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Ambient Temperature Sensor Inspection (Manual A/C)

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the front bumper. (See FRONT BUMPER REMOVAL/INSTALLATION .)
  3. Remove the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION (MANUAL A/C) .)
  4. Measure the temperature around the ambient temperature sensor and measure the resistance between the ambient temperature sensor terminals A and B.
    Fig 1: Ambient Temperature Sensor Connector Terminals
    G11431876Courtesy of MAZDA MOTORS CORP.
    Fig 2: Ambient Temperature Sensor Temperature Graph
    G09075846Courtesy of MAZDA MOTORS CORP.
  5. If the characteristics of the ambient temperature sensor are not as shown in the graph, replace the ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION (MANUAL A/C) .)
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