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Nissan Qashqai J11. Manual - part 467

COMPONENT PARTS

EC9-23

< SYSTEM DESCRIPTION >

[R9M]

EC9

Malfunction Indicator Lamp

INFOID:0000000010308959

The malfunction indicator Lamp (MIL) is located on the combination
meter. The MIL will illuminate when the ignition switch is turned ON
without the engine running (bulb check).
When the engine is started, the MIL should turn OFF. If the MIL
remains illuminated, the on board diagnostic system has detected an
engine system malfunction.

Information Display

INFOID:0000000010308960

The operation mode of the ASCD and speed limiter are indicated on the information display in the combination
meter.
ECM transmits the status signal to the combination meter via CAN communication according to ASCD and
speed limiter operation.

DC/DC Converter

INFOID:0000000010308962

The DC/DC converter is installed at the back 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

EC9-39, "STOP/START SYSTEM :

System Description (M/T models)"

EC9-47, "STOP/START SYS-

TEM : System Description (CVT models)"

Engine Restart Relay

INFOID:0000000010308963

The engine restart relay is installed in the relay box and controlled by ECM when restarting the engine during
the stop/start system operation.

Engine Restart Bypass Control Relay

INFOID:0000000010308964

The engine restart bypass control relay is controlled by ECM and controls the engine restart bypass relay.

Engine Restart Bypass Relay

INFOID:0000000010308965

The engine restart bypass relay reduces battery voltage drop right
after the starter motor activation at an engine restart by switching the
electric circuit of the starter motor. For details, refer to

EC9-39,

"STOP/START SYSTEM : System Description (M/T models)"

EC9-47, "STOP/START SYSTEM : System Description (CVT mod-
els)"

Hood Switch

INFOID:0000000010308970

Hood switch is located around radiator core support. Hood switch detects open/close condition of hood and
input the hood switch signal to IPDM E/R.

JPNIA1882ZZ

JSBIA4574ZZ

JSBIA1994ZZ

EC9-24

< SYSTEM DESCRIPTION >

[R9M]

COMPONENT PARTS

Stop/Start Indicator Lamp

INFOID:0000000010308971

The stop/start indicator lamp is located on the combination meter.
The stop/start indicator lamp turns ON when the stop/start system is
operating.
When a malfunction is detected in the stop/start system, the stop/
start indicator lamp blinks at a slow speed to alert the driver to the
malfunction. When a driver

′

s operation is judged as dangerous one

during stop/start system operation, the stop/start indicator lamp
blinks at a high speed.

Stop/Start indicator lamp status

*1: Only in models with M/T
*2: Engine is stalled after alert for 1.5 seconds.

Stop/Start OFF Switch

INFOID:0000000010308972

The stop/start OFF switch is mounted on the switch panel of the
driver side lower instrument panel. When the stop/start OFF switch
is pressed, the indicator lump turns ON and the stop/start system
can be deactivated.
For further details, refer to

EC9-57, "STOP/START SYSTEM :

Switch Name and Function"

JPBIA4266ZZ

System condition

Condition

Stop/start indicator lamp

Warning chime

Operate

Normal

Illuminate

—

Door (driver side) open

and seat belt released

High speed blinking

Sound

Hood open

High speed blinking

Sound

Fail-Safe

Starter motor operation
counter: too much

Slow speed blinking

—

Malfunction of stop/start
system

Slow speed blinking

—

JSBIA4078ZZ

SYSTEM

EC9-25

< SYSTEM DESCRIPTION >

[R9M]

EC9

SYSTEM

ENGINE CONTROL SYSTEM

ENGINE CONTROL SYSTEM : System Diagram

INFOID:0000000010308973

ENGINE CONTROL SYSTEM : Vacuum Hose Drawing

INFOID:0000000010308974

For vacuum hose drawing, refer to

EC9-404, "Vacuum Layout"

JSBIA5033GB

EC9-26

< SYSTEM DESCRIPTION >

[R9M]

SYSTEM

ENGINE CONTROL SYSTEM : System Description

INFOID:0000000010308975

ECM controls the engine by various functions.

ENGINE SPEED CONTROL

ENGINE SPEED CONTROL : System Description

INFOID:0000000010308976

SYSTEM DESCRIPTION

The engine speed control consists of the following functions:
• Curative anti-jerk
• Idle speed control
• Engine speed limitation
• Engine state

CURATIVE ANTI-JERK

This function aims to smooth the engine speed through torque corrections out of idle engine speed regulation.
The torque correction is made by the anti-jerk function to damp the engine speed vibrations caused by the
drive-line vibrations.

IDLE SPEED CONTROL

ECM calculates the engine idle speed set point and maintains the engine speed in order to follow the set point.
The engine idle speed set-point is computed for the following load and signal:
• Post treatment
- Diesel particulate filter
• Electric consumers
- Cooling fan
- Air heater (air conditioning system)

Function

Reference

Engine speed control

EC9-26, "ENGINE SPEED CONTROL : System Description"

Powertrain coordination control

EC9-27, "POWERTRAIN COORDINATION CONTROL : System
Description"

Turbocharger boost control

EC9-28, "TURBOCHARGER BOOST CONTROL : System De-
scription"

EGR system

EC9-28, "EGR SYSTEM : System Description"

Throttle control

EC9-29, "THROTTLE CONTROL : System Description"