Mazda2 Facelift. Manual — part 5

01

Engine

01 Engine

Diesel Engine

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Injectors . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2
Intake-air System. . . . . . . . . . . . . . . . . . . . . . . . .4

Parts Location . . . . . . . . . . . . . . . . . . . . . . . . .4

Exhaust Gas Recirculation System . . . . . . . . . . . . . . . . ...5

EGR Valve . . . . . . . . . . . . . . . . . . . . . . . . . ..5
EGR Valve Position Sensor . . . . . . . . . . . . . . . . . . . 7
EGR Cooler. . . . . . . . . . . . . . . . . . . . . . . . . .8
Intake Shutter Valve. . . . . . . . . . . . . . . . . . . . . . 8
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . .9

Glow Plug Control Module. . . . . . . . . . . . . . . . . . . . 10

Table of Contents 01

Service Training Mazda2 Facelift

Engine Diesel

Engine

General

•

The 1.4 MZ-CD Diesel engine of the Mazda2 Facelift basically has been carried over
from the previous Mazda2. In order to comply with Euro 4 emission legislation the engine
has been upgraded as follows:

–

new injectors

–

revised intake air system

–

revised EGR (Exhaust Gas Recirculation) system

–

revised PCM (Powertrain Control Module)

M2FL_01001

Service Training Mazda2 Facelift

01-1

Diesel Engine

Engine

Injectors

•

The injectors have been basically carried over from the previous 1.4 MZ-CD Diesel
engine. They are piezo-type injectors, which consist of nozzle body with nozzle needle,
hydraulic servo system and piezo actuator.

•

Since the Diesel engine of the Mazda2 Facelift meets Euro 4 emission regulations, it
uses injectors with a different spray hole diameter. In order to distinguish between
injectors for Euro 3 vehicles and injectors for Euro 4 vehicles, an injector classification
code (“E3” for Euro 3 vehicles and “E4” for Euro 4 vehicles) is stamped onto the injector
shaft.

M2FL_01002

1 Injector

2 Injector

classification

code

NOTE: Never disconnect any connectors of the piezo-type injectors (such as injector

connectors, PCM connectors etc.) while the engine is running. If there is an open
circuit at an injector, the corresponding piezo actuator may remain extended for a
certain time so that the nozzle needle stays open. This would result in continuous
injection and hence in engine damage.

01-2 Service

Training

Mazda2

Facelift