Contents Wiring diagrams Section: Control System (HVAC): Removal & Installation All sections

Bolt Removal/Installation Note Mazda 3 BK facelift

Control System (HVAC): Removal & Installation 15 illustrations ~520 words

Bolt Removal/Installation Note

Note. If there are only 2 prepackaged bolts available when replacing the compression with a repair part, select bolts from the replaced unit of the same length as the prepackaged bolts.

  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.

Scheme 68

Scheme 68: MAGNETIC CLUTCH ADJUSTMENT

Scheme 69

Scheme 69
  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. 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. Clearance 0.3-0.5 mm {0.012-0.019 in}

Scheme 70

Scheme 70: MAGNETIC CLUTCH INSPECTION [L3 WITH TC]

Scheme 71

Scheme 71
  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 72

Scheme 72: MAGNETIC CLUTCH INSPECTION [LF, L3]

Scheme 73

Scheme 73
  1. Connect battery positive voltage to magnetic clutch terminal A and the A/C compressor body to ground.
  2. Verify that the magnetic clutch operates. If there is any malfunction, replace the stator and thermal protector.

Scheme 74

Scheme 74: SOLAR RADIATION SENSOR REMOVAL/INSTALLATION
  1. Disconnect the negative battery cable.
  2. Pry the solar radiation sensor from the dashboard using a flathead screwdriver wrapped with protective tape.
  3. Remove in the order indicated in the table. CAUTION: After the solar radiation sensor removal, the sensor connector could fall in the dashboard making the installation difficult. Therefore, hold the rooted end of the sensor connector using a clip or similar tool to prevent it from falling.
  4. Install in the reverse order of removal.

Scheme 75

Scheme 75: SOLAR RADIATION SENSOR INSPECTION

Scheme 76

Scheme 76
  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 77

Scheme 77: AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION

Scheme 78

Scheme 78
  1. Disconnect the negative battery cable.
  2. Remove in the order indicated in the table. LF, L3 L3 with TC
  3. Install in the reverse order of removal.

Scheme 79

Scheme 79: AMBIENT TEMPERATURE SENSOR INSPECTION
  1. Measure the temperature around the ambient temperature sensor and measure the resistance between the ambient temperature sensor terminal. If the characteristics of the ambient temperature sensor are not as shown in the graph, replace the ambient temperature sensor.

Scheme 80

Scheme 80: PASSENGER COMPARTMENT TEMPERATURE SENSOR REMOVAL/INSTALLATION
  1. Disconnect the negative battery cable.
  2. Remove the lower panel. (See «LOWER PANEL REMOVAL/INSTALLATION»(ref-274485-S04523527642007121800000) .)
  3. Remove in the order indicated in the table.
  4. Install in the reverse order of removal.

Scheme 81

Scheme 81: PASSENGER COMPARTMENT TEMPERATURE SENSOR INSPECTION

Scheme 82

Scheme 82
  1. Measure the temperature around the passenger compartment temperature sensor and measure the resistance between passenger compartment temperature sensor terminals B and D. If the characteristics of the passenger compartment temperature sensor are not as shown in the graph, replace the passenger compartment temperature sensor.
  2. Connect battery positive voltage to passenger compartment temperature sensor terminal A and connect terminal C to ground to verify fan operation. If there is any malfunction, replace the passenger compartment temperature sensor.