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