Operation CHARM: Car repair manuals for everyone.
Home >> Mazda >> 1992 >> 323 L4-1600 1597cc >> Repair and Diagnosis >> Heating and Air Conditioning >> Evaporator Temperature Sensor / Switch >> Testing and Inspection
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Evaporator Temperature Sensor / Switch: Testing and Inspection

THERMOSWITCH

On-vehicle Inspection
1. Remove the glove box.
2. Run the engine at idle.





3. Turn OFF the A/C switch and set the blower switch to the highest position to operate the blower fan for a few minutes.
4. After a few minutes, turn OFF the blower switch and stop the engine.








5. Disconnect the thermoswitch connector and check for continuity between terminals of the switch.
6. If not as specified, replace the thermoswitch.

Note: The thermoswitch contacts will be open if the evaporator temperature is below -0.3 - 1.1°C (32 - 34°F).


Component Inspection







1. Immerse the sensing bulb in a container of ice water.
2. Check continuity between terminals of the switch as specified.
3. If not as specified, replace the thermoswitch.

pro multis · About Operation CHARM