fuel pump MAZDA 6 2002 Suplement User Guide

OUTLINE
F1–5
F1
11 Knock sensor
12 CKP sensor
13 CMP sensor
14 Fuel injector No.1
15 Fuel injector No.2
16 Fuel injector No.3
17 Fuel injector No.4
18 IAC valve
19 Oxygen sensor heater (front)
20 Oxygen sensor heater (rear)
21 A/C relay22 Cooling fan relay
23 Cooling fan relay
24 Cooling fan relay
25 TR switch
26 Fuel pump relay
27 Coil
28 Security light
29 Ignition switch
30 Main relay
31 TR switch
32 Starter relay

F1–8
OUTLINE
.
15 Fuel injector No.2
16 Fuel injector No.3
17 Fuel injector No.4
18 IAC valve
19 Oxygen sensor heater (front)
20 Oxygen sensor heater (rear)
21 A/C relay22 Cooling fan relay
23 Cooling fan relay
24 Cooling fan relay
25 Cooling fan relay
26 Fuel pump relay
27 Ignition switch
28 Main relay
1AA
1Q
1Z
1AC
1K
1C1D 4M4R 4N4K 4H4E
4T 4C4U 1AD1B 1A 2AB4X
39
38
37
35
36
33
31
32
40
44
43
41
42
34
29
30
A6E39022004
29 Generator
30 Refrigerant pressure switch (middle)
31 PSP switch
32 Blower motor
33 Refrigerant pressure switch (high and low)
34 A/C switch
35 Brake switch
36 Brake light37 Ignition coil
38 Generator
39 Purge solenoid valve
40 VAD control solenoid valve
41 EGR valve
42 Variable tumble control solenoid valve
43 VIS control solenoid valve
44 OCV

FUEL SYSTEM
F1–9
F1
End Of Sie
OUTLINEA6E391201006201•The fuel system is essentially carried over from that of the current Mazda6 (GG), except for the following. (See
Mazda6 Training Manual 3359-1*-02C.)
—A saddle type fuel tank has been adopted.
—A fuel pump (transfer) for fuel transmission has been added.
End Of Sie
STRUCTURAL VIEWA6E391201006202
.
End Of Sie
FUEL SYSTEM
7
5
4
3
6
1
2
A6E39122001
1 Fuel gauge sender sub-unit
2 Quick release connector (fuel tank side, transfer
hose part)
3 Non-return valve4 Quick release connector (fuel tank side, main fuel
pipe part)
5 Fuel tank
6 Fuel pump unit
7 Filler cap

F1–10
FUEL SYSTEM
SYSTEM DIAGRAMA6E391201006203
.
End Of Sie
FUEL PUMP (TRANSFER)A6E391213350201Function
•The fuel tank for 4WD is saddle type. Fuel in the fuel gauge sender sub-unit side (right side) is pumped to the
left side of the fuel tank using the fuel pump (transfer).
Structure
•The fuel pump (transfer) is integrated into the fuel pump unit and it cannot be separately disassembled.
•The fuel pump (transfer) is composed of a relief valve and fuel jet pump.
87
5
4
3
6
1
2
:
9
10
A6E39122002
1 Filler cap
2 Pressure regulator
3 Fuel pump (transfer)
4 Fuel filter (high-pressure)
5Fuel pump6 Fuel filter (low-pressure)
7 Fuel pump unit
8 Pulsation damper
9 Fuel injector
10 Fuel flow

FUEL SYSTEM
F1–11
F1
Operation
•The fuel jet pump (venturi) is installed in the return passage from the pressure regulator, and fuel in the fuel
tank is pumped to the left side from the right side using the vacuum generated in the passage.
•When the return fuel pressure exceeds a specified value, the relief valve is opened. The relief valve delivers the
return fuel directly to the fuel tank. In this way, pressure of the return fuel passing through the fuel jet pump is
kept constantly below the specified value.
.
End Of Sie
9
8
7
54
3
10
14
13
11
12
6
1
2
:
:
2
15
A6E39122003
1 Fuel pump unit
2 Fuel pump (transfer)
3 Fuel injector
4 Fuel tank (left side)
5 Fuel tank (right side)
6 Relief valve
7 Discharge outlet
8 From pressure regulator9 From fuel tank (right side)
10 Fuel jet pump
11 To fuel tank (left side)
12 Fuel jet pump
13 From fuel tank (left side)
14 Fuel flow
15 Pumped fuel flow

F1–14
CONTROL SYSTEM
OUTLINEA6E394018880201•The control system is essentially carried over from the current Mazda6 (GG), except for the following. (See
Mazda6 Training Manual 3359-1*-02C.)
Vehicle Adoption
4WD ATX model
•TCM has been adopted. Due to this the PCM terminal of ATX device has been replaced to TCM. The ATX
device information which is needed by the fuel and emission control systems is communicated to the PCM by
the controller area network (CAN).
Unleaded (RON 90 or above) model
•BARO sensor has been eliminated. Due to this the BARO factor for purge control has been eliminated.
Input Device
×:Applicable
—: Not applicable
*
1: For MTX model
*2: With Immobilizer system
CONTROL SYSTEM
Item SignalMazda6 (GG, GY)
Remark for new model
4WD ATX Unleaded
(RON 90 or
above)Current
model
MAF/IAT sensor MAF and IAT×Same as current model
TP sensor TP×Same as current model
MAP sensor MAP×Same as current model
ECT sensor ECT×Same as current model
CMP sensorCylinder
identification×Same as current model
CKP sensor Engine revolution×Same as current model
Knock sensor Knocking×Same as current model
HO2S (Front, Rear)Oxygen
concentration×Same as current model
BARO sensor BARO×—×Same as current model
Neutral switch*
1Load/no load
distinction×Same as current model
Clutch switch*
1Load/no load
distinction×Same as current model
Brake switchBrake pedal
condition×Same as current model
PSP switchP/S oil pump load
condition×Same as current model
VSS Vehicle speed—×—
A/C switch, refrigerant
pressure switch (high,
low pressure)A/C operational×Same as current model
Refrigerant pressure
switch (middle
pressure)A/C compressor load×—×Same as current model
Battery Battery voltage×Same as current model
Generation voltage
(Generator terminal P)Generation voltage×Same as current model
Immobilizer unit*
2Immobilizer system
communication×—×Same as current model

CONTROL SYSTEM
F1–15
F1
Output Device
×:Applied
—: Not applied
* : For L3 engine only
End Of Sie
Item SignalMazda6 (GG, GY)
Remark for new model
4WD ATX Unleaded
(RON 90
or above)Current
model
IAC valve IAC×Same as current model
VIC solenoid valve* VIC×—×Same as current model
Variable tumble control
solenoid valveVTCS×Same as current model
Oil control valve (OCV)*Variable valve
timing control×—×Same as current model
Fuel injectorFuel injection
control×Same as current model
Fuel pump relayFuel pump
control×Same as current model
Ignition coil ESA control×Same as current model
EGR valve EGR control×Same as current model
Purge solenoid valve Purge control×Same as current model
BARO factor for Purge control has been
eliminated.
Heated oxygen sensor
heater
(Front, rear)O2S heater
control×Same as current model
Field coil
(Generator terminal D)Generator
control×Same as current model
Cooling fan relayElectric fan
control×Same as current model
A/C relayA/C cut-off
control×Same as current model
Controller area network
(CAN)Information
function×Same as current model
TCM (ATX) information have been
adopted for 4WD ATX model.

F1–18
CONTROL SYSTEM
*1: For MTX model
*2: For 2WD ATX model
*3: For L3 engine
End Of Sie
1 MAF/IAT sensor
2 TP sensor
3 MAP sensor
4 CMP sensor
5 CKP sensor
6 ECT sensor
7 Knock sensor
8 HO2S (front, rear)
9 PSP switch
10 Vehicle speedometer sensor
11
Clutch switch*
1
12
Neutral switch*1
13
TR switch*2
14 Brake switch
15 A/C switch
16 Refrigerant pressure switch
17 Generator (terminal P: generation voltage)
18 Battery
19
VAD control solenoid valve*
3
20 IAC valve
21
VIC solenoid valve*
3
22 Variable tumble control solenoid valve
23
OCV*
3
24 Fuel injector
25 Fuel pump relay
26 Ignition coil
27 Purge solenoid valve
28 EGR valve
29 Oxygen sensor heater (front, rear)
30 A/C relay
31 Cooling fan relay
32 Generator (terminal D: field coil)
33
VAD control*
3
34 IAC
35
VIC*
3
36 VTCS
37
Variable valve timing control*
3
38 Fuel injection control
39 Fuel pump control
40 Electronic spark advance (ESA) control
41 Purge control
42 EGR control
43 Oxygen sensor heater control
44 A/C cut-off control
45 Electrical fan control
46 Generator control

CONTROL SYSTEM
F1–19
F1
CONTROL DEVICE AND CONTROL RELATIONSHIP CHARTA6E394018880204Input devices
x: Applicable
*
1: For unleaded fuel (RON 90 or above) model
*2: For MTX model
*3: For 2WD ATX model
Component
IAT sensor x x x xxxx×
MAF sensor x xx xxxxx
TP sensor x x x x x x x x
MAP sensor x x
ECT sensor xx xxx xxxxx x
CMP sensor x x
CKP sensor xxxxxxxxxxxxx
Knock sensor x
Front HO2S x x
Rear HO2S x
BARO sensor*
1x
Neutral switch*
2xxxx
Clutch switch*
2xxxxx
TR switch*
3xxxxx
Brake switch
PSP switch x x x
VSS×
A/C switch, refrigerant
pressure switch (high,
low pressure)xxx××
Refrigerant pressure
switch (middle pressure)×
Battery voltage x x x×
Generator terminal P
(Generation voltage)xxx×
ABS/TCS HU/CM×
Coil×
Idle air control (IAC)Variable air duct (VAD)
controlVariable intake-air
control (VIC)Variable tumble
control system (VTCS)Variable valve timing controlFuel injection controlFuel pump controlElectronic spark advance
(ESA) controlPurge controlEGR controlFront HO2S heater controlRear HO2S heater controlA/C cut-off controlElectrical fan controlGenerator controlTraction controlImmobilizer system

F1–20
CONTROL SYSTEM
Output devices
×: Applicable
* : For L3 engine
End Of Sie
Component
IAC valve×
VAD control solenoid valve*×
VIC solenoid valve*×
Variable tumble control
solenoid valve×
Oil control valve (OCV)*×
Fuel injectors××
Fuel pump relay×
Ignition coil××
Purge solenoid valve×
EGR valve×
HO2S heaters××
A/C relay×
Cooling fan relay×
Generator (terminal D: field
coil)×
ABS/TCS HU/CM×
Idle air control (IAC)Variable air duct (VAD)
controlVariable intake-air
control (VIC)Variable tumble
control system (VTCS)Variable valve timing controlFuel injection controlFuel pump controlElectronic spark advance
(ESA) controlPurge controlEGR controlFront HO2S heater controlRear HO2S heater controlA/C cut-off controlElectrical fan controlGenerator controlTraction controlImmobilizer system