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 

CHG-8, "ENER-

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 

ECH-19, "Stop/

Start Indicator Lamp"

.) 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

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[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 

Description"

.)

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-

TEM : System Description"

.)

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 

BRC-150, "System Description"

.)

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 

CHG-8, "ENERGY MANAGE-

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

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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

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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"

, about CAN communication for

detail.

JSBIA5004GB

OPERATION

ECH-43

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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 >

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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 >

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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 

ECH-71, "DTC Index"

.

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