Testing my Volvo C30 if its equipped with necessary wiring for the heated seats retrofit, if correct fuses are installed and if 12 volts is present under the seats with ignition on as it’s stated in the wiring diagram.

Already swapped the CCM (Climate Control Module) for one with all the extra buttons (seats heating, phone, audio source mode). Next will try to tap into the LIN-BUS communication to check messages send from the CCM. For that I’ll need TJA1020 chip.