CAN Buses

The Nissan Leaf uses multiple CAN buses. The two most researched and most important are EV-CAN and CAR-CAN.

EV-CAN

This bus connects the high-voltage components, plus the VCM. Devices on this bus:

• Vehicle Control Module (VCM)
• Traction Motor Inverter
• Power Delivery Module (PDM)
• Air Conditioning system
• Lithium Battery Controller (LBC)
• CAN Gateway

IT-CAN

The functionality of the IT-CAN bus is not well-documented. Devices on this bus:

• Telematics Control Unit (TCU)
• AV Control Unit
• CAN Gateway

External Links

• https://github.com/dalathegreat/leaf_can_bus_messages