Mazda CX 7. Manual — part 119
INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–15
01-13
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 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.
— Wastegate control solenoid valve terminal B and PCM terminal 2AA
— Wastegate control 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.
— Wastegate control solenoid valve terminal A and body ground
— Wastegate control solenoid valve terminal B and power supply
— Wastegate control solenoid valve terminal B and body ground
End Of Sie
WASTEGATE CONTROL
SOLENOID VALVE
WIRING HARNESS SIDE CONNECTOR
A
B
acxuuw00000032
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
acxuuw00000033
1871-1U-06B(01-13).fm 15 ページ 2006年3月15日 水曜日 午前10時44分
INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–16
WASTEGATE ACTUATOR INSPECTION[L3 WITH TC]
id011339800700
1. Remove the air hose and air duct. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH
TC])
2. Disconnect the hose from the wastegate actuator.
3. Plug the wastegate actuator as shown in the
figure.
4. Connect the vacuum pump to the port
5. Raise the pressure slowly and take a
measurement of the pressure when the rod stroke
is 1.5 mm {0.06 in}.
• If the rod does not move, replace the
turbocharger.
Specification (rod stroke: 1.5 mm {0.06 in})
78.0— 83.4 kPa {586— 625 mmHg, 23.1—
24.6 inHg}
End Of Sie
WM: TC
PLUG
ROD
WASTEGATE
ACTUATOR
49 H080 740A
acxuuw00000663
1.0
{0.039}
ROD STROKE (mm {in})
OPERA
TION PRESSURE
(kP
a {mmHg, inHg})
110 {825, 32}
100 {750, 30}
90 {675, 27}
80 {600, 24}
70 {525, 21}
60 {450, 18}
2.0
{0.079}
3.0
{0.12}
4.0
{0.16}
5.0
{0.20}
0.0
{0.0}
DEPRESSURIZATION
PRESSURIZATION
WASTEGATE ACTUATOR
OPERATION CHARACTERISTIC
acxuuw00000664
1871-1U-06B(01-13).fm 16 ページ 2006年3月15日 水曜日 午前10時44分
INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–17
01-13
TURBOCHARGER INSPECTION[L3 WITH TC]
id011339801000
Compressor Wheel Inspection
1. Remove the turbocharger. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
2. Visually inspect the compressor wheel from view
A for the cracks, damage, or bending on all the
compressor wheel blades.
• If there are any cracks or damage, replace the
turbocharger.
Note
• If there is contact between the compressor
wheel and compressor housing, there may
be cracks, damage, or bending on the blade
end area.
• If there are cracks, damage, or bending on
the compressor wheel, verify the following
after replacing the turbocharger.
— Intake air/exhaust system related
components
— Oil pipe damage
Turbine wheel inspection
1. Remove the turbocharger. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
2. Visually inspect the turbine wheel from view B for
the cracks, damage, or bending on all the turbine
wheel blades.
• If there are cracks, damage, or bending on the
turbine wheel, replace the turbocharger.
Note
• If there is contact between the turbine wheel
and turbine housing, there may be cracks,
damage, or bending on the blade end area.
• If there are cracks, damage, or bending on
the turbine wheel, verify the following after
replacing the turbocharger.
— Intake air/exhaust system related
components
— Oil pipe damage
End Of Sie
WM: ACCELERATOR PEDAL
ACCELERATOR PEDAL REMOVAL/INSTALLATION[L3 WITH TC]
id011339801400
1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
End Of Sie
A
COMPRESSOR
WHEEL
acxuuw00000477
TURBINE WHEEL
B
acxuuw00000478
1
Connector
2
Accelerator pedal
1
2
3
7.8—10.8 {80—110, 69—95}
N·m {kgf·cm, in·lbf}
7.8—10.8 {80—110, 69—95}
acxuuw00002531
1871-1U-06B(01-13).fm 17 ページ 2006年3月15日 水曜日 午前10時44分
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