Micro:Maqueen Robot Car(V2.0) - electric scheme

I purchased the Micro kit: Maqueen Robot Car (V2.0) SKU: ROB0148, and while browsing the wiki and references I did not find the schematic for a better understanding of the hardware to create new functions in C or Python language outside the makecode environment .

Does anyone know where to find me?

Many thanks and happy hacking