MAZDA 6 2002 Workshop Manual Suplement

CONTROL SYSTEM
F1–33
F1
PCM INSPECTION (4WD)A6E394018880207Using SST (WDS or equivalent)
Note
•PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.
—CMP sensor
—Main relay
1. Connect the SST (WDS or equivalent) to the
DLC-2.
2. Turn the ignition switch to ON position.
3. Measure the PID value.
•If PID value is not within the specification,
follow the instructions in Action column.
Note
•The PID/DATA MONITOR function monitors
the calculated value of the input/output
signals in the PCM. Therefore, an output
device malfunction is not directly indicated
as a malfunction of the monitored value for
the output device. If a monitored value of an
output device is out of specification, inspect the monitored value of the input device related to the output
control.
•For input/output signals except those of the monitoring items, use a voltmeter to measure the PCM
terminal voltage.
•The simulation items that are used in the ENGINE CONTROL SYSTEM OPERATION INSPECTION are
as follows.
—ACCS, ALTF, EVAPCP, FAN1, FAN2, FAN3, FP, HTR11, HTR12, IAC, IASV, IMRC, IMTV, VT DUTY1
PID/DATA monitor table (reference)
CONTROL SYSTEM
DLC-2
A6E3970W002
Monitor item
(Definition)Unit/
ConditionCondition/Specification
(Reference)ActionPCM
terminal
ACCS (A/C relay) ON/OFFIgnition switch ON: OFF
A/C switch ON and fan switch ON at
idle: ONInspect following PIDs: RPM, TP,
ECT, ACSW, TR.
Inspect A/C relay.4O
ACSW (A/C switch) ON/OFFA/C switch and fan switch ON at
ignition switch ON: OFF
A/C switch OFF at ignition switch
ON: OFFInspect A/C switch. 1AC
ALTF (Generator field
coil control duty value)%Ignition switch ON: 0%
Idle: 0—100%
Just after A/C switch ON and fan
switch ON at idle: Duty value risesInspect following PIDs: IAT, ECT,
RPM, VPWR, ALTT V.
Inspect generator.1AD
ALTT V (Generator
output voltage)VIgnition switch ON: 0 V
Idle: Approx. 14.9 V
*1 (E/L not
operating)Inspect generator. 1AA
ARPMDES
(Target engine speed)RPM
LF Unleaded fuel (RON 90 or
above) model
No load: 650 rpm
E/L operating: 700 rpm
P/S operating: 700 rpm
A/C ON: 750 rpm
L3 4WD ATX model
No load: 700 rpm
E/L operating: 700 rpm
P/S operating: 700 rpm
A/C ON: 700 rpm*
2, 750 rpm*3
Inspect following PIDs: IAT, RPM,
MAP, ECT, MAF, TP, INGEAR,
ACSW, TR, PSP, ALTT V.
Inspect IAC valve.
Inspect CKP sensor.—
AST (After start timer) Sec———

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

CONTROL SYSTEM
F1–37
F1
Without Using the SST
Caution
•The PCM terminal voltages vary with change in measuring conditions and vehicle conditions.
Always carry out a total inspection of the input systems, output systems, and PCM to determine
the cause of trouble. Otherwise, a wrong diagnosis will be made.
1. Measure the voltage at each terminal.
•If any incorrect voltage is detected, inspect the related system(s), wiring harnesses and connector(s)
referring to the Action column in the terminal voltage table.
Terminal voltage table (Reference)
Terminal Signal Connected to Test conditionVoltage
(V)Action
1A IGT1Ignition coil (No. 1,
4 cylinders)•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect ignition coil
•Inspect related
harness
1B IGT2Ignition coil (No. 2,
3 cylinders)•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect ignition coil
•Inspect related
harness
1C GND GND Under any condition Below 1.0•Inspect related
harness
1D GND GND Under any condition Below 1.0•Inspect related
harness
1E—— — ——
1F—— — ——
1G BARO BARO sensor Ignition switch ON (at sea level)Approx.
4.1 V•Inspect BARO sensor
•Inspect related
harness
1H—— — ——
1I—— — ——
1JManifold absolute
pressureMAP sensorIgnition switch ON (Engine OFF)Approx.
4.1•Inspect MAP sensor
•Inspect related
harness
IdleApprox.
1.5
1K Brake Brake switchBrake pedal depressed B+•Inspect brake switch
•Inspect related
harness Brake pedal released Below 1.0
1L—— — ——
1M ECT ECT sensorIgnition switch
ONECT 20 °C
{68 °F}3.04—
3.14•Inspect ECT sensor
•Inspect related
harness ECT 60 °C
{140 °F}1.29—
1.39
1N—— — ——
1O—— — ——
1P MAF MAF sensorIgnition switch ONApprox.
0.7•Inspect MAF sensor
•Inspect related
harness
Idle (after warm up)Approx.
1.3
1B 1A
1E 1D
1C 1H 1G 1J
1F 1I 1M
1L 1N 1K 1T 1Q1P 1S
1O 1R 1W1V
1Z 1Y
1X1AC1AB
1AA 1AD1U 2B 2A
2E 2D
2C 2H 2G 2J
2F 2I 2M
2L 2N 2K 2T 2Q2P 2S
2O 2R 2W2V
2Z 2Y
2X2AC2AB
2AA 2AD2U 3B 3A
3E 3D
3C 3H 3G 3J
3F 3I 3M
3L 3N 3K 3T 3Q3P 3S
3O 3R 3W3V
3Z 3Y
3X3AA3U 4B 4A
4E 4D
4C 4H 4G 4J
4F 4I 4M
4L 4N 4K 4T 4Q4P 4S
4O 4R 4W4V
4Z 4Y
4X4AC4AB
4AA 4AD4U
A6A3940W002

F1–38
CONTROL SYSTEM
1QRefrigerant
pressure switch
(middle)Refrigerant
pressure switch
(middle)A/C ONRefrigerant
pressure is
above 1.52
MPaBelow 1.0
•Inspect refrigerant
pressure switch
•Inspect related
harness Refrigerant
pressure is
below 1.23
MPaB+
1RClutch operation*
2Clutch switchClutch pedal depressed Below 1.0•Inspect clutch switch
•Inspect related
harness Clutch pedal released B+
—*
3————
1S—— — ——
1T—— — ——
1U—— — ——
1V—— — ——
1WNeutral position*
2Neutral switchShift lever is at neutral position Below 1.0
•Inspect neutral switch
•Inspect related
harness Shift lever is not at neutral
positionB+
Selector lever
position*
11TR switch
(terminal C)Ignition switch
ONP rangeApprox.
4.6
•Inspect TR switch
•Inspect related
harness R rangeApprox.
3.9
N rangeApprox.
3.2
D range*4
M range*5Approx.
2.5
S range*
4Approx.
1.7
L range*
4Approx.
0.94
—*
12————
1X—— — ——
1Y HO2S (rear) HO2S (rear)Ignition switch ON Approx. 0•Inspect HO2S (rear)
•Inspect related
harness Idle (after warm up) 0—1.0
1Z PSP PSP switch IdleSteering wheel
at straight
ahead positionB+•Inspect PSP switch
•Inspect power
steering system
•Inspect related
harness While turning
steering wheelBelow 1.0
1AAGenerator output
voltageGenerator
(terminal P)•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect generator
•Inspect related
harness
1AB HO2S (front) HO2S (front)•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect HO2S (front)
•Inspect related
harness
1AC A/C on signalRefrigerant
pressure switchIdleA/C switch and
fan switch onBelow 1.0•Inspect refrigerant
pressure switch
•Inspect related
harness A/C switch off B+
1ADGenerator field coil
controlGenerator
(terminal D)•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect generator
•Inspect related
harness
2A Throttle position TP sensorIgnition switch
ONCTP0.65—
1.15•Inspect TP sensor
•Inspect related
harness
WOT 4.3—4.8
2B—— — ——
2C—— — —— Terminal Signal Connected to Test conditionVoltage
(V)Action

CONTROL SYSTEM
F1–39
F1
2D CKP (+) CKP sensor•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect CKP sensor
•Inspect related
harness
2E IAT MAF/IAT sensorIgnition switch
ONIAT 20 °C
{68 °F}2.4—2.6
•Inspect IAT sensor
•Inspect related
harness IAT 30 °C
{86 °F}1.7—1.9
2F—— — ——
2G CKP (–) CKP sensor•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect CKP sensor
•Inspect related
harness
2H Sensor GNDMAF/IAT sensor,
HO2S (Front,
Rear), BARO
sensor*
6, ECT
sensor, TP
sensor, MAP
sensor, TFT
sensor, TR switchUnder any condition Below 1.0•Inspect related
harness
2IVSS (–)*
8VSS•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect VSS sensor
•Inspect related
harness
—*
13————
2J CMP (+) CMP sensor•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect CMP sensor
•Inspect related
harness
2KConstant voltage
(Vref)MAP sensor, TP
sensor, BARO
sensor*
6Ignition switch ONApprox.
5.0•Inspect related
harness
2LVSS (+)*
8VSS•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect VSS sensor
•Inspect related
harness
—*
13————
2M CMP (–) CMP sensor•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect CMP sensor
•Inspect related
harness
2N—— — ——
2O—— — ——
2P Knocking (–) Knock sensorIgnition switch ON (Use digital
type voltmeter, because
measurement voltage will be
detected less than true voltage
when using analog type
voltmeter)Below 1.0•Perform “On-Board
Diagnostic Test”
•Inspect related
harness
2QCoil (Immobilizer
system)*
9CoilBecause this terminal is for communication,
good/no good judgment by terminal voltage
is not possible.•Inspect coil
•Inspect related
harness
—*
10————
2R CAN (–)Instrument cluster,
ABS HU/CM,
ABS/TCS HU/CM,
DSC HU/CM,
TCM*
12
Because this terminal is for CAN, good/no
good judgment by terminal voltage is not
possible.•Inspect related
harness
2S Knocking (+) Knock sensorIgnition switch ON (Use digital
type voltmeter, because
measurement voltage will be
detected less than true voltage
when using analog type
voltmeter)Approx.
4.3•Perform “On-Board
Diagnostic Test”
•Inspect related
harness Terminal Signal Connected to Test conditionVoltage
(V)Action

F1–40
CONTROL SYSTEM
2TCoil*
9 (Immobilizer
system)CoilBecause this terminal is for communication,
good/no good judgment by terminal voltage
is not possible.•Inspect coil
•Inspect related
harness
—*
10————
2U CAN (+)Instrument cluster,
ABS HU/CM,
ABS/TCS HU/CM,
DSC HU/CM,
TCM*
12
Because this terminal is for CAN, good/no
good judgment by terminal voltage is not
possible.•Inspect related
harness
2V—— — ——
2WSecurity light
control*
9Instrument cluster
(Security light)Security light illuminate—
•Inspect related
harness
Others Below 1.0
—*
10————
2X Main relay control Main relayIgnition switch OFF B+•Inspect main relay
•Inspect related
harness Ignition switch ON Below 1.0
2Y B+ Main relayIgnition switch OFF Below 1.0•Inspect battery
•Inspect related
harness Ignition switch ON B+
2ZBack-up power
supplyBattery (positive
terminal)Under any condition B+•Inspect battery
•Inspect related
harness
2AA—— — ——
2AB GND GND Under any condition Below 1.0•Inspect related
harness
2AC GND GND Under any condition Below 1.0•Inspect related
harness
2AD—— — ——
3A—— — ——
3B—— — ——
3CVehicle speed*
3VSS•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect VSS
•Inspect related
harness
—*
13————
3DATF temperature*
11TFT sensorIgnition switch
ONTFT 20 °C
{68 °F}Approx.
3.3
•Inspect TFT sensor
•Inspect related
harness TFT 40 °C
{104 °F}Approx.
2.4
TFT 60 °C
{140 °F}Approx.
1.5
—*
14————
3E—— — ——
3F—— — ——
3GInput/turbine speed
sensor (+)*
11Input/turbine
speed sensor•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect input/turbine
speed sensor
•Inspect related
harness
—*
14————
3H—— — ——
3I—— — ——
3JInput/turbine speed
sensor (–)*
11Input/turbine
speed sensor•Inspect using the wave profile.
(See F1–44 Inspection Using An
Oscilloscope (Reference).)•Inspect input/turbine
speed sensor
•Inspect related
harness
—*
14———— Terminal Signal Connected to Test conditionVoltage
(V)Action

CONTROL SYSTEM
F1–41
F1
3KManual down*
5, 11Down switch
Ignition switch
ONDetects down-
shift operation
of selector lever
in M range
Below 1.0
•
Inspect down switch
• Inspect related
harness
Others B+
—*
14————
3L — — — — —
3M — — — — —
3N Manual up*
5, 11Up switch
Ignition switch
ONDetects up-shift
operation of
selector lever in
M range
Below 1.0
•
Inspect up switch
• Inspect related
harness
Others B+
—*
14————
3O — — — — —
3P Shift solenoid E
control*
11Shift solenoid E Detects TCC operation B+
•Inspect shift solenoid
E
• Inspect related
harness
Others Below 1.0
—*
14————
3Q HOLD*
4, 11HOLD switch
Ignition switch
ONHOLD switch
pushed
Below 1.0
•
Inspect HOLD switch
• Inspect related
harness
Others B+
M range*
5, 11M range switch Ignition switch
ONManual mode Below 1.0
•Inspect M range
switch
• Inspect related
harness
Others B+
—*
14————
3R — — — — —
3S Shift solenoid D
control*
11Shift solenoid D Selector lever is at P, N position B+
•Inspect shift solenoid
D
• Inspect related
harness
Others Below 1.0
—*
14————
3T Oil pressure*
11Oil pressure
switch Oil pressure switch ON Below 1.0
•Inspect oil pressure
switch
• Inspect related
harness
Oil pressure switch OFF
B+
—*
14————
3U — — — — —
3V Pressure control
solenoid (–)*
11Pressure control
solenoid valve •
Inspect using the wave profile.
(See F 1–4 4 In sp ectio n U sing A n
O scillo sc o pe ( Refe ren ce ).) •
Inspect pressure
control solenoid valve
• Inspect related
harness
—*
14————
3W — — — — — 3X — — — — —
3Y Pressure control
solenoid (+)*
11Pressure control
solenoid valve •
Inspect using the wave profile.
(See F 1–4 4 In sp ectio n U sing A n
O scillo sc o pe ( Refe ren ce ).) •
Inspect pressure
control solenoid valve
• Inspect related
harness
—*
14————
3Z — — — — —
3AA — — — — —
4A HO2S (Front)
heater control HO2S (Front)
heater•
Inspect using the wave profile.
(See F 1–4 4 In sp ectio n U sing A n
O scillo sc o pe ( Refe ren ce ).) •
Inspect HO2S (Front)
heater.
• Inspect related
harness
Terminal Signal Connected to Test condition
Voltage
(V) Action

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