Control System (HVAC): Removal & Installation Mazda CX-7 I

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.

Scheme 83

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.

Scheme 84

1. When installing a new pressure plate, A/C compressor pulley, stator, or A/C compressor body, replace the snap ring.

Scheme 85

Scheme 86

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}

Scheme 87

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.

Scheme 88

1. Disconnect the negative battery cable.
2. Remove the glove compartment. (See «RESISTOR REMOVAL/INSTALLATION»(ref-269019-S42143967682007102700000) .)
3. Remove in the order indicated in the figure.
4. Install in the reverse order of removal.

Scheme 89

1. Verify that the resistance between the terminals of the resistor is as shown in the table. If not as specified, replace the resistor. TERMINAL RESISTANCE SPECIFICATION Terminal Resistance (ohm) A-D 0.22 A-B 0.87 A-C 2.76

Scheme 90

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.

Scheme 91

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.

EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION

1. Remove the evaporator temperature sensor from the A/C unit. (See «A/C UNIT DISASSEMBLY/ASSEMBLY»(ref-269018-S30148931032007102700000) ).

Scheme 92

1. Set the fan speed MAX HI.
2. Set the temperature control at MAX COLD (Turn the left).
3. Turn the A/C switch off.
4. Set the RECIRCULATE mode.
5. Close all doors and windows.
6. Wait for 5 min.
7. Remove the glove compartment. (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-269050-S11046456102007102700000) ).
8. Disconnect the evaporator temperature sensor connector.
9. Measure the temperature at the blower inlet.
10. Measure the resistance between terminals of the evaporator temperature sensor. If the resistance is not as shown in the graph, replace the evaporator temperature sensor.

Scheme 93

1. Disconnect the negative battery cable.
2. Remove the glove compartment. (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-269050-S11046456102007102700000) ).
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.

Scheme 94

Scheme 95

1. Connect battery positive voltage to terminal D or F and ground to terminal F or D of the air intake actuator.
2. Verify that the air intake actuator operates as shown below. If there is any malfunction, replace the air intake actuator. CONNECTION MOVEMENT REFERENCE Connection Movement B+ GND D F RECIRCULATE --> FRESH F D FRESH --> RECIRCULATE

Scheme 96

1. Disconnect the negative battery cable.
2. Remove the glove compartment. (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-269050-S11046456102007102700000) ).
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.

Refrigerant Pressure Switch Installation Note

1. Apply compressor oil to O-ring and connect the joint.

Scheme 97

Scheme 98

Scheme 99

1. Install the manifold gauge.
2. Disconnect the refrigerant pressure switch connector.
3. Verify the high-pressure side reading of the manifold gauge and continuity between the terminals of the refrigerant pressure switch. If the continuity is not normal, replace the refrigerant pressure switch.

Scheme 100

1. Disconnect the negative battery cable.
2. Remove the dashboard under cover (driver's side).
3. Press out the solar radiation sensor with its connector from under the instrument panel.
4. Remove in the order indicated in the table.
5. Install in the reverse order of removal.

Scheme 101

Scheme 102

1. Shine a fluorescent light or expose the solar radiation sensor to natural sunlight.
2. Connect the positive (+) lead to terminal A and the negative (-) lead to terminal B of the solar radiation sensor, and verify that the voltages are as shown in the table. If the voltage is not as specified, replace the solar radiation sensor.

Scheme 103

1. Disconnect the negative battery cable.
2. Remove the following parts: Front scuff plate inner (driver's side). (See «FRONT SCUFF PLATE REMOVAL/INSTALLATION»(ref-269050-S34251263902007102700000) ). Front side trim (driver's side). (See «FRONT SIDE TRIM REMOVAL/INSTALLATION»(ref-269050-S13516748582007102700000) ). Console panel. (See «CONSOLE PANEL REMOVAL/INSTALLATION»(ref-269050-S29358925182007102700000) ). Console. (See «CONSOLE REMOVAL/INSTALLATION»(ref-269050-S01041673842007102700000) ). Hood release lever. (See «HOOD LATCH AND RELEASE LEVER REMOVAL/INSTALLATION»(ref-269047-S41720534972007102700000) ). Lower panel (See «LOWER PANEL REMOVAL/INSTALLATION»(ref-269050-S05344216152007102700000) ).
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.

Scheme 104

1. Measure the temperature around the passenger compartment temperature sensor.
2. Measure the resistance between terminals of the passenger compartment temperature sensor. If the resistance is not as shown in the graph, replace the passenger compartment temperature sensor.

Scheme 105

1. Disconnect the negative battery cable.
2. Remove the under cover.
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.