CAN Gateway

The CAN Gateway is a module in the ZE1 Nissan Leaf. It connects multiple CAN Buses together. It is described in the service manual as a 6 channel CAN gateway, implying that it can communicate on up to 6 CAN buses. However, wiring diagrams show 10 different CAN bus connections, so it must in some cases either act as both ends of a bus, or operate in the middle of a bus with connections in and out.

Connections

The CAN Gateway has a single 24-pin connector (M101) of type TH24FW-NH.

File:ZE1 M101 Connector.png

Terminal No.	Color of Wire	Signal Name
1	L	VEHICLE CAN COMMUNICATION CIRCUIT-H
2	BR	ADAS CAN COMMUNICATION-H
3	W	BATTERY
4	SB	IT CAN COMMUNICATION CIRCUIT-H (EXCEPT FOR MEXICO)
5	B	GROUND
6	GR	CHASSIS CAN COMMUNICATION CIRCUIT-H
7	BR	ITS CAN COMMUNICATION CIRCUIT 2-H
8	L	DIAGNOSTIC CAN COMMUNICATION CIRCUIT-H
9	GR	CHASSIS CAN COMMUNICATION CIRCUIT-H
10	BR	ADAS CAN COMMUNICATION-H
11	L	DIAGNOSTIC CAN COMMUNICATION CIRCUIT-H
12	L	–
13	P	VEHICLE CAN COMMUNICATION CIRCUIT-L
14	W	ADAS CAN COMMUNICATION-L
15	G	IGNITION
16	V	IT CAN COMMUNICATION CIRCUIT-L (EXCEPT FOR MEXICO)
17	B	GROUND
18	G	CHASSIS CAN COMMUNICATION CIRCUIT-L
19	R	ITS CAN COMMUNICATION CIRCUIT 2-L
20	W	DIAGNOSTIC CAN COMMUNICATION CIRCUIT-L
21	G	CHASSIS CAN COMMUNICATION CIRCUIT-L
22	W	ADAS CAN COMMUNICATION-L
23	W	DIAGNOSTIC CAN COMMUNICATION CIRCUIT-L
24	G	–

Buses connected

Bus	Pins (H,L)	Comments
VEHICLE CAN	1,13	VCM, IPDM, Air bag diagnosis, combination meter, keyless entry, TPMS, VSP, BCM
ADAS CAN	2,14 and 10,22
IT-CAN	4,16	AV control unit, TCU, CAN terminator
CHASSIS CAN	6,18 and 9,21	Steering angle sensor, EPS control unit, chassis control module, parking brake, brakes, ABS
ITS-CAN	7,19	Around View Monitor Control Unit, Side Radars, CAN terminator (ITS)
DIAGNOSTIC CAN	8,20 and 11,23	OBDII port
EV-CAN	12,24	VCM, Inverter, PDM, A/C, LBC

External Links

• https://blog.jingo.uk/notes-on-integrating-a-nissan-leaf-ze1-and-home-assistant/