Mazda 6. Manual - part 384

U–40

CONTROL SYSTEM 

End Of Sie

AMBIENT TEMPERATURE SENSOR INSPECTION

A6E854061764W02

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.

End Of Sie

CABIN TEMPERATURE SENSOR REMOVAL/INSTALLATION

A6E854061757W01

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.

End Of Sie

A6E8540W019

1

Air  hose

2

Cabin temperature sensor connector

3

Cabin temperature sensor

A6E8540W020

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.

End Of Sie

EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION

A6E854061022W01

1. Remove the evaporator temperature sensor from the A/C unit. (See 

U–18 A/C UNIT DISASSEMBLY/

ASSEMBLY

.)

End Of Sie

EVAPORATOR TEMPERATURE SENSOR INSPECTION

A6E854061022W02

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.

End Of Sie

A6E8540W021

A6E8540W019

U–42

CONTROL SYSTEM 

WATER TEMPERATURE SENSOR REMOVAL/INSTALLATION

A6E854061752W01

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.

End Of Sie

WATER TEMPERATURE SENSOR INSPECTION

A6E854061752W02

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.

End Of Sie

REFRIGERANT PRESSURE SWITCH REMOVAL/INSTALLATION

A6E854061503W01

1. Remove the battery.
2. Discharge the refrigerant from the system. (See 

U–9 RECOVERY

.) (See 

U–9 CHARGING

.)

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.

End Of Sie

1

Air  hose

2

Duct  (3)

3

Plate  spring

4

Water temperature sensor

A6E8540W023

A6E8540W024

1

Refrigerant pressure switch connector

2

Refrigerant pressure switch
(See 

U–42 Refrigerant Pressure Switch Installation 

Note

)

A6E8540W025

CONTROL SYSTEM 

U–43

U

REFRIGERANT PRESSURE SWITCH INSPECTION

A6E854061503W02

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

A6E8540W053

A6E8540W054

A6E8540W026

A6E8540W055