Function Explanation (DTC Detection Outline)

The PCM performs diagnosis of the battery cooling system for the Mazda M Hybrid Boost battery based on the A/C compressor operation status, refrigerant temperature, and the refrigerant pressure.
The PCM performs diagnosis when each of the preconditions during the drive cycle is met. If a malfunction is detected, pending code is stored.
If the PCM determines that the malfunction recurs from the next drive cycle and thereafter, it stores a DTC and turns on the check engine light.