2002 MAZDA 6 brake

ON-BOARD DIAGNOSTIC
F2–147
F2
End Of Sie
14INSPECT POOR CONNECTION OF PCM
CONNECTOR
•Turn engine switch to OFF.
•Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
•Is there any malfunction?Yes Repair or replace suspected terminal, go to Step 21.
No Go to Step 21.
15INSPECT POOR CONNECTION OF BRAKE
SWITCH 2 CONNECTOR
•Turn engine switch to OFF.
•Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
•Is there any malfunction?Yes Repair or replace suspected terminal, go to Step 21.
No Go to next step.
16INSPECT BRAKE SWITCH 2 GND CIRCUIT FOR
OPEN
•Turn engine switch to OFF.
•Inspect continuity between brake switch
terminal C and body GND.
•Is there continuity?Yes Go to next step.
No Repair or replace harness for open, go to Step 21.
17INSPECT BRAKE SWITCH 2
•Inspect brake switch 2.
•Is there any malfunction?Yes Replace brake switch, go to Step 21.
No Go to next step.
18INSPECT BRAKE SWITCH 2 SIGNAL CIRCUIT
FOR SHORT TO GND
•Turn engine switch to OFF.
•Inspect continuity between brake switch
terminal A and body GND.
•Is there continuity?Yes Repair or replace harness for short to GND, go to Step 21.
No Go to next step.
19INSPECT POOR CONNECTION OF PCM
CONNECTOR
•Turn engine switch to OFF.
•Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
•Is there any malfunction?Yes Repair or replace suspected terminal, go to Step 21.
No Go to next step.
20INSPECT BRAKE SWITCH 2 SIGNAL CIRCUIT
FOR OPEN
•Turn engine switch to OFF.
•Inspect continuity between brake switch
terminal A and PCM terminal 34.
•Is there continuity?Yes Go to next step.
No Repair or replace harness for open, go to next step.
21VERIFY TROUBLESHOOTING OF DTC P0504
COMPLETED
•Make sure to reconnect all disconnected
connectors.
•Clear DTC from PCM memory using WDS or
equivalent.
•Start engine.
•Is same DTC present?Yes Replace PCM, go to next step.
(See F2–64 PCM REMOVAL/INSTALLATION)
No Go to next step.
22VERIFY AFTER REPAIR PROCEDURE
•Perform “After Repair Procedure”.
(See F2–86 AFTER REPAIR PROCEDURE)
•Is there any DTC present?Yes Go to applicable DTC inspection.
(See F2–87 DTC TABLE)
No Troubleshooting completed. STEP INSPECTION ACTION

F2–172
TROUBLESHOOTING
×: Applicable
End Of Sie
Troubleshooting item
1 Melting of main or other fuses
2 MIL illuminates
3 Will not crank×
4 Hard start/long crank/erratic start/erratic crank
5 Engine stalls After start/at idle×× ×
6 Cranks normally but will not start×
7 Slow return to idle
8 Engine runs rough/rolling idle×××
9 Fast idle/runs on
10 Low idle/stalls during deceleration××
11Engine stalls/quits Acceleration/cruise××××
Engine runs rough Acceleration/cruise××××
Misses Acceleration/cruise××××
Buck/jerk Acceleration/cruise/ deceleration××××
Hesitation/stumble Acceleration××××
Surges Acceleration/cruise××××
12 Lack/loss of power Acceleration/cruise×× × ×
13 Knocking/pinging
14 Poor fuel economy××××× ×
15 Emissions compliance×
16 High oil consumption/leakage
17 Cooling system concerns Overheating××× ×
18 Cooling system concerns Runs cold××
19 Excessive black smoke
20 Fuel odor (in engine compartment)
21 Engine noise××
22 Vibration concerns (engine)××××
23 A/C does not work sufficiently××
24 A/C always on or A/C compressor runs continuously××
25 A/C does not cut off under wide open throttle conditions
26 Constant voltage
A/C relay (A/C control siganl) circuit malfunctionA/C magnetic clutch or related circuit malfunctionCooling fan No.1 system malfunctionClutch slippageAir in power steering fuluid lineVSS or related circuit malfunctionBrake draggingLoose partsImproper balance of wheel or tiresDriveline malfunctionSuspension malfunctionImmobilizer system and/or circuit malfunctionCoolant heater system malfunction

TROUBLESHOOTING
F2–195
F2
NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISEA6E408018881214
Diagnostic Procedure
12 LACK/LOSS OF POWER-ACCELERATION CRUISE
DESCRIPTION•Performance is poor under load (e.g., power down when climbing hills).
POSSIBLE
CAUSE•Poor fuel quality
•Air leakage from intake-air system
•Intake-air system restriction or clogging
•Engine overheating
•A/C system improper operation
•Improper operation of A/C cut-off control
•Variable boost control (VBC) system malfunction
•Variable swirl control (VSC) system malfunction
•EGR system malfunction
•Vacuum leakage
•Clutch slippage
•Exhaust system and/or catalyst converter restriction
•Fuel line or clogging or restriction
•Fuel filter clogging or restriction
•Incorrect fuel injection timing
•Erratic signal from CKP sensor
•Erratic signal from CMP sensor
•ECT sensor or related circuit malfunction
•Boost sensor or related circuit malfunction
•Accelerator position sensor or related circuit malfunction
•Idle switch or related circuit malfunction
•MAF/IAT sensor or related circuit malfunction
•IAT sensor No.2 or related circuit malfunction
•Incorrect adjustment accelerator position sensor and/or idle switch
•Incorrect idle speed
•Inadequate fuel pressure
•Fuel pressure sensor or related circuit malfunction
•Suction control valve malfunction (built-in supply pump)
•Fuel pressure limiter malfunction (built-in common rail)
•Supply pump malfunction
•Fuel injector malfunction
•Low engine compression
•Improper valve timing
•Cooling fan No.1 or cooling fan No.2 seat are improper
•Turbocharger malfunction
•Charge air cooler malfunction
•Brake system dragging
•Intake shutter valve malfunction
•Guide blade valve malfunction
•IDM or related circuit malfunction
Warning
The following troubleshooting flow chart contains the fuel system diagnosis and repair
procedures. Read the following warnings before performing the fuel system services:
•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 leakage are dangerous. Fuel can ignite and cause serious injury or death
and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE
REPAIR PROCEDURE” and “AFTER REPAIR PROCEDURE” described in this manual.
STEP INSPECTION RESULTS ACTION
1 Is idle speed stable? Yes Go to next step.
No Go to symptom troubleshooting “NO.8 ENGINE RUNS
ROUGH/ROLLING IDLE”.
2 Is engine overheating? Yes Go to symptom troubleshooting “NO.17 COOLING
SYSTEM CONCERNS—OVERHEATING”.
No Go to next step.

F2–198
TROUBLESHOOTING
End Of Sie
24 Is engine compression correct?
(See B2–8 COMPRESSION INSPECTION)Yes Go to next step.
No Inspect for following:
•Damaged valve seat
•Worn valve stem and valve guide
•Worn or stuck piston ring
•Worn piston, piston ring or cylinder
•Improper valve timing
Service as necessary.
25 Inspect fuel injector.
(See F2–56 FUEL INJECTOR INSPECTION)
Is fuel injector okay?Yes Go to next step.
No Repair or replace as necessary.
26 Inspect IDM.
(See F2–84 INJECTOR DRIVER MODULE
(IDM) INSPECTION)
Is IDM okay?Yes Go to next step.
No Repair or replace as necessary.
27 Inspect timing belt for following:
•Chipping of gear teeth
•Low tension
•Breakage damage or cracks
Is timing belt okay?Yes Inspect following:
•Clutch slippage
•CKP sensor
•Boost sensor and related circuit
•Brake system for dragging
If okay, remove and inspect supply pump and common
rail.
No If valve timing is incorrect, adjust valve timing.
If timing belt is not okay, replace timing belt.
28 Verify test results.
•If okay, return to diagnostic index to service any additional symptoms.
•If malfunction remains, replace PCM. (See F2–64 PCM REMOVAL/INSTALLATION) STEP INSPECTION RESULTS ACTION

F2–202
TROUBLESHOOTING
NO.14 POOR FUEL ECONOMYA6E408018881216
Diagnostic Procedure
14 POOR FUEL ECONOMY
DESCRIPTION•Fuel economy is unsatisfactory.
POSSIBLE
CAUSE•Incorrect idle speed
•A/C system improper operation
•Intake -air system clogging or restriction
•Engine cooling system malfunction
•Poor fuel quality
•Improper coolant level
•Erratic signal from CKP sensor
•Erratic signal from CMP sensor
•Fuel pressure sensor or related circuit malfunction
•ECT sensor or related circuit malfunction
•Boost sensor or related circuit malfunction
•Accelerator position sensor or related circuit malfunction
•Incorrect adjustment idle switch
•MAF/IAT sensor or related circuit malfunction
•IAT sensor No .2 or related circuit malfunction
•VSS or related circuit malfunction
•Turbocharger malfunction
•Charge air cooler malfunction
•Low engine compression
•Improper valve timing
•Exhaust system and/or catalyst converter clogging
•Incorrect fuel injection timing
•Fuel injector malfunction
•Supply pump malfunction
•Fuel leakage
•Fuel line clogging or restriction
•Fuel filter clogging or restriction
•Brake dragging
•EGR system malfunction
•Vacuum leakage
•Clutch slippage
•Variable boost control (VBC) system malfunction
•Coolant heater system malfunction
Warning
The following troubleshooting flow chart contains the fuel system diagnosis and repair
procedures. Read the following warnings before performing the fuel system services:
•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 leakage are dangerous. Fuel can ignite and cause serious injury or death
and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE
REPAIR PROCEDURE” and “AFTER REPAIR PROCEDURE” described in this manual.
STEP INSPECTION RESULTS ACTION
1 Inspect for following:
•Fuel quality (e.g.: including water
contamination, winter/summer blend)
•Fuel line/fuel filter clogging and/or restriction
•Fuel line leakage
•Intake-air system restriction
•Exhaust system and/or catalyst converter
restriction
•Charge air cooler condition (restriction or
damaged)
•Vacuum leakage
Are all items okay?Yes Go to next step.
No Service as necessary.
Repeat Step 1.
2 Is brake system functioning properly? Yes Go to next step.
No Inspect for cause.

F2–204
TROUBLESHOOTING
End Of Sie
14 Measure gap between CKP sensor and teeth of
pulse wheel.
Specification
1.5—2.5 mm {0.059—0.098 in}
Is gap within specification?Yes Go to next step.
No Adjust CKP sensor position.
15 Visually inspect CMP sensor and teeth of pulse
wheel.
Are CMP sensor and teeth of pulse wheel okay?Yes Inspect following PIDs:
(See F2–65 PCM INSPECTION)
•ECT
•IAT
•MAF
•MAP
•RPM
•VSS
If PID value is not as specified, repair or replace
malfunctioning parts.
If PID value is okay, go to next step.
No Replace malfunctioning parts.
16 Inspect timing belt for following:
•Chipping of gear teeth
•Low tension
•Breakage damage or cracks
Is timing belt okay?Yes Inspect following:
•Clutch slippage
•CKP sensor
•Boost sensor and related circuit
•Brake system for dragging
•Coolant heater system
•Glow system
If okay, remove and inspect supply pump.
No If timing is incorrect, adjust valve timing.
If timing belt is not okay, replace timing belt.
17 Verify test results.
•If okay, return to diagnostic index to service any additional symptoms.
•If malfunction remains, replace PCM. (See F2–64 PCM REMOVAL/INSTALLATION) STEP INSPECTION RESULTS ACTION

H–4
CLUTCH RELEASE CYLINDER
CLUTCH RELEASE CYLINDER DISASSEMBLY/ASSEMBLY (A65M-R MANUAL TRANSAXLE MODELS)A6E4918419202021. Disassemble in the order indicated in the table.
2. Assemble in the reverse order of disassembly.
.
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56
7
5.9—8.8 N.
m
{60—90 kgf.
cm,53—78 in.
lbf}
4
BRAKEFLUID
BRAKEFLUID3
1
2
A6E4918W011
1 Boot
2 Push rod
3 Piston and cap
4 Return spring5 Bleeder cap
6 Bleeder screw
7 Release cylinder body

OUTLINE
K2–3
K2
FEATURESA6E570201030201ATX
Improved marketability
•New JA5AX-EL automatic transaxle for 4WD is used with on L3 engine.
Improved shift quality
•Five speed automatic transaxle has been adopted.
•The feedback control system has been adopted.
•The centrifugal balance clutch chambers have been adopted.
•A plate-type clutch pack replaces the band brake in the 2-4 brake.
High efficiency, compactness, and light weight
•Miniature trochoid gear type oil pump with torque converter direct drive has been adopted.
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SPECIFICATIONSA6E570201030202
OUTLINE
ItemNew Mazda6 (GY) Current MPV (LW)
–For General
(R.H.D.)
specs.Except for
General
(R.H.D.)
specs.
Transaxle type JA5AX-EL JA5A-EL
Gear ratio1GR 3.801
2GR 2.131
3GR 1.364
4GR 0.935
5GR (O/D) 0.685
Reverse 2.970
Final gear ratio 3.491 3.290 3.491
ATFType
ATF M-III or equivalent (e.g. Dexron
®III)
Capacity (approximate quantity)
(L {US qt, Imp qt})8.3 {8.8, 7.3} 9.7 {10.3, 8.5}
Torque converter stall torque ratio 1.86:1
Hydraulic system (Number of
drive/driven plates)Low clutch 6/6 7/7
2-4 brake 3/4
High clutch 5/5
Direct clutch 3/5 4/4
Reverse clutch 2/2
Low and reverse brake 6/5
Band servo (mm {in})Reduction accumulator piston outer
dia./reduction band servo piston
outer dia.49.66/57.64
Number of front planetary gear
teethRing gear 74
Sun gear 34
Pinion gear 20
Number of rear planetary gear
teethRing gear 75
Sun gear 42
Pinion gear 17
Number of reduction planetary
gear teethRing gear 85
Sun gear 31
Pinion gear 27
Number of output gear teeth 41
Number of idler gear teeth 47
Number of reduction gear teeth 22 23 22
Number of ring gear teeth 67 66 67
Transfer oilTypeSAE 80W-90
API Service GL-5–
Capacity (approximate quantity)
(L {US qt, Imp qt})0.62 {0.66, 0.55}–