Mazda CX 7. Manual - part 118

 

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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

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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

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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

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