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Home >> Mazda >> 1990 >> 626 L4-2184cc 2.2L SOHC F2 >> Repair and Diagnosis >> Heating and Air Conditioning >> Evaporator Temperature Sensor / Switch >> Testing and Inspection
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Evaporator Temperature Sensor / Switch: Testing and Inspection

THERMOSWITCH

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 operate.
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).



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