BMW F30 Gateway connection guide » History » Revision 2
Revision 1 (Adam Klama, 12/03/2024 01:36 PM) → Revision 2/10 (Adam Klama, 12/03/2024 01:42 PM)
# BMW F30 Gateway connection guide
Here is the guide for connecting the PT\_CAN, PT\_CAN2, power, fan control, and accelerator pedal signals to the Gateway device and ECU.
The main connections needed for this modifications are: **A46\*1B**, **X13\*1B**, and **Z8\*3B** connectors.
This guide is based on N20/N26 engine and DME. Connections for B46/B48 and B58 may be different.
### PT\_CAN to Gateway Device:
- **PT\_CAN\_H**:
- **Pin 28 on A46\*1B (Blue/Red wire)** should be connected to **CAN1H (Pin 10 on your Gateway device)**.
- **PT\_CAN\_L**:
- **Pin 13 on A46\*1B (Red wire)** should be connected to **CAN1L (Pin 23 on your Gateway device)**.
### PT\_CAN2 to Gateway Device:
- **PT\_CAN2H**:
- **Pin 43 on A46\*1B (White/Yellow wire)** should be connected to **CAN2H (Pin 11 on your Gateway device)**.
- **PT\_CAN2L**:
- **Pin 44 on A46\*1B (White/Blue wire)** should be connected to **CAN2L (Pin 24 on your Gateway device)**.
### Power and Ignition Connections to Gateway Device:
- **KL30 (Battery Power Supply)**:
- **Pin 1 on A46\*1B** should be connected to **KL30 IN (Pin 1 on your Gateway device)**.
- **KL15 (Ignition Supply)**:
- **Pin 22 on A46\*1B** should be connected to **KL15IN (Pin 15 on your Gateway device)**.
### Fan Control Connections:
- **Fan Cut-Out Relay**:
- **Pin 4 on A46\*1B** is used for the fan cut-out relay and should be controlled by the **ECU**.
- **Fan PWM Signal**:
- **Pin 18 on A46\*1B** is the fan PWM signal and should also be controlled by the **ECU**.
### Accelerator Pedal Connections:
- The **accelerator pedal** should be connected to the **ECU** or to the **analog inputs on the Gateway device** in case you want to send throttle position over the CAN bus.
- **5V Supply for Accelerator Pedal**:
- **Pins 7 and 24 on A46\*1B** provide the 5V supply for the accelerator pedal.
- **Ground for Accelerator Pedal**:
- **Pins 11 and 27 on A46\*1B** are the ground connections for the accelerator pedal.
- **Signals for Accelerator Pedal**:
- **Pins 16 and 21 on A46\*1B** are used for the two signal outputs from the accelerator pedal.
### X13\*1B Connector Connections:
- **Pin 1 and Pin 11**:
- These pins control the **AC compressor** on the engine. Both components are controlled by the **FEM** (Front Electronic Module), and it is recommended to use the original BMW AC compressor.
- **Pin 9**:
- This pin controls the **starter**. It is capable of driving a **2JZ starter** and is also controlled by the **FEM**.
### Z8\*3B Connector Connection: 
- **KL31 (Ground)**:
- **Pin 3 on Z8\*3B** should be used as **KL31** for the Gateway device.
- **KL15 (Ignition Supply for ECU)**:
- **Pin 1 on Z8\*3B** should be used to control the main relay for the standalone ECU.
### Notes:
- Ensure that all connections are securely made and wires are properly insulated.
- For CAN signals, use twisted pairs to minimize electromagnetic interference, ensuring the integrity of communication between the vehicle and the Gateway device.
- Double-check all connections to prevent any miswiring that could damage components or cause malfunction.