Only one box translates computer USB into vehicle CAN: the Peak (or TOSUN) interface. Every other cable just changes the shape of the plug. 中文：只有 Peak 在翻译；其它都是换插头。
USB-C only. Speaks USB, not CAN.
Shape only. Buy at MediaMarkt.
USB in. CAN out on D-Sub 9. This is the only smart hop.
D-Sub 9 → OBD-16. Pins 6 / 14 = CAN.
16-pin trapezoid. Door for versions & DTCs.
Three jobs, three doors. Do not mix them.
| Connector 接头长什么样 |
On the truck 车上在哪 |
Our gear 设备：插车的头 / 朝电脑的头 |
To the Mac 怎么接到电脑 |
|---|---|---|---|
|
OBD-II · 16 pin
梯形 16 针 · J1962
ASK
|
Under the dash, driver side. Plastic trapezoid. Pin 6 CAN-H, pin 14 CAN-L, also 100TX DoIP. All 16 pins, below |
Vehicle: OBD male on IPEK-003004. Out: D-Sub 9 into Peak. |
Mac USB-C → C-to-A → Peak USB-A → D-Sub → this cable → OBD. Then UDS 18DAF141. |
|
36-pin harness tap
踢脚板线束抽头 · 12 路 CAN
LISTEN
|
Left kick panel, in the loom. ~24 CAN pins + power/gnd = 36. Labels TCAN / PCAN / BCAN. | Vehicle: flying leads on TCAN5 H/L into Peak CAN1. Out: Peak USB-A. |
Same Peak USB into Mac. Listen-only. Cockpit bus, not UDS. |
|
CDCU USB Type-C
盒子左起第 2 口 · TE 2398010
ADB
|
On the CDCU box, 2nd from left. Factory cable goes to dash USB panel 3725220. | Vehicle: USB-C on the box. Out: USB-C or USB-A on a data cable (not FTDI serial). |
Mac USB-C → data cable → CDCU. adb devices. Not CAN. Not Peak. |
|
CDCU UART (inside)
散热片缝 · 白排针 · MCU / MPU
UART
|
Not on the 1–10 plug row. Open the aluminium lid / look into the fin window. Yaxon USB-TTL harness. | Vehicle: white header in heatsink. Out: USB-TTL (MCU or MPU, one at a time). |
Mac screen -L … 115200. Reset / WDT. Not OBD, not Type-C. Pinout still from Yaxon. RX only. |
|
CDCU J1 power 32P
最右大黑壳 · TE 2327446-2
POWER
|
Rightmost on the CDCU connector row. 24V + CAN + speakers + wake. | Vehicle harness only. Not a laptop port. | Do not plug a computer here. Last to connect, first to cut power. CPA lock. |
|
Dash USB 3725220
仪表台前排 USB-A 双口
PHONE
|
Small black dual USB-A in the dash. Occupant charge / stick. | Do not use as a diagnostic dongle. | Laptop here will not see CDCU adb. CDCU is host. |
|
Peak D-Sub 9
Peak 盒子侧面 CAN 口
|
Not on the truck. On the Peak box. | Vehicle side of Peak: D-Sub 9 (CiA 106). Computer side of Peak: USB-A. |
Needs USB-C→A into the Mac. Mac has no USB-A. |
This is the 16-pin socket in the row above. Face it in the truck, wide edge up. Top row, left to right, is 1–8. The bottom row sits half a step to the right: 9–16. Socket PP1506002-THB. Dot colours are the function. A jacket colour is shown only when the harness table names it. The 36-pin tap is a different plug; this drawing is not its cavity map.
这是上面那只 16 针诊断口。对着车上母座看，宽边在上。上排从左到右 1 到 8，下排往右错半格，是 9 到 16。36 针抽头是另一只插头，这张图不是它的孔位。
| Pin | What | Wire | Jacket |
|---|---|---|---|
| 1 | Not in the checked table · 表里没写 | ||
| 2 | Not in the checked table · 表里没写 | ||
| 3 | Ethernet receive + · 以太网收 + | TRP | Yellow · 黄 |
| 4 | Ground · 地 | Z13g | Brown · 棕 |
| 5 | Ground · 地 | Z13h | Brown · 棕 |
| 6 | Diagnostic CAN high · 诊断 CAN 高. Drawing name GWCANFD9. Not the powertrain bus. | TH09 | |
| 7 | Empty cavity · 空脚 | ||
| 8 | Spec name: Ethernet activation. No wire on the WH12 table. Measure on the truck. · 激活线，表上无导线，上车先量 | ||
| 9 | Empty cavity · 空脚 | ||
| 10 | Empty cavity · 空脚 | ||
| 11 | Ethernet receive − · 以太网收 −. One pair with pin 3. | TRN | Green · 绿 |
| 12 | Ethernet transmit + · 以太网发 +. One pair with pin 13. The truck transmits here. | TTP | |
| 13 | Ethernet transmit − · 以太网发 − | TTN | |
| 14 | Diagnostic CAN low · 诊断 CAN 低. Same GWCANFD9 segment as pin 6. | TL09 | |
| 15 | Named as an extra communication line. No wire. · 附加通信，无导线 | ||
| 16 | Permanent power · 常电 | P304 |
3 和 11 一对，车在这里收。12 和 13 一对，车在这里发。针 6、14 只是诊断 CAN。针 8 规范里叫激活线，表上是空脚，上车先量。针 1、2 表里没写。针 15 没有导线。
Versions, DTCs, F010. Use 16-pin OBD + Peak + IPEK-003004. Classic CAN 500 k, 18DAF141.
Raw frames on CANFD5. Use the 36-pin tap, TCAN5 only. Listen-only. Peak cannot be an extra talker.
CDCU Type-C with a USB data cable, not an FTDI serial cable. adb. Watchdog reset reason is the internal UART, not this port.
Open the box: heatsink window, USB-TTL, 115200. Mac works. See plug matrix · DBG.
J1 32P only. Vehicle off. Screens stay. Not a computer port.
CDCU 3D CDCU UART (inside) Get to the CDCU Dash USB 3725220 3D viewer Service hub