Qashqai J11. Engine control system (HRA2DDT)

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SR and SB section of
this Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery and wait at least three minutes before performing any service.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000010506344

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc to prevent damage to
windshield.

Precautions for Removing Battery Terminal

INFOID:0000000010506181

• With the adoption of Auto ACC function, ACC power is automatically supplied by operating the intelligent key

or remote keyless entry or by opening/closing the driver side door. In addition, ACC power is supplied even
after the ignition switch is turned to the OFF position, i.e. ACC power is supplied for a certain fixed time.

PIIB3706J

ECH-8

< PRECAUTION >

[HRA2DDT]

PRECAUTIONS

• When disconnecting the 12V battery terminal, turn off the ACC

power before disconnecting the 12V battery terminal, observing
“How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignition
switch is turned OFF and ignition power supply is stopped. If the
battery terminal is disconnected before ECU stops, accidental DTC
detection or ECU data damage may occur.

• For vehicles with the 2-batteries, be sure to connect the main bat-

tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be detected.

• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

NOTE:
The removal of 12V battery may cause a DTC detection error.

HOW TO DISCONNECT 12V BATTERY TERMINAL

Disconnect 12V battery terminal according to Instruction 1 or Instruction 2 described below.
For vehicles parked by ignition switch OFF, refer to Instruction 2.

INSTRUCTION 1

Open the hood.

Turn key switch to the OFF position with the driver side door opened.

Get out of the vehicle and close the driver side door.

Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse
of the specified time.

CAUTION:

While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.

Remove 12V battery terminal.

CAUTION:

After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.

INSTRUCTION 2 (FOR VEHICLES PARKED BY IGNITION SWITCH OFF)

Unlock the door with intelligent key or remote keyless entry.
NOTE:
At this moment, ACC power is supplied.

Open the driver side door.

Open the hood.

Close the driver side door.

Wait at least 3 minutes.

CAUTION:

While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.

Remove 12V battery terminal.

CAUTION:

After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.

Precaution for Stop/Start System Service

INFOID:0000000010506596

CAUTION:

SEF289H

D4D engine

: 20 minutes

HRA2DDT

: 12 minutes

K9K engine

: 4 minutes

M9R engine

: 4 minutes

R9M engine

: 4 minutes

V9X engine

: 4 minutes

PRECAUTIONS

ECH-9

< PRECAUTION >

[HRA2DDT]

ECH

When performing an inspection and its related work with the engine at idle, always turn the stop/start
OFF switch ON or open the hood to release the stop/start system.

On Board Diagnostic (OBD) System of Engine

INFOID:0000000010379001

The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.

CAUTION:

• Be sure to turn the ignition switch OFF and disconnect the battery negative cable before any repair

or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will
cause the MIL to light up.

• Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will

cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

• Certain systems and components, especially those related to OBD, may use a new style slide-lock-

ing type harness connector. For description and how to disconnect, refer to

PG-5, "Harness Connec-

tor"

• Be sure to route and secure the harnesses properly after work. The interference of the harness with

a bracket, etc. may cause the MIL to light up due to the short circuit.

• Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube

may cause the MIL to light up due to the malfunction of the fuel system, etc.

• Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM before

returning the vehicle to the customer.

General Precautions

INFOID:0000000010379002

• Always use a 12 volt battery as power source.
• Do not attempt to disconnect battery cables while engine is

running.

• Before connecting or disconnecting the ECM harness con-

nector, turn ignition switch OFF, wait 3 minutes and discon-
nect battery negative cable. Failure to do so may damage the
ECM because battery voltage is applied to ECM even if igni-
tion switch is turned OFF.

• Before removing parts, turn ignition switch OFF and then dis-

connect battery negative cable.

• Do not disassemble ECM.

• When connecting or disconnecting pin connectors into or

from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM pin
terminal, when connecting pin connectors.

• Securely connect ECM harness connectors.

A poor connection can cause an extremely high (surge) volt-
age to develop in coil and condenser, thus resulting in dam-
age to IC's.

• Keep engine control system harness at least 10cm (4 in) away

from adjacent harness, to prevent engine control system mal-
functions due to receiving external noise, degraded operation
of IC's, etc.

• Keep engine control system parts and harness dry.
• Even a slight leak in the air intake system can cause serious incidents.
• Do not shock or jar the crankshaft position sensor.

SEF289H

SEF291H

ECH-10

< PRECAUTION >

[HRA2DDT]

PRECAUTIONS

• When measuring ECM signals with a circuit tester, never allow

the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.

• Do not use ECM ground terminals when measuring input/out-

put voltage. Doing so may result in damage to the ECM's tran-
sistor. Use a ground other than ECM terminals, such as the
ground.

• Do not disassemble fuel pump.

If NG, take proper action.

• Do not disassemble fuel injector.

If NG, replace fuel injector.

• Do not depress accelerator pedal when staring.
• Immediately after staring, do not rev up engine unnecessarily.
• Do not rev up engine just prior to shutdown.

• When installing C.B. ham radio or a mobile phone, be sure to

observe the following as it may adversely affect electronic
control systems depending on installation location.

- Keep the antenna as far as possible from the electronic con-

trol units.

- Keep the antenna feeder line more than 20 cm (8 in) away

from the harness of electronic controls.
Do not let them run parallel for a long distance.

- Adjust the antenna and feeder line so that the standingwave

radio can be kept smaller.

- Be sure to ground the radio to vehicle body.

SEF348N

SEF709Y

SEF708Y

ECH-12

< SYSTEM DESCRIPTION >

[HRA2DDT]

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000010379004

ENGINE ROOM COMPARTMENT

Battery mounting bracket assembly

No.

Component

Reference

IPDM E/R

IPDM E/R activates the internal control circuit to perform the relay
ON-OFF control according to the input signals from various sen-
sors and the request signals received from control units via CAN
communication.
Refer to

PCS-5, "Component Parts Location"

for detailed installa-

tion location.

Turbocharger bypass valve control solenoid valve

ECH-20, "Turbocharger bypass valve control solenoid valve"

Turbocharger wastegate control solenoid valve

ECH-20, "Turbocharger wastegate control solenoid valve"

EVAP canister purge volume control solenoid valve

ECH-18, "EVAP Canister Purge Volume Control Solenoid Valve"

Alternator

CHG-6, "Alternator"

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COMPONENT PARTS

ECH-13

< SYSTEM DESCRIPTION >

[HRA2DDT]

ECH

ENGINE COMPARTMENT

Intake manifold pressure sensor

ECH-19, "Intake Manifold Pressure Sensor"

Electric throttle control actuator

ECH-16, "Electric Throttle Control Actuator"

Turbocharger boost sensor (with intake air temperature
sensor)

ECH-20, "Turbocharger Boost Sensor"

Hood switch

ECH-18, "Hood Switch"

Reverse / neutral position switch

It detects that the transmission is in reverse and neutral.

ECM

ECH-16, "ECM"

Engine restart bypass relay

ECH-17, "Engine Restart Bypass Relay"

No.

Component

Reference

No.

Component

Reference

Ignition coil

ECH-18, "Ignition Coil"

Intake valve timing control solenoid valve

ECH-19, "Intake Valve Timing Control Solenoid Valve"

Fuel injector

ECH-18, "Fuel Injector"

Engine oil pressure control solenoid valve

—

Engine oil pressure sensor

—

Thermostat heater control solenoid valve

ECH-20, "Thermostat Heater Control Solenoid Valve"

JSBIA4854ZZ

ECH-14

< SYSTEM DESCRIPTION >

[HRA2DDT]

COMPONENT PARTS

BODY COMPARTMENT

Knock sensor

ECH-19, "Knock Sensor"

Fuel rail pressure sensor

ECH-18, "Fuel Rail Pressure Sensor"

Crankshaft position sensor

ECH-16, "Crankshaft Position Sensor"

Engine coolant temperature sensor

ECH-17, "Engine Coolant Temperature Sensor"

Engine coolant bypass valve control solenoid valve

ECH-17, "Engine Coolant Bypass Valve Control Solenoid Valve"

Camshaft position sensor

ECH-15, "Camshaft Position Sensor"

Exhaust valve timing control position sensor

ECH-18, "Exhaust Valve Timing Control Position Sensor"

High pressure fuel pump

ECH-18, "High Pressure Fuel Pump"

Heated oxygen sensor 2

ECH-18, "Heated Oxygen Sensor 2"

Exhaust valve timing control solenoid valve

ECH-18, "Exhaust Valve Timing Control Solenoid Valve"

Heated oxygen sensor 1

ECH-18, "Heated Oxygen Sensor 1"

No.

Component

Reference

Radiator assembly

Behind front fender protector LH

Instrument lower panel

Periphery of pedals

Behind of glove box assembly

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COMPONENT PARTS

ECH-15

< SYSTEM DESCRIPTION >

[HRA2DDT]

ECH

Accelerator Pedal Position Sensor

INFOID:0000000010379005

The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signals to the ECM.

ASCD Steering Switch

INFOID:0000000010471137

ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.

Camshaft Position Sensor

INFOID:0000000010471148

The camshaft position (CMP) sensor senses the retraction with camshaft to identify a particular cylinder. The
camshaft position sensor senses the piston position. When the crankshaft position (CKP) sensor system
becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing
timing of cylinder identification signals. The sensor consists of a permanent magnet and Hall IC.

Clutch Pedal Position Switch

INFOID:0000000010379006

Clutch switch signal is applied to the ECM through the clutch pedal position switch when the clutch pedal is
depressed.

Clutch Interlock Switch

INFOID:0000000010471128

When the clutch pedal is depressed, the clutch interlock switch turns ON and the clutch interlock switch signal
is sent to the ECM. The ECM judges the clutch pedal conditions via the signal (ON or OFF).

No.

Component

Reference

EVAP canister

EVAP canister stores the generated fuel vapors in the sealed fuel
tank to activated charcoals of EVAP canister when the engine is
not operating or when refueling to the fuel tank.

Refrigerant pressure sensor

ECH-19, "Refrigerant Pressure Sensor"

Fuel pump

ECH-19, "Fuel Pump"

ASCD steering switch

ECH-15, "ASCD Steering Switch"

Combination meter

•

ECH-19, "Malfunction Indicator Lamp"

•

ECH-19, "Stop/Start Indicator Lamp"

Cooling fan resistor

ECH-16, "Cooling Fan Resistor"

Cooling fan

ECH-16, "Cooling Fan"

Relay box

—

Fuse block (J/B)

—

Stop/start OFF switch

ECH-20, "Stop/Start OFF Switch"

Clutch interlock switch

ECH-15, "Clutch Interlock Switch"

Clutch pedal position switch

ECH-15, "Clutch Pedal Position Switch"

Accelerator pedal position sensor

ECH-15, "Accelerator Pedal Position Sensor"

Stop lamp switch

ECH-19, "Stop Lamp Switch"

DC/DC converter

ECH-16, "DC/DC Converter"

PBIB1741E

ECH-16

< SYSTEM DESCRIPTION >

[HRA2DDT]

COMPONENT PARTS

Cooling Fan

INFOID:0000000010379007

Cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Refer to

ECH-31, "COOLING FAN CONTROL : System Description"

for cooling fan operation.

Cooling Fan Resistor

INFOID:0000000010503741

Cooling Fan Resister is installed to the power circuit of Cooling Fan Motor and switches cooling fan speed
between LOW and HIGH.
When Cooling Fan Motor is rotated at LOW speeds, power is supplied to the cooling fan via Cooling Fan
Resistor.

Crankshaft Position Sensor

INFOID:0000000010379008

The crankshaft position (CKP) sensor is located on the cylinder block rear housing facing the gear teeth (cogs)
of the signal plate. The ECM receives the voltage signal and detects the function of the engine revolution.
The crankshaft position sensor also senses the piston position.

DC/DC Converter

INFOID:0000000010471141

The DC/DC converter is installed at the behind of the glove box
assembly and supplies power to the electrical equipment.
This converter is connected to ECM via the engine communication
line and includes an internal voltage converter. When restarting the
vehicle from the stop/start system operating condition, the voltage
converter boosts the voltage conveyed from the battery and provides
stable power to the electrical equipment to prevent reset from occur-
ring. For further details, refer to

ECH-33, "STOP/START SYSTEM :

System Description"

ECM

INFOID:0000000010379009

The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.

Electric Throttle Control Actuator

INFOID:0000000010379010

OUTLINE

Electric throttle control actuator consists of throttle body, throttle valve, throttle control motor and throttle posi-
tion sensor.

THROTTLE CONTROL MOTOR

The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The current open-
ing angle of the throttle valve is detected by the throttle position sensor. The throttle position sensor provides

Clutch pedal

Clutch interlock switch

Released

OFF

Depressed

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JPBIA5624ZZ

Qashqai J11. Engine control system (HRA2DDT) - part 1