IOCAN

# 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: [[BMW F30 A46*1B pinout|**A46\*1B**]], [[BMW F30 X13*1B pinout|**X13\*1B**]], and [[BMW F30 Z8*3B pinout|**Z8\*3B**]] connectors.

This guide is based on N20/N26 engine and DME. Connections for B46/B48 and B58 may be different.

Before you start, please familiarize yourself with:

* [[CAN Gateway Pinout]]

* [[BMW F30 A46*1B pinout]]

* [[BMW F30 X13*1B pinout]]

* [[BMW F30 Z8*3B pinout]]

### 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.