Canbus Shield won't connect to device

Im having a horrible time getting this to work, I have a can bus shield and I’m trying to connect my Arduino to One specific car device directly but not through the car. I cannot get it to read. I have made sure the device does transmit in CAN and I’ve followed about everything I know of.

is this possible or do I need to connect this device to another controller and communicate to it through that device? Thanks.