2002 MAZDA 6 fuel

F1–34
CONTROL SYSTEM
BARO*7
(Barometric pressure)kPa, inHgIgnition switch ON (at sea level):
approx. 101 kPa {29.8 inHg}
Inspect BARO sensor. 1G
VIgnition switch ON (at sea level):
approx. 4.1 V
BOO
(Brake switch)ON/OFFBrake pedal depressed: ON
Brake pedal released: OFFInspect brake switch. 1K
CHRGLP (Generator
warning light)ON/OFFIgnition switch ON: ON
Idle: OFFPerform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
COLP*
4 (Refrigerant
pressure switch
(middle))ON/OFFRefrigerant pressure switch (middle)
ON *2 at idle: ON
Refrigerant pressure switch (middle)
OFF
*3 at idle: OFFInspect refrigerant pressure switch. 1Q
CPP*
8
(Clutch pedal position)ON/OFFClutch pedal depressed: ON
Clutch pedal released: OFFInspect clutch switch. 1R
CPP/PNP*
8 (Shift
lever position)Drive/
NeutralNeutral position: Neutral
Others: DriveInspect neutral switch. 1W
DTCCNT (Number of
DTC detected)——Perform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
ECT (Engine coolant
temperature)°C°FECT 20 °C {68 °F}: 20 °C {68 °F}
ECT 60 °C {140 °F}: 60 °C {140 °F}
Inspect ECT sensor. 1M
VECT 20 °C {68 °F}: 3.04—3.14 V
ECT 60 °C {140 °F}: 1.29—1.39 V
EVAPCP (Purge
solenoid valve duty
value)%Ignition switch ON: 0%
Idle: 0%Inspect following PIDs: IAT, RPM,
ECT, MAF, O2S11,BARO, INGEAR,
TR, VPWR.4U
FAN1
(Cooling fan control)ON/OFFECT below 100 °C {212 °F}: OFF
Others: ONInspect following PIDs: RPM, TP,
ECT, ACSW, COLP, TEST.
Inspect cooling fan relay.4L
FAN2
(Cooling fan control)ON/OFFECT below 108 °C {226 °F}: OFF
A/C operating, refrigerant pressure
switch (middle) is OFF, and ECT
below 108 °C {226 °F}: OFF
Others: ONInspect following PIDs: RPM, TP,
ECT, ACSW, COLP, TEST.
Inspect cooling fan relay.4F
FAN3
(Cooling fan control)ON/OFFECT below 100 °C {212 °F}: OFF
A/C operating, refrigerant pressure
switch (middle) is ON, and ECT
below 108 °C {226 °F}: OFF
Other: ONInspect following PIDs: RPM, TP,
ECT, ACSW, COLP, TEST.
Inspect cooling fan relay.4B
FDPDTC
(Pending code caused
FFD storage)——Perform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
FP (Fuel pump relay) ON/OFFIgnition switch ON: OFF
Idle: ON
Cranking: ONInspect following PIDs: RPM.
Inspect fuel pump relay.4P
*5
4Q*6
FUELPW (Fuel
injector duration)msIgnition switch ON: 0 ms
Idle (after warm up): approx. 2.5 msInspect following PIDs: IAT, MAF, TP,
MAP, ECT, RPM, O2S11, O2S12,
INGEAR, TR, PSP, ACSW, VPWR,
ALTT V.
Inspect fuel injector.4W, 4Z,
4AA,
4AD
FUELSYS
(Fuel system status)OL_Drive/
OL/
CL_Fault/
OL_Fault/CLIgnition switch ON: OL
Idle (after warm up): CLInspect following PIDs: IAT, MAF, TP,
MAP, ECT, RPM, O2S11, O2S12,
INGEAR, TR, PSP, ACSW, VPWR,
ALTT V.
Inspect fuel injector.—
GENVDSD
(Generator voltage
desired)VIgnition switch ON: 0 V
Idle: Approx. 14.9 V
*1 (E/L not
operating)Perform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
HTR11
(HO2S heater (front))ON/OFF Idle (after warm up): ON⇔OFFInspect following PIDs: IAT, MAF, TP,
ECT, RPM, ACSW.4A Monitor item
(Definition)Unit/
ConditionCondition/Specification
(Reference)ActionPCM
terminal

CONTROL SYSTEM
F1–35
F1
HTR12
(HO2S heater (rear))ON/OFFIgnition switch ON: ON (HO2S
heater operated)
Idle: ON (HO2S heater operated)Inspect following PIDs: IAT, MAF,
ECT, RPM, ACSW.4D
IAC (IAC valve) %Ignition switch ON: 0%
Idle: Approx. 60% (ECT 90°C {194
°F} and E/L not operating) Inspect following PIDs: IAT, RPM,
MAP, ECT, MAF, TP, INGEAR, TR,
PSP, ACSW.
Inspect IAC valve.4G, 4J
IASV (Variable air duct
control solenoid valve)ON/OFFECT is above 70 °C {158 °F}, engine
speed is above 5,800 rpm, and TP
opening angle is above 50%: ON
Others: OFFInspect following PIDs: ECT, RPM,
TP.
Inspect VAD control solenoid valve.4C
IAT
(Intake air temperature)°C°FIAT 20 °C {68 °F}: 20 °C {68 °F}
IAT 30 °C {86 °F}: 30 °C {86 °F}
Inspect IAT sensor. 2E
VIAT 20 °C {68 °F}: 2.4—2.6 V
IAT 30 °C {86 °F}: 1.7—1.9 V
IMRC (Variable tumble
control solenoid valve)ON/OFFEngine speed is below approx.
3,500 rpm: ON
Others: OFFInspect following PIDs: TP, ECT,
RPM.
Inspect variable tumble control
solenoid valve.4T
IMTV*
7 (Variable
Intake-air control
solenoid valve)ON/OFFEngine speed is below approx.
4,350 rpm: ON
Others: OFFInspect following PIDs: RPM.
Inspect VIC control solenoid valve.4R
INGEAR*
8 (Load/no
load condition)ON/OFFCPP or CPP/PNP is ON: OFF
Others: ONPerform applicable DTC
troubleshooting.1R, 1W
IVS (CTP condition)IDLE/ OFF
IDLECTP: IDLE
Others: OFF IDLEPerform applicable DTC
troubleshooting.2A
KNOCKR (Knocking
retard)°Ignition switch ON: 0°
Idle: 0°Inspect knock sensor. 2P, 2S
LOAD (Engine load) %Ignition switch ON: 0%
Idle (after warm up): approx.19%Inspect MAF sensor.—
LONGFT1 (long term
fuel trim)%Idle (after warm up): approx. –14—
14%Perform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
MAF (Mass airflow)g/sIgnition switch ON: approx. 0 g/s
Idle (after warm up): approx. 1.5 g/s
Inspect MAF sensor. 1P
VIgnition switch ON: approx. 0.7 V
Idle (after warm up): approx. 1.3 V
MAP (Manifold
absolute pressure)kPa, inHgIgnition switch ON (at sea level):
approx 101 kPa {29.8 inHg}
Inspect MAP sensor. 1J
VIgnition switch ON (at sea level):
approx 4.1 V
MIL (Malfunction
indicator lamp)ON/OFFIgnition switch ON: ON
Idle: OFFPerform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
MIL_DIS (Trabelled
distance since the MIL
illuminated)km, mileNo DTC: 0 km {0 mile}
DTC detected: Not 0 km {0 mile}Perform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
O2S11 (Front oxygen
sensor)VIgnition switch ON: 0—1.0 V
Idle (After warm up): 0—1.0 V
Inspect HO2S (front). 1AB
Rich/LeanAcceleration (After warm up): Rich
Deceleration (After warm up): Lean
O2S12 (Rear oxygen
sensor)V Idle (After warm up): approx 0.6 V
Inspect HO2S (rear). 1Y
Rich/Lean Idle (After warm up): Rich
PSP (Power steering
pressure switch)Low/HighSteering wheel in straight ahead
position: Low
Others: HighInspect PSP switch. 1Z
RFCFLAG (Readness
function code)Learnt/Not
LearntBefore running PCM adaptive
memory procedure drive mode: Not
Learnt
After running PCM adaptive memory
procedure drive mode: LearntRun PCM adaptive memory
procedure drive mode.— Monitor item
(Definition)Unit/
ConditionCondition/Specification
(Reference)ActionPCM
terminal

F1–36
CONTROL SYSTEM
*1: Calculated value; differs from terminal voltage
*2: Refrigerant pressure switch (middle) turns on when the refrigerant pressure is 1.69—1.84 MPa {17.3—18.7
kgf/cm2, 247—265 psi}
*3: Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.26—1.49 MPa {12.9—15.1
kgf/cm2, 184—214 psi}
*4: L3 and L8, LF (Intensely hot area) engine models
*5: Immobilizer system equipped model
*6: Immobilizer system not equipped
*7: L3 engine model only
*8: MTX model only
•Following PIDs are for the ATX models. If inspects for following PIDs, see K2–180 PID/DATA MONITOR
INSPECTION.
PIDs for the ATX models
—GEAR, LINEDES, LPS, OP_SW_B, SSA/SS1, SSB/SS2, SSC/SS3, TCS, TFT, TFTV, THOP, TR,
TR_SENS, TSS
RO2FT1 (Rear oxygen
sensor fuel trim)—Idle (after warm up): approx. –
0.03—0.03Perform applicable DTC
troubleshooting.—
RPM (Engine speed) rpm
LF Unleaded fuel (RON 90 or
above) model
No load: 600—700 rpm
E/L operating: 650—750 rpm
P/S operating: 650—750 rpm
A/C ON: 700—800 rpm
L3 4WD ATX model
No load: 650—750 rpm
E/L operating: 650—750 rpm
P/S operating: 650—750 rpm
A/C ON: 650—750 rpm*
2, 700—
800 rpm*3
Inspect CKP sensor. 2D, 2G
SEGRP (EGR valve
(stepping motor)
position)StepIgnition switch ON: 0 step
Idle: 0 step
Cranking: 0—60 stepsInspect following PIDs: MAF, TP,
ECT, RPM, VSS.
Inspect EGR valve.4E, 4H,
4K, 4N
SHRTFT1 (Short term
fuel trim)%Idle (after warm up): approx.–30—
25%Perform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
SPARKADV (Ignition
timing)°Ignition switch ON: BTDC 0°
Idle: BTDC approx. 10°Inspect following PIDs: MAF, TP,
ECT, RPM, INGEAR, TR, PSP,
ACSW, VPWR.
Inspect ignition timing.2J, 2M
TEST (Test mode) ON/OFF———
TP (TP)%CTP: 13—23%
WOT: 86—96%
Inspect TP sensor. 2A
VCTP: 0.65—1.15 V
WOT: 4.3—4.8 V
TPCT
(TP sensor voltage at
CTP )V0.65—1.15 V Inspect TP sensor. 2A
VPWR (Battery positive
voltage)V Ignition switch ON: B+Inspect main relay.
Inspect battery.2Y, 2Z
VSS (Vehicle speed) kph, mphVehicle speed 20 kph {12 mph}:
20 kph {12 mph}
Vehicle speed 40 kph {25 mph}:
20 kph {12 mph}Perform applicable DTC
troubleshooting.
(See F1–54 DTC TABLE)—
VT DUTY1*
7% Idle: 0%Inspect following PIDs: TP, ECT,
RPM.
Inspect OCV.2I, 2L Monitor item
(Definition)Unit/
ConditionCondition/Specification
(Reference)ActionPCM
terminal

F1–42
CONTROL SYSTEM
4B Cooling fan control Cooling fan relay IdlingECT below 100
°C {212 °F}B+•Inspect cooling fan
relay
•Inspect related
harness A/C operating Below 1.0
4CVAD control*
5VAD control
solenoid valveIgnition switch
ONEngine speed
below 5,800
rpmB+
•Inspect VAD control
solenoid valve
•Inspect related
harness Engine speed
above 5,800
rpmBelow 1.0
—*
7————
4DHO2S (Rear) heater
controlHO2S (Rear)
heaterIgnition switch
ONEngine speed
below 4,000
rpmB+
•Inspect HO2S (Front)
heater.
•Inspect related
harness Engine speed
above 4,000
rpmBelow 1.0
4EEGR valve #1 coil
controlEGR valve
(terminal E)Ignition switch ON Below 1.0•Inspect EGR valve
•Inspect related
harness Idle Below 1.0
4F Cooling fan control Cooling fan relay IdlingECT below 100
°C {212 °F}B+
•Inspect cooling fan
relay
•Inspect related
harness A/C operating
and refrigerant
pressure switch
(middle) ONBelow 1.0
4G IAC (+) IAC valve•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect IAC valve
•Inspect related
harness
4HEGR valve #2 coil
controlEGR valve
(terminal A)Ignition switch ON B+•Inspect EGR valve
•Inspect related
harness Idle B+
4I Starter relay controlStarter relay
(MTX)
TR switch (ATX)Under any condition Below 1.0•Perform “On-Board
Diagnostic Test”
•Inspect related
harness
4J IAC (–)IAC valve•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect IAC valve
•Inspect related
harness
4KEGR valve #3 coil
controlEGR valve
(terminal B)Ignition switch ON B+•Inspect EGR valve
•Inspect related
harness Idle B+
4L Cooling fan control Cooling fan relay IdlingECT below 100
°C {212 °F}B+•Inspect cooling fan
relay
•Inspect related
harness A/C operating Below 1.0
4MOCV control*
5OCV•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect OCV valve
•Inspect related
harness
—*
7————
4NEGR valve #4 coil
controlEGR valve
(terminal F)Ignition switch ON Below 1.0•Inspect EGR valve
•Inspect related
harness Idle Below 1.0
4O A/C A/C relayA/C operating Below 1.0•Inspect A/C relay
•Inspect related
harness A/C not operating B+
4PFuel pump
control*
10Fuel pump relayIgnition switch ON B+•Inspect fuel pump
relay
•Inspect related
harness Cranking Below 1.0
Idle Below 1.0
—*
9———— Terminal Signal Connected to Test conditionVoltage
(V)Action

CONTROL SYSTEM
F1–43
F1
*1: Calculated value; differs from terminal voltage
*2: MTX models
*3: ATX models
*4: LF engine models
*5: L3 engine models
4QFuel pump control*
9Fuel pump relayIgnition switch ON B+•Inspect fuel pump
relay
•Inspect related
harness Cranking Below 1.0
Idle Below 1.0
—*
10————
4RVIC control*
5VIC control
solenoid valveEngine speed: above 4,500 rpm B+•Inspect VIC solenoid
valve
•Inspect related
harness Engine speed: below 4,500 rpm Below 1.0
—*
7————
4S—— — ——
4TVariable tumble
controlVariable tumble
control solenoid
valveECT above 63 °C { 145 °F} while
idling.B+•Inspect variable
tumble control
solenoid valve
•Inspect related
harness ECT below 63 °C {145 °F} and
engine speed below 3,750 rpmBelow 1.0
4U Purge controlPurge solenoid
valve•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect purge
solenoid valve
•Inspect related
harness
4VB+*
3Main relayIgnition switch OFF Below 1.0•Inspect battery
•Inspect related
harness Ignition switch ON B+
—— — ——
4W Fuel injection (#2) Fuel injector No.2•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect fuel injector
No.2
•Inspect related
harness
4X GND GND Under any condition Below 1.0•Inspect related
harness
4YShift solenoid C
control*
11Shift solenoid C•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect shift solenoid
C
•Inspect related
harness
—*
14————
4Z Fuel injection (#1) Fuel injector No.1•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect fuel injector
No.1
•Inspect related
harness
4AA Fuel injection (#4) Fuel injector No.4•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect fuel injector
No.4
•Inspect related
harness
4ABShift solenoid A
control*
11Shift solenoid A•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect shift solenoid
A
•Inspect related
harness
—*
14————
4ACShift solenoid B
control*
11Shift solenoid B•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect shift solenoid
B
•Inspect related
harness
—*
14————
4AD Fuel injection (#3) Fuel injector No.3•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect fuel injector
No.3
•Inspect related
harness Terminal Signal Connected to Test conditionVoltage
(V)Action

F1–44
CONTROL SYSTEM
*6: Unleaded fuel (RON 90 or above) models
*7: Exclude L3 engine models
*8: MTX, without ABS models
*9: Immobilizer system equipped
*10: Immobilizer system not equipped
*11: 2WD ATX models
*12: 4WD ATX models
*13: Exclude MTX models without ABS
*14: Exclude 2WD ATX models
Inspection Using An Oscilloscope (Reference)
IGT1, IGT2 control signals
PCM terminals
•IGT1(No.1 and No.4): 1A(+)—1D(–)
•IGT2(No.2 and No.3): 1B(+)—1C(–)
Oscilloscope setting
•4 V/DIV (Y), 0.01 ms/DIV (X), DC range
Vehicle condition
•Idle after warm up (engine speed approx. 650
rpm [MTX] or 700 rpm [ATX], no load, P/S off, A/C
off)
Generator output voltage signal
PCM terminals
•1AA(+)—2AC(–)
Oscilloscope setting
•2 V/DIV (Y), 2 ms/DIV (X), DC range
Vehicle condition
•Idle after warm up (engine speed approx. 650
rpm [MTX] or 700 rpm [ATX], no load, P/S off, A/C
off)
HO2S (front) signal
PCM terminals
•1AB(+)—2H(–)
Oscilloscope setting
•0.1 V/DIV (Y), 400 ms/DIV (X), DC range
Vehicle condition
•Idle after warm up (engine speed approx. 650
rpm [MTX], 700 rpm [ATX], no load, P/S off, A/C
off)
0 V
A6A3940W003
0 V
A6A3940W004
0 V
A6A3940W005

CONTROL SYSTEM
F1–49
F1
Fuel injection control
PCM terminals
•Fuel Injection No.1: 4Z(+)—1C(–)
•Fuel Injection No.1: 4W(+)—1C(–)
•Fuel Injection No.1: 4AD(+)—1C(–)
•Fuel Injection No.1: 4AA(+)—1C(–)
Oscilloscope setting
•4 V/DIV (Y), 10 ms/DIV (X), DC range
Vehicle condition
•Idle after warm up (engine speed approx. 650
rpm [MTX] or 700 rpm [ATX], no load, P/S off, A/C
off)
Shift solenoid C control
PCM terminals
•4Y(+)—1C(–)
Oscilloscope setting
•5 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
•Idle after warm up (engine speed approx. 650
rpm [MTX] or 700 rpm [ATX], no load, P/S off, A/C
off)
Shift solenoid A control
PCM terminals
•4AB(+)—1C(–)
Oscilloscope setting
•5 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
•Idle after warm up (engine speed approx. 650
rpm [MTX] or 700 rpm [ATX], no load, P/S off, A/C
off)
Shift solenoid B control
PCM terminals
•4AC(+)—1C(–)
Oscilloscope setting
•5 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
•Idle after warm up (engine speed approx. 650
rpm [MTX] or 700 rpm [ATX], no load, P/S off, A/C
off)
End Of Sie
0 V
A6A3940W024
0 V
A6A3940W025
0 V
A6A3940W026
0 V
A6A3940W027

F1–50
ON-BOARD DIAGNOSTIC
OUTLINEA6E397018881201•The construction and operation of the on-board diagnostic system is essentially carried over from that of the
current Mazda6 (GG), except for the following. (See Mazda6 Training Manual 3359-1*-02C.)
4WD ATX model
—DTCs, PID monitoring items, and simulation items have been deleted to match the vehicle characteristics.
Unleaded fuel (RON 90 or above) model
—DTCs and PID monitoring items which relevant to BARO sensor have been deleted to match the vehicle
characteristics.
End Of Sie
CONTROL DEVICE AND MONITORING SYSTEM RELATIONSHIP CHARTA6E397018881202Monitoring System
×: Applicable
End Of Sie
DIAGNOSTIC TEST MODE (4WD)A6E397018881203Sending Emission-related Malfunction code (DTC) (Mode 03)
•The DTCs are shown in the table.
DTC table
×: Applicable
—: Not applicable
ON-BOARD DIAGNOSTIC
ComponentMonitor item
Catalyst Misfire Fuel system Oxygen sensor Oxygen sensor
heater
Input
CKP sensor×××××
CMP sensor×××××
VSS×××
MAF sensor×××××
ECT sensor×××××
IAT sensor××××
TP sensor××××
Rear HO2S×××
Front HO2S××××
Output
DLC-2×××××
MIL×××××
Purge solenoid valve××
Fuel injectors×
DTC No. Condition MIL DC Monitor itemMemory
function
P0010 CMP actuator circuit malfunction ON 1 CCM×
P0011 CMP timing over-advanced ON 1 CCM×
P0012 CMP timing over-retarded ON 1 CCM×
P0031 Front HO2S heater circuit low input ON 2O
2 sensor heater
×
P0032 Front HO2S heater circuit high input ON 2O
2 sensor heater
×
P0037 Rear HO2S heater circuit low input ON 2O
2 sensor heater
×
P0038 Rear HO2S heater circuit high input ON 2O
2 sensor heater
×
P0101 MAF sensor inconsistent with TP sensor ON 2 CCM×
P0102 MAF circuit low input ON 1 CCM×
P0103 MAF circuit high input ON 1 CCM×
P0107 MAP sensor circuit low input ON 1 CCM×
P0108 MAP sensor circuit high input ON 1 CCM×
P0111 IAT circuit performance problem ON 2 CCM×