Mazda CX 7. Manual — part 118
INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–11
01-13
End Of Sie
WM: AIR CLEANER
AIR CLEANER ELEMENT INSPECTION[L3 WITH TC]
id011339800800
1. Remove the air cleaner element. (See 01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH
TC].)
2. Verify that the air cleaner element surface is free of dirt.
• If there is dirt, use an air gun or similar tool to clean the element.
• If the replacement time limit has passed, replace the element.
End Of Sie
WM: CHARGE AIR COOLER
CHARGE AIR COOLER INSPECTION[L3 WITH TC]
id011339800900
1. Remove the charge air cooler duct.
2. Remove the charge air cooler cover. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH
TC].)
3. Remove the charge air cooler. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
4. Remove the air bypass valve. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
5. Plug ports A and B.
6. Verify that there is no air leakage when air is sent
from port C.
• If there is leakage, replace the charge air
cooler.
End Of Sie
WM: INTAKE-AIR SYSTEM
AIR BYPASS VALVE INSPECTION[L3 WITH TC]
id011339800500
1. Remove the charge air cooler duct.
2. Remove the air bypass valve. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
3. Connect the vacuum pump to the vacuum ports of
the air bypass valve.
Approx. value
PORT A
PORT B
PORT C
acxuuw00000509
PORT A
PORT B
VACUUM PORT
VACUUM PUMP
ROD
acxuuw00000287
VALVE OPERATION CHARACTERISTIC
P1=49.3—65.3 kpa {370—489 mmHg, 15.0—19.2 inHg}
P2=86.1—115.3 kpa {646—864 mmHg, 25.5—34.0 inHg}
VACUUM
VALVE
OPEN
ROD STROKE
(mm {in})
—P1
—P2
7.5 {0.30}
0.5 {0.02}
acxuuw00000286
1871-1U-06B(01-13).fm 11 ページ 2006年3月15日 水曜日 午前10時44分
INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–12
4. Verify that the airflow is as indicated in the table.
• If there is any malfunction, replace the air bypass valve.
End Of Sie
WM: THROTTLE ACTUATOR
THROTTLE ACTUATOR INSPECTION[L3 WITH TC]
id011339801300
Note
• Perform the following inspection only when directed.
Resistance Inspection
1. Disconnect the negative battery cable.
2. Disconnect the throttle body connector.
3. Measure the resistance between the throttle actuator terminals using a tester.
• If not as specified, replace the throttle body. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/
INSTALLATION[L3 WITH TC].)
• If as specified, carry out the “Circuit Open/Short Inspection”.
Specification
Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH TC].)
2. Inspect the following wiring harnesses for an
open or short circuit (continuity check).
Open circuit
• If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
— Throttle actuator terminal F and PCM terminal 2A
— Throttle actuator terminal E and PCM terminal 2B
Short circuit
• If there is continuity, there is a short circuit. Repair or replace the wiring harness.
— Throttle actuator terminal F and power supply
— Throttle actuator terminal F and ground
— Throttle actuator terminal E and power supply
— Throttle actuator terminal E and ground
End Of Sie
WM: VARIABLE TUMBLE SHUTTER VALVE ACTUATOR
Vacuum
(kPa {mmHg, inHg})
Valve operation
condition
Airflow between
port A— B
–66 {–496, –20}
or more
Open
Yes
–49 {–367, –14}
or less
Closed
No
Ambient temperature (
°C {°F})
Resistance (ohm)
Approx. 20 {68}
0.3— 100
E
F
THROTTLE ACTUATOR
WIRING HARNESS SIDE CONNECTOR
acxuuw00000024
2BE 2BA 2AW 2AS 2AO 2AK 2AG 2AC 2Y 2U 2Q 2M
2E
2A
2I
2BH 2BD 2AZ 2AV 2AR 2AN 2AJ 2AF 2AB 2X 2T 2P
2H
2D
2L
2BG 2BC 2AY 2AU 2AQ 2AM 2AI 2AE 2AA 2W 2S 2O
2G
2C
2K
2BF 2BB 2AX 2AT 2AP 2AL 2AH 2AD 2Z
2V 2R 2N
2F
2B
2J
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
1E
1A
1I
1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X
1T
1P
1H
1D
1L
1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O
1G
1C
1K
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z
1V
1R 1N
1F
1B
1J
PCM
WIRING HARNESS-SIDE CONNECTOR
acxuuw00000025
1871-1U-06B(01-13).fm 12 ページ 2006年3月15日 水曜日 午前10時44分
INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–13
01-13
VARIABLE SWIRL SHUTTER VALVE ACTUATOR INSPECTION[L3 WITH TC]
id011339801200
1. Remove the air hose. (See 01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
2. Disconnect the vacuum hose from the variable swirl control solenoid valve.
3. Connect a vacuum pump to the variable swirl shutter valve actuator.
4. Apply vacuum and verify that the rod moves.
• If the rod does not move, replace the intake manifold. (See 01-13-5 INTAKE AIR SYSTEM REMOVAL/
INSTALLATION[L3 WITH TC].)
End Of Sie
WM: VARIABLE TUMBLE SOLENOID VALVE
VARIABLE SWIRL SOLENOID VALVE INSPECTION[L3 WITH TC]
id011339801100
1. Remove the variable swirl solenoid valve.
2. Inspect the airflow between the ports under the
following conditions.
• If not as specified, replace the variable swirl
control solenoid valve.
• If as specified, carry out the “Circuit Open/
Short Inspection”.
Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH TC].)
2. Inspect the following wiring harness for open or
short circuit (continuity check).
Vacuum
kPa {mmHg, inHg}
Rod movement
–2.7 {–20, –0.7} or less
Not move
–33.4 {–251, –9.9} or more
Fully pulled
B
A
A
B
acxuuw00000026
Step
: Continuity
: Airflow
Terminal
Port
B
A
B
A
B+
GND
1
2
acxuuw00000027
A
B
VARIABLE SWIRL SOLENOID VALVE
WIRING HARNESS SIDE CONNECTOR
acxuuw00000028
FUSE BOX
(MAIN RELAY)
A
E
B
D
FRONT
acxuuw00002335
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INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–14
Open circuit
• If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
— Variable swirl solenoid valve terminal B and PCM terminal 2AS
— Variable swirl solenoid valve terminal A and main relay terminal E
Short circuit
• If there is continuity, there is a short circuit. Repair or replace the wiring harness.
— Variable swirl solenoid valve terminal A and body ground
— Variable swirl solenoid valve terminal B and power supply
— Variable swirl solenoid valve terminal B and body ground
End Of Sie
WM: AIR CHARGING PRESSURE COMPONENT
WASTEGATE CONTROL SOLENOID VALVE INSPECTION[L3 WITH TC]
id011339800600
1. Remove the wastegate control solenoid valve. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/
INSTALLATION[L3 WITH TC].)
2. Inspect the airflow between the ports under the
following conditions.
• If not as specified, replace the wastegate
control solenoid valve.
• If as specified, carry out the “Circuit Open/
Short Inspection”.
2BE 2BA 2AW 2AS 2AO 2AK 2AG 2AC 2Y 2U 2Q 2M
2E
2A
2I
2BH 2BD 2AZ 2AV 2AR 2AN 2AJ 2AF 2AB 2X 2T 2P
2H
2D
2L
2BG 2BC 2AY 2AU 2AQ 2AM 2AI 2AE 2AA 2W 2S 2O
2G
2C
2K
2BF 2BB 2AX 2AT 2AP 2AL 2AH 2AD 2Z
2V 2R 2N
2F
2B
2J
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
1E
1A
1I
1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X
1T
1P
1H
1D
1L
1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O
1G
1C
1K
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z
1V
1R 1N
1F
1B
1J
PCM
WIRING HARNESS-SIDE CONNECTOR
acxuuw00000029
A
B
B
A
acxuuw00000030
Step
: Continuity
: Airflow
Terminal
Port
B
A
B
A
B+
GND
1
2
acxuuw00000031
1871-1U-06B(01-13).fm 14 ページ 2006年3月15日 水曜日 午前10時44分
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