Function Explanation (DTC Detection Outline)
WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
- If the engine coolant temperature detected by the ECT sensor No. 1 is not rising 6 °C {11 °F} or more during a 5 min
period after the engine is started, the PCM determines an ECT sensor No. 1 malfunction and stores a DTC.
Courtesy of MAZDA MOTORS CORP.