Mazda CX 7. Manual — part 142
CONTROL SYSTEM [L3 WITH TC]
01-40–9
01-40
1AO
— —
—
—
—
1AP
— —
—
—
—
1AQ
Cruise control
switch
Cruise control
switch
Ignition switch
to the ON
position
ON/OFF switch
pressed in
Approx. 0
• Cruise control switch
• Related wiring
harness
CANCEL switch
pressed in
Approx.
1.1
SET/COAST
switch pressed
in
Approx.
3.1
RES/ACCEL
switch pressed
in
Approx.
4.2
Except above
Approx.
5.0
1AR
IAT sensor ground
MAF/IAT sensor
Under any condition
Below 1.0
• Related wiring
harness
1AS
EVAP leak
detection pump
(pump)
EVAP leak
detection pump
Ignition switch to the ON position
Below 1.0
• EVAP leak detection
pump
• Related wiring
harness
Idling
B+
1AT
Main relay control
Main relay
Ignition switch off after 10 s
B+
• Main relay
• Related wiring
harness
Ignition switch to the ON position
Below 1.0
1AU
A/C on signal
Refrigerant
pressure switch
(high, low)
Idle
A/C switch and
fan switch on
B+
• Refrigerant pressure
switch (high, low)
• Related wiring
harness
1AV
APP sensor ground APP sensor
Under any condition
Below 1.0
• Related wiring
harness
1AW
Injector control
Fuel Injector relay
Under any condition
Below 1.0
• Related wiring
harness
1AX
Drive-by-wire relay
Drive-by-wire relay
Ignition switch off after 10 s
B+
• Related wiring
harness
Ignition switch to the ON position
Below 1.0
1AY
Ignition switch
Ignition switch
Ignition switch off
Below 1.0
• Related wiring
harness
Ignition switch to the ON position
B+
1AZ
Ground
Ground
Under any condition
Below 1.0
• Related wiring
harness
1BA
Back-up power
supply
Battery (positive
terminal)
Under any condition
B+
• Battery
• Related wiring
harness
1BB
Ground
Ground
Under any condition
Below 1.0
• Related wiring
harness
1BC
Sensor ground
HO2S (rear)
Under any condition
Below 1.0
• HO2S (rear)
• Related wiring
harness
1BD
Ground
Ground
Under any condition
Below 1.0
• Related wiring
harness
1BE
B+
Main relay
Ignition switch off after 10 s
Below 1.0
• Battery
• Related wiring
harness
Ignition switch to the ON position
B+
1BF
Drive-by-wire relay
Drive-by-wire relay
Ignition switch off after 10 s
Below 1.0
• Related wiring
harness
Ignition switch to the ON position
B+
1BG
Ground
Ground
Under any condition
Below 1.0
• Related wiring
harness
1BH
Ground
Ground
Under any condition
Below 1.0
• Related wiring
harness
2A
Throttle actuator
control (+)
Throttle body
Ignition switch off
Approx.
1.5
• Throttle actuator
• Related wiring
harness
Ignition switch to the ON position
B+
Terminal
Signal
Connected to
Test condition
Voltage
(V)
Inspection item
1871-1U-06B(01-40).fm 9 ページ 2006年3月15日 水曜日 午前10時53分
CONTROL SYSTEM [L3 WITH TC]
01-40–10
2B
Throttle actuator
control (–)
Throttle body
Ignition switch off
Approx.
1.5
• Throttle actuator
• Related wiring
harness
Ignition switch to the ON position
B+
2C
HO2S (front) heater
control
HO2S (front)
heater
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• HO2S (front)
• Related wiring
harness
2D
HO2S (rear) heater
control
HO2S (rear)
heater
• Engine speed above 5,000
rpm (Heater control not
operating)
B+
• HO2S (rear) heater
• Related wiring
harness
2E
Variable swirl
solenoid valve
power supply
Main relay,
variable swirl
solenoid valve,
CMP sensor
Ignition switch off after 10 s
Below 1.0
• Main relay
• Related wiring
harness
Ignition switch to the ON position
B+
2F
High pressure fuel
pump control (+)
High pressure fuel
pump
Ignition switch off
Below 1.0
• High pressure fuel
pump
• Related wiring
harness Related
wiring harness
Ignition switch to the ON position
Approx.
9.7
Idle
Approx.
9.4
2G
High pressure fuel
pump control (–)
High pressure fuel
pump
Ignition switch off
Below 1.0
• High pressure fuel
pump
• Related wiring
harness Related
wiring harness
Ignition switch to the ON position
Approx.
9.6
Idle
Approx.
8.6
2H
Ground
Body ground
Under any condition
Below 1.0
• Related wiring
harness
2I
Constant voltage
(Vref)
Fuel pressure
sensor
Ignition switch to the ON position
Approx.
5.0
• Related wiring
harness
2J
— —
—
—
—
2K
— —
—
—
—
2L
— —
—
—
—
2M
Sensor ground
HO2S (front)
Under any condition
Below 1.0
• Related wiring
harness
2N
Boost air
temperature
MAP/Boost air
temperature
sensor
Ignition switch
to the ON
position
IAT 20
°C
{68
°F}
2.4—2.6
• Boost air temperature
sensor
• Related wiring
harness
IAT 30
°C
{86
°F}
1.7—1.9
2O
— —
—
—
—
2P
Sensor ground
Fuel pressure
sensor
Under any condition
Below 1.0
• Fuel pressure sensor
• Related wiring
harness
2Q
HO2S (rear)
HO2S (rear)
Idle
0—1
• HO2S (rear)
• Related wiring
harness
2R
Fuel pressure
sensor
Fuel pressure
sensor
Ignition switch off
Below 1.0
• Fuel pressure sensor
• Related wiring
harness
Ignition switch to the ON position
Approx.
1.1
Idle
Approx.
1.7
2S
CMP
CMP sensor
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• CMP sensor
• Related wiring
harness
2T
PSP
PSP switch
Idle
Steering wheel
at straight
ahead position
B+
• PSP switch
• Power steering
system
• Related wiring
harness
While turning
steering wheel
Below 1.0
Terminal
Signal
Connected to
Test condition
Voltage
(V)
Inspection item
1871-1U-06B(01-40).fm 10 ページ 2006年3月15日 水曜日 午前10時53分
CONTROL SYSTEM [L3 WITH TC]
01-40–11
01-40
2U
Knocking (+)
KS
Ignition switch to the ON position
(Use digital type voltmeter,
because measurement voltage
will be detected less than true
voltage when using analog type
voltmeter)
Approx.
4.3
• KS
• Related wiring
harness
2V
Knocking (–)
KS
Ignition switch to the ON position
(Use digital type voltmeter,
because measurement voltage
will be detected less than true
voltage when using analog type
voltmeter)
Below 1.0
• KS
• Related wiring
harness
2W
CKP
CKP sensor
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• CKP sensor
• Related wiring
harness
2X
Internal ground
KS, CMP sensor,
CKP sensor,
HO2S (Front),
Variable swirl
solenoid valve, TP
sensor
Under any condition
Below 1.0
• Related wiring
harness
2Y
HO2S (front)
calibration resistor
HO2S (front)
Ignition switch off after 10s
Below 1.0
• HO2S (front)
• Related wiring
harness
Ignition switch to the ON position
Approx.
3.9
2Z
HO2S (front) power
supply
HO2S (front)
Idle (after warm up)
Approx.
6.2
• HO2S (front)
• Related wiring
harness
2AA
Wastegate control
solenoid valve
Wastegate control
solenoid valve
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Wastegate control
solenoid valve
• Related wiring
harness
2AB
Purge solenoid
valve
Purge solenoid
valve
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Purge solenoid valve
• Related wiring
harness
2AC
HO2S (front) VSIP
HO2S (front)
Idle (after warm up)
Approx.
3.7
• HO2S (front)
• Related wiring
harness
2AD
HO2S (front) IP+
HO2S (front)
Idle (after warm up)
Approx.
3.7
• HO2S (front)
• Related wiring
harness
After racing
2.1—4.8
2AE
Variable swirl
shutter valve
monitor
Variable swirl
shutter valve
switch
variable swirl shutter valve close
Below 1.0
• Variable swirl shutter
valve switch
• Related wiring
harness
variable swirl shutter valve open
B+
2AF
OCV control
OCV
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• OCV valve
• Related wiring
harness
2AG
Manifold absolute
pressure
MAP sensor
Ignition switch to the ON position)
Approx.
1.9
• MAP sensor
• Related wiring
harness
Idle (after warm up)
Below 1.0
2AH
ECT
ECT sensor
Ignition switch
to the ON
position
ECT 20
°C
{68
°F}
3.04—
3.14
• ECT sensor
• Related wiring
harness
ECT 60
°C
{140
°F}
1.29—
1.39
2AI
Generator field coil
control
Generator
(terminal D)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Generator
• Related wiring
harness
2AJ
Generator output
voltage
Generator
(terminal P)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Generator
• Related wiring
harness
Terminal
Signal
Connected to
Test condition
Voltage
(V)
Inspection item
1871-1U-06B(01-40).fm 11 ページ 2006年3月15日 水曜日 午前10時53分
CONTROL SYSTEM [L3 WITH TC]
01-40–12
2AK
TP sensor (No. 1)
TP sensor (No. 1)
Ignition switch
to the ON
position
APP is released
0.4—0.6
• TP sensor
• Related wiring
harness
APP is
depressed
4.7—4.9
2AL
TP sensor (No. 2)
TP sensor (No. 2)
Ignition switch
to the ON
position
APP is released
4.4—4.6
• TP sensor
• Related wiring
harness
APP is
depressed
0.1—0.3
2AM
EGR valve #3 coil
control
EGR valve
(terminal A)
Ignition switch to the ON position
B+
• EGR valve
• Related wiring
harness
Ignition switch off
Below 1.0
2AN
EGR valve #6 coil
control
EGR valve
(terminal F)
Ignition switch to the ON position
B+
• EGR valve
• Related wiring
harness
Idle
B+
2AO
Constant voltage
(Vref)
TP sensor
Ignition switch to the ON position
Approx.
5.0
• TP sensor
• Related wiring
harness
2AP
TP sensor Ground
TP sensor
Under any condition
Below 1.0
• TP sensor
• Related wiring
harness
2AQ
EGR valve #1 coil
control
EGR valve
(terminal E)
Ignition switch to the ON position
Below 1.0
• EGR valve
• Related wiring
harness
Idle
Below 1.0
2AR
EGR valve #4 coil
control
EGR valve
(terminal B)
Ignition switch to the ON position
B+
• EGR valve
• Related wiring
harness
Ignition switch off
Below 1.0
2AS
Variable swirl
control
Variable swirl
solenoid valve
ECT 62
°C {144 °F} or more and
engine speed 3,250 rpm or more
B+
• Variable swirl
solenoid valve
• Related wiring
harness
ECT less than 62
°C {144 °F} and
engine speed less than3,250 rpm
Below 1.0
2AT
IGT4
Ignition coil (No.4
cylinders)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Ignition coil No.4
• Related wiring
harness
2AU
Constant voltage
(Vref)
MAP sensor
Ignition switch to the ON position
Approx.
5.0
• Related wiring
harness
2AV
Sensor ground
MAP sensor
Under any condition
Below 1.0
• Related wiring
harness
2AW
IGT2
Ignition coil (No.2
cylinders)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Ignition coil No.2
• Related wiring
harness
2AX
IGT3
Ignition coil (No.3
cylinders)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Ignition coil No.3
• Related wiring
harness
2AY
Sensor ground
ECT sensor
Under any condition
Below 1.0
• ECT sensor
• Related wiring
harness
2AZ
Fuel injection
(–)(#4)
Fuel injector
(No.4)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Fuel injector No.4
• Related wiring
harness
2BA
IGT1
Ignition coil (No.1
cylinders)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Ignition coil No.1
• Related wiring
harness
2BB
Fuel injection
(–)(#1)
Fuel injector
(No.1)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Fuel injector No.1
• Related wiring
harness
2BC
Fuel injection
(–)(#2)
Fuel injector
(No.2)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Fuel injector No.2
• Related wiring
harness
2BD
Fuel injection
(–)(#3)
Fuel injector
(No.3)
• Inspect using the wave profile.
(See01-40-6 PCM inspection
preparation.)
• Fuel injector No.3
• Related wiring
harness
2BE
Fuel injector power
supply 1
Fuel Injector relay
Ignition switch off
Below 1.0
• Fuel Injector relay
• Related wiring
harness
Ignition switch to the ON position
B+
Terminal
Signal
Connected to
Test condition
Voltage
(V)
Inspection item
1871-1U-06B(01-40).fm 12 ページ 2006年3月15日 水曜日 午前10時53分
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