...
It'd also be helpful to familiarize yourself with the ICs on the board.
CAN Controller (U1): http://ww1.microchip.com/downloads/en/DeviceDoc/MCP2515-Stand-Alone-CAN-Controller-with-SPI-20001801J.pdf
CAN Transceiver (U2): http://www.ti.com/lit/ds/symlink/tcan332.pdf
Precharge Control Load Switch (U3): https://www.onsemi.com/pub/Collateral/NCP45520-D.PDF
Charge Pump Voltage Converter (U4): https://www.onsemi.com/pub/Collateral/NCP45520-D.PDF
Opto-isolator (U5): https://uk.rs-online.com/webdocs/0ad5/0900766b80ad5e24.pdf
CMOS SR Latch (U6): https://www.onsemi.com/pub/Collateral/NCP45520-D.PDF
Isolated DC/DC Converter (U9): https://uk.rs-online.com/webdocs/0ad5/0900766b80ad5e24.pdf
Initial board validation:
...