
• FAN 2 REQUEST FROM ECM
MOTOR FAN REQUEST 0
Motor fan requests 0
—
• FAN 1 N/REQUEST FROM ECM
• FAN 1 REQUEST FROM ECM
CURRENT GEAR POSITION
Current gear position
—
ENGINE COOLANT TEM-
PERATURE SEN VOLTAGE
Engine coolant temperature sensor volt-
age
V
SEN SUPPLY N-1 VOL
Sensors supply voltage 1
mV
THROTTLE VALVE POSI-
TION 1
Throttle valve position 1
%
Item
*
Unit
Remarks
CONSULT screen terms
Full spell
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