Mazda 6. Manual - part 16

COOLING SYSTEM 

E–7

E

WATER PUMP

A6E363015010T01

Structure

•

The water pump body is made of aluminum alloy for weight reduction.

•

The impeller is built into the cylinder block and the water pump is not seviceable and must be replaced as a unit 
if faulty.

•

The water pump is driven by the front drive belt. (sirpentain type)

•

.

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AME3602N006

1

Water pump pulley

2

Water pump body

F–1

F

F

FUEL AND EMISSION CONTROL SYSTEMS

ABBREVIATIONS .................................................. F-2

ABBREVIATIONS ................................................ F-2

OUTLINE ................................................................ F-3

OUTLINE OF CONSTRUCTION ......................... F-3
FEATURES .......................................................... F-3
SPECIFICATIONS ............................................... F-3
CONTROL SYSTEM DIAGRAM .......................... F-4
CONTROL SYSTEM WIRING DIAGRAM............ F-6

INTAKE-AIR SYSTEM.......................................... F-13

INTAKE-AIR SYSTEM OUTLINE ...................... F-13
INTAKE-AIR SYSTEM STRUCTURAL VIEW.... F-14
VARIABLE AIR DUCT (VAD) SYSTEM 

OUTLINE (L3) ................................................. F-14

VARIABLE AIR DUCT (VAD) SHUTTER VALVE 

DESCRIPTION (L3) ........................................ F-15

VARIABLE AIR DUCT (VAD) SOLENOID VALVE 

DESCRIPTION (L3) ........................................ F-16

VARIABLE AIR DUCT (VAD) CHECK VALVE 

(ONE-WAY) DESCRIPTION (L3) ................... F-16

FUEL SYSTEM ..................................................... F-17

FUEL SYSTEM OUTLINE ................................. F-17
FUEL SYSTEM STRUCTURAL VEW................ F-18
FUEL PUMP UNIT DESCRIPTION ................... F-19

EXHAUST SYSTEM ............................................. F-20

EXHAUST SYSTEM OUTLINE.......................... F-20
EXHAUST SYSTEM STRUCTURAL VIEW....... F-21

EMISSION SYSTEM............................................. F-22

 OUTLINE .......................................................... F-22
EMISSION SYSTEM STRUCTURAL VIEW ...... F-23
PULSATION REDUCE CHAMBER 

DESCRIPTION ............................................... F-24

THREE-WAY CATALYTIC CONVERTER (TWC) 

DESCRIPTION ............................................... F-24

CONTROL SYSTEM............................................. F-25

OUTLINE ........................................................... F-25
STRUCTURAL VIEW......................................... F-28
BLOCK DIAGRAM ............................................. F-30
CONTROL DEVICES AND CONTROL 

RELATIONSHIP CHART ................................ F-32

CAMSHAFT POSITION (CMP) SENSOR.......... F-34
CRANKSHAFT POSITION (CKP) SENSOR...... F-34
IDLE AIR CONTROL (IAC) ................................ F-35
VARIABLE AIR DUCT (VAD) CONTROL .......... F-35
VARIABLE INTAKE-AIR CONTROL SYSTEM .. F-35
VARIABLE TUMBLE CONTROL SYSTEM 

(VTCS) ............................................................ F-35

VARIABLE VALVE TIMING CONTROL............. F-36
FUEL INJECTION CONTROL ........................... F-36
A/C CUT-OFF CONTROL.................................. F-36
ELECTRIC FAN CONTROL .............................. F-37
CONTROLLER AREA NETWORK (CAN) ......... F-38

ON-BOARD DIAGNOSTIC................................... F-40

OUTLINE ........................................................... F-40
CONTROL DEVICES AND MONITORING 

SYSTEM RELATIONSHIP CHART ................ F-40

DIAGNOSTIC TEST MODE............................... F-41
DTC.................................................................... F-44
PID/DATA MONITOR AND RECORD ............... F-50

SIMULATION TEST ........................................... F-52
KOEO/KOER SELF-TEST ................................. F-52

F–2

ABBREVIATIONS 

ABBREVIATIONS

A6E390118881T01

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ABBREVIATIONS

AAS

Air adjust screw

CAN

Controller area network

DC

Drive cycle

FFD

Freeze frame data

KOEO

Key on, engine off

KOER

Key on, engine running

OCV

Oil control valve

PC

Pending code

PID

Parameter identification

TCS

Traction control system

VAD

Variable air duct

VIS

Variable intake-air system

VLIM

Variable length intake manifold

VTCS

Variable tumble control system

OUTLINE 

F–3

F

OUTLINE OF CONSTRUCTION

A6E390218881T01

•

The Mazda6 (GG) has been equipped with the new engine (L series). The features of the L series engines are 
as follows.

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FEATURES

A6E390218881T02

System simplification

•

Controller area network has been adopted.

•

Mechanical returnless fuel system has been adopted.

Improved engine performance

•

Variable air duct (VAD) control system has been adopted to improve engine performance at high engine speed. 
(L3 engine)

•

Variable valve timing control system has been adopted to improve engine performance. (L3 engine)

•

Variable intake-air system (VIS) has been adopted to improve engine torque characteristics and combustion 
efficiency. (L3 engine)

Improved emission performance

•

Variable valve timing control system has been adopted. (L3 engine)

•

Variable tumble control system (VTCS) has been adopted.

•

New fuel injection timing control has been adopted.

•

Manifold absolute pressure correction has been adopted to IAC control and fuel injection control.

Weight reduction

•

Resin fuel tank has been adopted.

Improved serviceability

•

Nonadjustable ignition timing has been adopted.

•

Nonadjustable IAC has been adopted.

•

Quick release connectors have been adopted on all joints of fuel lines.

•

KOEO/KOER self-test function has been adopted.

•

Pending code storage process has been changed.

•

MIL illumination conditions for the second drive cycle type have been changed.

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SPECIFICATIONS

A6E390218881T03

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OUTLINE

Item

L8, LF, L3

Air cleaner element

Type

Paper element (oil permeated)

IAC valve

Type

Duty control

Fuel injector

Type

Hi-ohmic

Type of fuel delivery

Top-feed

Type of drive

Voltage

Pressure regulator

Regulating pressure
(kPa {kgf/cm

2

, psi})

440 {4.5, 64}

Fuel tank

Capacity
(L {US qt, lmp qt})

64 {68, 56}

Fuel

Specification

Unleaded (RON 95 or above)

Catalyst

Type

TWC (monolithic)

EGR control

Type

Stepping motor type

Evaporative emission control 
system

Type

Canister type

PCV system

Type

Closed type