Mazda CX 7. Manual — part 131
EMISSION SYSTEM [L3 WITH TC]
01-16–9
01-16
PURGE SOLENOID VALVE REMOVAL/INSTALLATION[L3 WITH TC]
id011639803500
1. Disconnect the negative battery cable.
2. Remove the charge air cooler duct.
3. Remove in the order indicated in the table.
.
4. Install in the reverse order of removal.
End Of Sie
PURGE SOLENOID VALVE INSPECTION[L3 WITH TC]
id011639800900
Airflow Inspection
Note
• Perform the following test only when directed.
1. Disconnect the negative battery cable.
2. Remove the purge solenoid valve. (See 01-16-9 PURGE SOLENOID VALVE REMOVAL/INSTALLATION[L3
WITH TC].)
3. Inspect airflow between the ports under the following conditions.
• If not as specified, replace the purge solenoid valve. (See 01-16-9 PURGE SOLENOID VALVE REMOVAL/
INSTALLATION[L3 WITH TC].)
• If as specified, carry out the “Circuit Open/
Short Inspection”.
1
Connector
2
Vacuum hose
3
Purge solenoid valve
3
1
2
2
acxuuw00000217
A
B
A
B
acxuuw00000046
Step
: Continuity
: Airflow
Terminal
Port
B
A
B
A
B+
GND
1
2
acxuuw00000045
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EMISSION SYSTEM [L3 WITH TC]
01-16–10
Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See 01-40-6 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.
— Purge solenoid valve terminal A and main relay terminal E
— Purge solenoid valve terminal B and PCM terminal 2AB
Short circuit
• If there is continuity, there is a short circuit. Repair or replace the wiring harness.
— Purge solenoid valve terminal A and body ground
— Purge solenoid valve terminal B and power supply
— Purge solenoid valve terminal B and body ground
End Of Sie
WM: CHECK VALVE (EMISSION SYSTEM)
PURGE SOLENOID VALVE
WIRING HARNESS SIDE CONNECTOR
A
B
acxuuw00000047
FUSE BOX
(MAIN RELAY)
A
E
B
D
FRONT
acxuuw00002335
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
acxuuw00000048
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EMISSION SYSTEM [L3 WITH TC]
01-16–11
01-16
CHECK VALVE INSPECTION[L3 WITH TC]
id011639801400
1. Remove the charge air cooler duct.
2. Disconnect the vacuum hose connected between the check valve and the purge solenoid valve from the purge
solenoid valve.
3. Disconnect the vacuum hose connected between the check valve and the intake manifold from the intake
manifold.
4. Blow through the check valve and verify that air flows as specified.
• If not as specified, replace the check valve.
Specification
*
: The check valve is normal if the aeration to port B
is 3.5 kPa/min {0.03 kgf/cm2 min, 0.5 psi/min}
or less when 130 kPa {1.32 kgf/cm2, 18.9 psi}
is applied to port A.
End Of Sie
WM: EGR VALVE
EGR VALVE REMOVAL/INSTALLATION[L3 WITH TC]
id011639801000
1. Disconnect the negative battery cable.
2. Remove the charge air cooler duct.
3. Disconnect the EGR valve connector.
4. Remove the air hose and air duct. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH
TC])
5. Drain the engine coolant. (See01-12-5 ENGINE COOLANT REPLACEMENT[L3 WITH TC].)
6. Remove in the order indicated in the table.
7. Install in the reverse order of removal.
End Of Sie
Condition
Airflow
Air applied from port A to B
Yes
Air applied from port B to A
No*
PORT B
PORT A
acxuuw00000214
1
Water hose
2
EGR valve
1
2
R
20—30 N·m
{2.1—3.0 kgf·m,
15—22 ft·lbf}
acxuuw00000511
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EMISSION SYSTEM [L3 WITH TC]
01-16–12
EGR VALVE INSPECTION[L3 WITH TC]
id011639801100
Resistance Inspection
Note
• Perform the following test only when directed.
1. Disconnect the negative battery cable.
2. Inspect resistance of the EGR valve coils.
• If not as specified, replace the EGR valve.
(See 01-16-11 EGR VALVE REMOVAL/
INSTALLATION[L3 WITH TC])
• If as specified, carry out the “Circuit Open/
Short Inspection”.
Terminals
Resistance (ohm)
C— E
C— A
D— B
D— F
8— 9
E
C
D
A
B
F
MAIN
RELAY
PCM
EGR VALVE
2AN
2AR
2AQ
2AM
acxuuw00000049
E
C
F
D
B
A
acxuuw00000050
1871-1U-06B(01-16).fm 12 ページ 2006年3月15日 水曜日 午前10時48分
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