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Evaporator Temperature Sensor Inspection (Manual A/C)

NOTE:
  • Inspect the evaporator temperature sensor when it is installed to the A/C unit.
  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  2. Remove the following parts:
    1. Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION .)
    2. Side wall (passenger-side) (See SIDE WALL REMOVAL/INSTALLATION .)
    3. Front heat duct (passenger-side) (See FRONT HEAT DUCT REMOVAL/INSTALLATION .)
  3. Connect the negative battery cable.
  4. Switch the ignition ON (engine on).
  5. Set the fan speed to MAX HI.
  6. Set the temperature control to MAX COLD.
  7. Set to the RECIRCULATE mode.
  8. Turn the A/C switch off.
  9. Close all doors and windows.
  10. Wait for 5 min.
  11. Switch the ignition off.
  12. Disconnect the negative battery cable.
  13. Disconnect the evaporator temperature sensor connector.
    G11431409Courtesy of MAZDA MOTORS CORP.
  14. Measure the temperature at the blower inlet.
  15. Measure the resistance between the evaporator temperature sensor terminals A and B.
    G11431410Courtesy of MAZDA MOTORS CORP.
    G13151081Courtesy of MAZDA MOTORS CORP.
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