mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Evaporator Temperature Sensor / Switch|Testing and Inspection|Page 4784 > < Coolant Temperature Sensor / Switch HVAC|Locations
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Evaporator Temperature Sensor / Switch: Testing and Inspection

On-Vehicle Inspection

1.  Remove the undercover and glove box. 
2.  Run the engine at idle speed and set the air conditioning system to MAX-COOLING.
3.  Press the ECO switch ON.
4.  Block the air inlet of the blower unit with a thick piece of paper to hasten evaporator cooling.
5.  After a few minutes, check that the compressor stops.

Note: The compressor stops when the temperature at the evaporator becomes 7°C (44.6°F).

6.  Press the ECO switch OFF, and check that the compressor operates.
7.  After a few minutes, check that the compressor stops again.

Note: The compressor stops when the temperature at the evaporator becomes 1°C (33.8°F).

Evaporator Temperature Sensor / Switch|Testing and Inspection|Page 4784 > < Coolant Temperature Sensor / Switch HVAC|Locations