Mazda 6. Manual — part 384
U–40
CONTROL SYSTEM
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AMBIENT TEMPERATURE SENSOR INSPECTION
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1. Measure the temperature around the ambient temperature sensor.
2. Measure the resistance between terminals of the
ambient temperature sensor.
• If the resistance is not as shown in the graph,
replace the ambient temperature sensor.
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CABIN TEMPERATURE SENSOR REMOVAL/INSTALLATION
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1. Disconnect the negative battery cable.
2. Remove the lower panel. (See
S–84 LOWER PANEL REMOVAL/INSTALLATION
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
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A6E8540W019
1
Air hose
2
Cabin temperature sensor connector
3
Cabin temperature sensor
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CONTROL SYSTEM
U–41
U
CABIN TEMPERATURE SENSOR INSPECTION
A6E854061757W02
1. Measure the temperature around the cabin temperature sensor.
2. Measure the resistance between terminals of the
cabin temperature sensor.
• If the resistance is not as shown in the graph,
replace the cabin temperature sensor.
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EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION
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1. Remove the evaporator temperature sensor from the A/C unit. (See
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EVAPORATOR TEMPERATURE SENSOR INSPECTION
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1. Turn the AUTO switch on.
2. Set the temperature control at MAX COLD (Turn the left).
3. Turn the A/C switch.
4. Set the RECIRCULATE mode.
5. Close all doors and windows.
6. Wait for 5 minutes.
7. Remove the glove compartment.
8. Disconnect the evaporator temperature sensor.
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.
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A6E8540W019
U–42
CONTROL SYSTEM
WATER TEMPERATURE SENSOR REMOVAL/INSTALLATION
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1. Disconnect the negative battery cable.
2. Remove the dashboard. (See
S–82 DASHBOARD REMOVAL/INSTALLATION
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
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WATER TEMPERATURE SENSOR INSPECTION
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1. Measure the temperature around the water temperature sensor.
2. Measure the resistance between terminals of the
water temperature sensor.
• If the resistance is not as shown in the graph,
replace the water temperature sensor.
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REFRIGERANT PRESSURE SWITCH REMOVAL/INSTALLATION
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1. Remove the battery.
2. Discharge the refrigerant from the system. (See
.) (See
3. Loosen the refrigerant pressure switch using two spanners.
4. Remove in the order indicated in the table.
5. Install in the reverse order of removal.
Refrigerant Pressure Switch Installation Note
1. Apply compressor oil to O-ring and connect the joint.
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1
Air hose
2
Duct (3)
3
Plate spring
4
Water temperature sensor
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1
Refrigerant pressure switch connector
2
Refrigerant pressure switch
(See
U–42 Refrigerant Pressure Switch Installation
)
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CONTROL SYSTEM
U–43
U
REFRIGERANT PRESSURE SWITCH INSPECTION
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1. Install the SST (gas charging set).
2. Disconnect the refrigerant pressure switch connector.
3. Verify the high-pressure side reading of the SST (manifold gauge) and continuity between the terminals of the
refrigerant pressure switch.
• If not as specified, replace the refrigerant pressure switch.
Triple-pressure Type
Dual-pressure Type
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A6E8540W054
A6E8540W026
A6E8540W055
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