Ambient Temperature Sensor Inspection

WARNING: This page is about a different car, the 2008 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Measure the temperature around the ambient temperature sensor and measure the resistance between the ambient temperature sensor terminal.
- If the characteristics of the ambient temperature sensor are not as shown in the graph, replace the ambient temperature sensor.
  
  Fig 1: Ambient Temperature/Resistance graph
  Courtesy of MAZDA MOTORS CORP.