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.
| 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 | – |
Accessing CAN buses
| Pins | Bus | Comments |
|---|---|---|
| 10+2, 22+14 | 10 and 2 are joined at M09, 22 and 14 are joined
ADAS | |
| 6, 18 at one end, 9,21 at the other | Steering angle sensor, EPS control unit, chassis control module, parking brake, brakes, ABS | |
| 4,16 | IT-CAN | AV control unit, TCU, CAN terminator |
| 1,13 | VCM, IPDM, Air bag diagnosis, combination meter, keyless entry, TPMS, VSP, BCM | |
| 12,24 | EV-CAN | VCM, Inverter, PDM, A/C, LBC |
| 7,19 | ITS-CAN | Around View Monitor Control Unit, Side Radars, CAN terminator (ITS) |