Mazda CX 7. Manual - part 295

 

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Mazda CX 7. Manual - part 295

 

 

CONTROL SYSTEM 

07-40–5

07-40

POWER METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR (POWER MOS FET) INSPECTION

id074000800300

1. Verify that the resistance between the terminals of 

the power MOS FET is as shown in the table.

• If there is any malfunction, replace the power 

MOS FET.

End Of Sie

WM: MAGNETIC CLUTCH

MAGNETIC CLUTCH DISASSEMBLY/ASSEMBLY

id074000800400

1. Disassemble in the order indicated in the table.

2. Assemble in the reverse order of disassembly.
3. Adjust the magnetic clutch clearance. (See 07-40-

6 MAGNETIC CLUTCH ADJUSTMENT.)

Bolt Removal/Installation Note

1. When removing or installing the bolt, hold the 

pressure plate in place as shown in the figure.

2. When installing a new A/C compressor body, 

replace the bolt.

Stator and Thermal Protector Removal Note

1. After removing the stator and thermal protector, completely remove the silicone adhering to the A/C 

compressor side.

Tester lead

Resistance (kilohm)

+

A

B

A

E

6.9

B

A

Continuity

B

E

Continuity

E

A

6.9

E

B

B

E

A

A

B

E

*

*

*

4.7 KILOHMS

2.2 KILOHMS

1 KILOHM

acxuuw00000717

1

Bolt
(See 07-40-5 Bolt Removal/Installation Note.)

2

Pressure plate

3

Shim

4

Snap ring
(See 07-40-6 Snap Ring Installation Note.)

5

A/C compressor pulley

6

Screw
(See 07-40-6 Screw Installation Note.)

7

Clamp
(See 07-40-6 Clamp Installation Note.)

8

Screw
(See 07-40-6 Screw Installation Note.)

9

Stator and thermal protector
(See 07-40-5 Stator and Thermal Protector 
Removal Note.)
(See 07-40-6 Stator and Thermal Protector 
Installation Note.)

10

A/C compressor body

N·m {kgf·m, ft·lbf}

9

8

7

5

4

3

1

2

10

6

15 {1.5, 11}

A

A

acxuuw00000778

A/C COMPRESSOR

BOLT

acxuuw00002309

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CONTROL SYSTEM 

07-40–6

Stator and Thermal Protector Installation Note

1. Apply approx. 1 g {0.04 oz} of silicone (Shin-Etsu 

Silicone KE-347W or similar) to the contact 
surface of the thermal protector, then thoroughly 
install it onto the A/C compressor, leaving no 
gaps.

Screw Installation Note

1. When installing a new stator and thermal protector, replace the screw.

Clamp Installation Note

1. When installing a new stator and thermal protector, replace the clamp.

Snap Ring Installation Note

1. When installing a new pressure plate, A/C 

compressor pulley, stator, or A/C compressor 
body, replace the snap ring.

End Of Sie

MAGNETIC CLUTCH ADJUSTMENT

id074000800500

1. Measure the clearance around the entire 

circumference between the pressure plate and A/
C compressor pulley using a thickness gauge.

2. Verify that the clearance is within the 

specification.

• If not within the specification, remove the 

pressure plate and adjust the clearance by 
changing the shim (0.2 mm {0.008 in}, 0.5 
mm {0.02 in}
) or the number of shims.

Magnetic clutch clearance

0.3— 0.5 mm {0.012— 0.019 in}

End Of Sie

SILICONE

SEALANT

acxuuw00002310

SNAP RING

SHAFT

A/C COMPRESSOR
PULLEY

acxuuw00002311

A/C COMPRESSOR
PULLEY

PRESSURE PLATE

acxuuw00001569

SHIM

A/C COMPRESSOR

acxuuw00001570

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CONTROL SYSTEM 

07-40–7

07-40

MAGNETIC CLUTCH INSPECTION

id074000800600

1. Connect battery positive voltage to terminal A of 

magnetic clutch and ground to A/C compressor 
body.

2. Verify that the magnetic clutch operates.

• If there is any malfunction, replace the stator 

and thermal protector.

End Of Sie

WM: RESISTOR

RESISTOR REMOVAL/INSTALLATION

id074000800700

1. Disconnect the negative battery cable.
2. Remove the glove compartment. (See 07-40-7 RESISTOR REMOVAL/INSTALLATION.)
3. Remove in the order indicated in the table.

4. Install in the reverse order of removal.

End Of Sie

RESISTOR INSPECTION

id074000800800

1. Verify that the resistance between the terminals of 

the resistor is as shown in the table.

• If not as specified, replace the resistor.

End Of Sie

WM: BLOWER MOTOR

+

-

A6E8540W015

A

A

A6E8540W016

1

Resistor connector

2

Resistor

1

2

acxuuw00000718

Terminal

Resistance (ohm)

A— D

0.22

A— B

0.87

A— C

2.76

D

B

A

C

A

B

C

D

0.22 OHM

0.65 OHM

1.89 OHMS

acxuuw00000977

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CONTROL SYSTEM 

07-40–8

BLOWER MOTOR REMOVAL/INSTALLATION

id074000800900

1. Disconnect the negative battery cable.
2. Remove the dashboard under cover (passenger’s side).
3. Remove in the order indicated in the table.

4. Install in the reverse order of removal.

End Of Sie

BLOWER MOTOR INSPECTION

id074000801000

1. Connect battery positive voltage to terminal B and 

ground to terminal A of the blower motor and 
verify its operation.

• If not as specified, replace the blower motor.

End Of Sie

WM: EVAPORATOR TEMPERATURE SENSOR

EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION

id074000801100

1. Remove the evaporator temperature sensor from the A/C unit. (See 07-11-4 A/C UNIT DISASSEMBLY/

ASSEMBLY.)

End Of Sie

1

Blower motor connector

2

Blower motor

1

2

acxuuw00000720

M

A

B

A

B

acxuuw00000721

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