Site Tools


Installation DCT E-series

Parts needed

  • Transmission GS7D36SG E-series (1st generation)
  • Any supported shifter
  • CANTCU controller
  • Various connectors


The CANTCU Controller needs to be installed in a dry place e.g. inside the car, or inside the “ECU Box”, if present. For configuration purposes, a USB-B port is present on the top side of the controller. This should be taken into consideration when planning the installation location. Wiring must be done according to the wiring diagrams available for download.

Power Supply

Power input to CANTCU can be connected together with the DCT transmission power input. Recommended fuse size for combined connection is 15A. Grounding can be done anywhere on the car. WUP (WakeUp) of the DCT and shifter needs a +12V source only when ignition is on. This should be controlled by the CANTCU WUP output. It needs to be wired between all units (transmission & shifter) to ensure proper function. Wire sizes can be found in the wiring diagram.

Time Delay Relay

The saving of adaptation values to the E-DCT transmission permanent memory happens after the car has been shut down (WUP signal goes down) and while main power to the transmission still is on. This time period needs to be at minimum around 45-60 seconds. The required power supply logic/behavior usually is present on OEM cars. On standalone ECUs and custom builds a separate Time Delay Relay can be used to hold main power on for a certain time period after engine/ignition shutoff.


CAN1 on the CANTCU Controller is reserved for communication with the DCT transmission and a DCT gear selector (optional). CAN3 is used for car/ECU communication, depending on which integration is used. CAN-bus wiring should be done with twisted-pair cables to minimize interference in the signals. CAN1 has a built-in terminating resistors (120ohm), while CAN3 does not. Depending on installation you may be required to add an terminating resistor on CAN3.

OBD Connector

It is mandatory to include a separate OBD-connector in the wiring (you cannot use car OBD connector). This allows diagnosing the DCT transmission using a suitable BMW DCAN diagnostic cable and BMW Standard Tools. The connector is wired on CAN1.

DriveLogic Modes

To be able to change DriveLogic modes (shift hardness), two buttons (up/down) are needed. If using a E-DCT shifter, the buttons needs to be connected to the shifter (check supported shifters). If using any other shifter, the DriveLogic buttons can be freely connected/defined on any DIN/CAN input.

Shift Paddles

The OEM paddles are connected directly to the transmission. If using an OEM (E-Series M3 DCT) shifter, the paddles need to be wired directly into the transmission (refer to schematics). When using any other shifter, the paddles can alternatively be connected to CANTCU Analog/Digital/CAN inputs.

Inputs and Outputs

For detailed information on Inputs/Outputs and their configurable functions, check the Software-section.

Pinouts and wiring

Connector Pinouts

Wiring Diagram

Paddle Schematic