2002 MAZDA 6 battery

F2–44
INTAKE-AIR SYSTEM
End Of SieACCELERATOR PEDAL COMPONENT REMOVAL/INSTALLATIONA6E4010416002011. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
End Of Sie
ACCELERATOR PEDAL COMPONENT DISASSEMBLY/ASSEMBLYA6E4010416002021. Remove the accelerator pedal component. (See F2–44 ACCELERATOR PEDAL COMPONENT REMOVAL/
INSTALLATION.)
2. Disassemble in the order indicated in the table.
3. Assemble in the reverse order of removal.
4. Install the accelerator pedal component. (See
F2–44 ACCELERATOR PEDAL COMPONENT
REMOVAL/INSTALLATION.)
5. Adjust the accelerator position sensor. (See F2–
73 ACCELERATOR POSITION SENSOR
ADJUSTMENT.)
6. Adjust the idle switch. (See F2–71 IDLE SWITCH
ADJUSTMENT.)
End Of Sie
1 Accelerator position sensor connector
2 Idle switch connector
3 Pedal component
7.8—10.8 N·m
{80—110 kgf·m,
69—95 in·lbf}
3
1
2
A6E40102026
1 Idle switch
2 Accelerator position sensor
3 Accelerator pedal
3
12
1.57—2.35 N·m
{16.0—23.9 kgf·cm,
13.9—20.7 in·lbf}13.7—17.6 N·m
{1.4—1.7 kgf·m,
11—12 ft·lbf}
A6E40102027

FUEL SYSTEM
F2–45
F2
BEFORE REPAIR PROCEDUREA6E401201006203
Warning
•Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep
sparks and flames away from fuel.
•Fuel line spills and leads are dangerous. Fuel can ignite and cause serious injuries or death and
damage. Fuel can also irritate skin and eyes. To prevent this, always complete the following “Fuel
Line Safety Procedures”.
Fuel Line Safety Procedures
Note
•Fuel in the fuel system is under high pressure when the engine is not running.
1. Avoid fuel line spills and leaks by completing the following procedures.
(1) Remove the fuel-filler cap and release the pressure in the fuel tank.
(2) When disconnecting a fuel line hose, wrap a rag around it to protect against fuel leakage.
(3) Plug the hose after removal.
End Of Sie
AFTER REPAIR PROCEDUREA6E401201006204
Warning
•Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and
damage. When installing the fuel hose, observe “Fuel Hose Installation” described below.
Fuel Line Air Bleeding
Caution
•Continuously cranking the engine for over 30 s can damage the battery and the starter.
1. Continue cranking the engine for 30 s and stop for 5—10 s until the engine starts.
Fuel Hose Installation
1. Verify that there is no damage or deformation on the fuel hose and fuel pipe when installing.
End Of Sie
FUEL TANK REMOVAL/INSTALLATIONA6E401242110201
Warning
•Repairing a fuel tank that has not been properly steam cleaned can be dangerous. Explosion or
fire may cause death or serious injury. Always properly steam clean a fuel tank before repairing it.
•Fuel line spills and leakage are dangerous. Fuel can also irritate skin and eyes. To prevent this, do
not damage the sealing surface of the fuel gauge sender unit when removing or installing.
Caution
•Disconnecting/connecting the quick release connector without cleaning it may possibly cause
damage to the fuel pipe and quick release connector. Always clean the quick release connector
joint area before disconnecting/connecting using a cloth or soft brush, and make sure that it is
free of foreign material.
FUEL SYSTEM

F2–46
FUEL SYSTEM
1. Verify that vehicle is level.
2. Complete the “BEFORE REPAIR PROCEDURE”. (See F2–45 BEFORE REPAIR PROCEDURE.)
3. Disconnect the negative battery cable.
4. Remove the rear seat cushion.
5. Remove the service hole cover.
6. Remove the plastic fuel hose from the fuel gauge sender unit. (See F2–47 Plastic Fuel Hose Removal Note.)
(See F2–48 Plastic Fuel Hose Installation Note.)
7. Remove the fuel gauge sender unit connector.
8. Remove the fuel tank gauge cap. (See F2–47 Fuel Tank Gauge Cap Removal Note.)
9. Remove the fuel gauge sender unit. (See F2–48 Fuel Gauge Sender Unit Installation Note.)
10. Siphon the fuel from the fuel tank.
11. Remove in the order indicated in the table.
12. Install in the reverse order of removal.
13. Complete the “AFTER REPAIR PROCEDURE”. (See F2–45 AFTER REPAIR PROCEDURE.)
.
44—60
{4.4—6.2, 32—44}44—60
{4.4—6.2, 32—44} 44—60
{4.4—6.2, 32—44}
N·m {kgf·m, ft·lbf}
8.9—12.7 N·m
{90—130 kgf·cm,
79—112 in·lbf}
8.9—12.7 N·m
{90—130 kgf·cm,
79—112 in·lbf}
5
4
3
2
1
6
80—90
{8.2—9.1, 59—66}
R
PLASTIC
FUEL HOSE
FUEL GAUGE
SENDER UNITFUEL TANK
GAUGE CAP
SST
A6E40122025
1Joint hose
(See F2–48 Joint Hose Installation Note)
2Breather hose
(See F2–48 Breather Hose Installation Note)3 Fuel tank
4 Fuel-filler pipe
5 C-ring
6 Filler cap

F2–50
FUEL SYSTEM
NONRETURN VALVE INSPECTIONA6E401242270201
Note
•Nonreturn valve is integrated in the fuel tank. Therefore, before inspecting the nonreturn valve perform the
follwing:
1. Remove the fuel gauge sender unit. (See F2–45 FUEL TANK REMOVAL/INSTALLATION.)
2. Siphon the fuel from the fuel tank.
Note
•The nonreturn valve is normally closed by the spring force.
3. Verify that the nonreturn valve is closed.
•If it is stuck open, replace the fuel tank.
4. Verify that the nonreturn valve opens when pulled up by a finger.
•If it does not open, replace the nonreturn valve.
End Of Sie
FUEL FILTER COMPONENT REMOVAL/INSTALLATIONA6E4012348022011. Disconnect the negative battery cable.
2. Complete the “BEFORE REPAIR PROCEDURE”. (See F2–45 BEFORE REPAIR PROCEDURE.)
3. Remove in the order indicated in the table.
L.H.D.
R.H.D.
.
4. Install in the reverse order of removal.
5. Complete the “AFTER REPAIR PROCEDURE”.
(See F2–45 AFTER REPAIR PROCEDURE.)
6. Start the engine and verify that fuel does not leak
from the fuel system.
•If fuel leaks, reinstall the fuel filter.
End Of Sie
1
4
23
A6E40122010
1 Connector
2Fuel hose
3 Installation nut
4 Fuel filter body
4
1
2
3
A6E40122011

F2–52
FUEL SYSTEM
SEDIMENTOR WATER DRAININGA6E4012348022041. Disconnect the negative battery cable.
2. Complete the “BEFORE REPAIR PROCEDURE”. (See F2–45 BEFORE REPAIR PROCEDURE.)
3. Loosen the drain plug located at the bottom of the fuel filter.
4. Pump the priming pump and drain the water.
5. After all the water has been drained, tighten the drain plug.
6. Complete the “AFTER REPAIR PROCEDURE”. (See F2–45 AFTER REPAIR PROCEDURE.)
7. Reconnect the negative battery cable.
End Of Sie
SEDIMENTOR SWITCH INSPECTIONA6E401213840201
Note
•Perform the following test only when directed.
1. Disconnect the negative battery cable.
2. Complete the “BEFORE REPAIR PROCEDURE”. (See F2–45 BEFORE REPAIR PROCEDURE.)
3. Drain fuel from the fuel filter. (See F2–52 SEDIMENTOR WATER DRAINING.)
4. Remove the sedimentor switch.
5. Inspect for continuity of the sedimentor switch
using an ohmmeter.
•If as specified, inspect the following and carry
out the “Circuit Open/Short Inspection.”
•If not as specified, replace the sedimentor
switch.
Specification
6. Install the sedimentor switch.
7. Reconnect the negative battery cable.
8. Complete the “AFTER REPAIR PROCEDURE”.
(See F2–45 AFTER REPAIR PROCEDURE.)
Circuit Open/Short Inspection
1. Inspect the following wiring harnesses for open or
short (continuity check).
Open circuit
•If there is no continuity, the circuit is open.
Repair or replace the harness.
—Sedimentor switch terminal B (harness-
side) and GND.
—Sedimentor switch terminal A (harness-
side) and instrument cluster terminal 1C.
Short circuit
•If there is continuity, the circuit is shorted.
Repair of replace the harness.
—Sedimentor switch terminal A (harness-
side) and GND.
—Sedimentor switch terminal B (harness-
side) and power supply.
End Of Sie
Float Continuity
Up Yes
Down No
UP
DOWN
FLOATA
B
A6E40122015
1O 1M 1K 1I 1G 1E 1C 1A
1P 1N 1L 1J 1H 1F 1D 1B INSTRUMENT CLUSTER CONNECTOR
SEDIMENTOR SWITCH
HARNESS SIDE CONNECTOR
A
B
A6E40122016

FUEL SYSTEM
F2–53
F2
SUPPLY PUMP REMOVAL/INSTALLATIONA6E401213350201
Caution
•Fuel line spills and leakage on the parts are dangerous. Fuel can ignite and also deteriorate the
parts. To prevent this, always cover the mouths of the removed parts in the fuel system with rags
to soak up the fuel.
•To prevent the fuel injection pipe from clogging, be careful that foreign material has not entered
the pipe. Also, be sure to tighten the bolts with the specified tightening torque when installing the
fuel injection pipe.
•To prevent fuel leakage, follow the procedure indicated in the workshop manual when removing
and installing the fuel injector.
•The fuel injection pipe can be removed and reinstalled up to five times. Be sure to record in the
service record when removing and installing the fuel injection pipe. If removing it for the sixth
time, be sure to replace it with a new one.
1. Disconnect the negative battery cable.
2. Complete the “BEFORE REPAIR PROCEDURE”. (See F2–45 BEFORE REPAIR PROCEDURE.)
3. Remove in the order indicated in the table.
.
4. Install in the reverse order of removal.
5. Complete the “AFTER REPAIR PROCEDURE”.
(See F2–45 AFTER REPAIR PROCEDURE.)
Common Rail Installation Note
1. Temporarily tighten the common rail.
2. Temporarily tighten the injection pipes.
3. Fully tighten the injector side injection pipes, then tighten the common rail side.
Tightening torque
50—60 N·m {5—6 kgf·m, 37—44 ft·lbf}
4. Fully tighten the supply pump side and common rail side injection pipes.
Tightening torque
50—60 N·m {5—6 kgf·m, 37—44 ft·lbf}
5. Fully tighten the common rail.
Tightening torque
20—30 N·m {2.0—3.1 kgf·m, 15—22 ft·lbf}
End Of Sie
1 Injection pipe
2 Nozzle seal
3 Return fuel hose
4Common rail
(See F2–53 Common Rail Installation Note)
5Supply pump
(See B2–17 Supply Pump Pulley Removal Note)
19—25
{1.9—2.6, 14—18}19—25
{1.9—2.6,
14—18} 50—60
{5—6,
37—44}
50—60
{5—6, 37—44}
N·m {kgf·m, ft·lbf}
A
R
A
5
43
12
1
A6E40122033

F2–54
FUEL SYSTEM
SUPPLY PUMP INSPECTIONA6E401213350202
Caution
•The supply pump is sealed to maintain proper function. Special tools and testers are required
when disassembling the supply pump. Disassembling the supply pump without special tools and
testers will cause a malfunction.
•Consult an authorized DENSO parts distributor for repair if any of the following supply pump parts
are possibly malfunctioning.
1. Supply pump inner parts
2. Suction control valve
3. Fuel temperature sensor
End Of Sie
SUCTION CONTROL VALVE INSPECTIONA6E401213350203
Caution
•The supply pump is sealed to maintain proper function. Special tools and testers are required
when disassembling the supply pump. Disassembling the supply pump without special tools and
testers will cause a malfunction.
•Consult an authorized DENSO parts distributor for repair if suction control valve is possibly
malfunctioning.
Resistance Inspection
1. Disconnect the negative battery cable.
2. Disconnect the suction control valve connector.
3. Measure the resistance between the suction
control valve terminals using an ohmmeter.
•If not as specified, repair the supply pump.
(See F2–54 SUPPLY PUMP INSPECTION.)
•If as specified, carry out the “Circuit Open/
Short Inspection”.
Specification
Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See F2–64 PCM REMOVAL/INSTALLATION.)
2. Inspect the following wiring harnesses for an open or short circuit (continuity check).
Open circuit
•If there is no continuity, the circuit is open. Repair of replace the harness.
—Suction control valve terminal A (harness-side) and PCM terminal 93
—Suction control valve terminal B (harness-side) and PCM terminal 94
Short circuit
•If there is continuity, the circuit is shorted. Repair or replace the harness.
—Suction control valve terminal A (harness-side) and power supply
—Suction control valve terminal A (harness-side) and GND
—Suction control valve terminal B (harness-side) and power supply
—Suction control valve terminal B (harness-side) and GND
End Of Sie
COMMON RAIL INSPECTIONA6E401213015201
Caution
•Do not remove the fuel pressure sensor nor the fuel pressure limiter from the common rail. Since
fuel pressure in the common rail is extremely high, the fuel pressure sensor, fuel pressure limiter,
or the common rail can be damaged, leading to fuel leakage if any of them are removed.
1. Visually inspect the common rail for damage and cracks. Also verify that there is no extreme rust which will
cause fuel leakage.
•If either is observed, replace the common rail.
End Of Sie
Ambient temperature (°C {°F}) Resistance (ohms)
20 {68} Approx. 2.1
SUCTION
CONTROL VALVE A B
A6E40122018

FUEL SYSTEM
F2–55
F2
FUEL INJECTOR REMOVAL/INSTALLATIONA6E401213250201
Caution
•Fuel line spills and leakage on the parts are dangerous. Fuel can ignite and also deteriorate the
parts. To prevent this, always cover the mouths of the removed parts in the fuel system with rags
to soak up the fuel.
•To prevent the fuel injection pipe from clogging, be careful that foreign material has not entered
the pipe. Also, be sure to tighten the bolts with the specified tightening torque when installing the
fuel injection pipe.
•To prevent fuel leakage, follow the procedure indicated in the workshop manual when removing
and installing the fuel injector.
•The fuel injection pipe can be removed and reinstalled up to five times. Be sure to record in the
service record when removing and installing the fuel injection pipe. If removing it for the sixth
time, be sure to replace it with a new one.
Note
•Perform “Correction after Parts Installation” after replacing fuel injector. (See F2–34 Correction after Parts
Installation.)
1. Disconnect the negative battery cable.
2. Complete the “BEFORE REPAIR PROCEDURE”. (See F2–45 BEFORE REPAIR PROCEDURE.)
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
5. Complete the “AFTER REPAIR PROCEDURE”. (See F2–45 AFTER REPAIR PROCEDURE.)
.
Fuel Injector Installation Note
1. Temporarily tighten the injector bracket.
Tightening torque
10—20 N·m {1.1—2.0 kgf·m, 7.4—14.8 ft·lbf}
2. Temporarily tighten the injection pipes.
3. Tighten the injector side injection pipes, then
tighten the common rail side.
Tightening torque
50—60 N·m {5—6 kgf·m, 37—44 ft·lbf}
4. Fully tighten the injector bracket.
Tightening torque
52—62 N·m {5.3—6.3 kgf·m, 39—45 ft·lbf}
1 Injection pipe
2 Calibration register
3 Cylinder head cover
4 Nozzle seal
5Side wall
6 Injector bracket
7Fuel injector
(See F2–55 Fuel Injector Installation Note)
RR
R50—60
{5—6,
37—44} 52—61
{5.3—6.3,
39—45}
N·m {kgf·m, ft·lbf} 7.8—10.8 N·m
{80—110 kgf·cm,
70—95 in·lbf}
7.8—10.8 N·m
{80—110 kgf·cm,
70—95 in·lbf}
5
4
3
1
2
7
6
A6E40122019