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Home >> Mazda >> 2020 >> CX-9 Signature >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Control System - Auto A/C >> Evaporator Temperature Sensor Inspection

Evaporator Temperature Sensor Inspection

NOTE:
  • Inspect the evaporator temperature sensor when it is installed to the A/C unit.
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the console side panel (passenger-side). (See CONSOLE SIDE PANEL REMOVAL/INSTALLATION .)
  3. Remove the side wall (passenger-side). (See SIDE WALL REMOVAL/INSTALLATION .)
  4. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  5. Switch the ignition ON (engine on).
  6. Set the fan speed to MAX HI.
  7. Set the temperature control to MAX COLD.
  8. Set to the RECIRCULATE mode.
  9. Turn the A/C switch off.
  10. Close all doors and windows.
  11. Wait for 5 min.
  12. Switch the ignition off.
  13. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  14. Disconnect the evaporator temperature sensor connector. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION .)
  15. Measure the temperature at the blower inlet.
  16. Measure the resistance between the evaporator temperature sensor terminals A and B.
    G11433639Courtesy of MAZDA MOTORS CORP.
    G11433640Courtesy of MAZDA MOTORS CORP.
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