DQ250 Electrical Information

 

We will use MaxxECU as the way to communicate with the stock TCU in the transmission.  A lot of information will be found on MaxxECU's guide.

MaxxECU will act an an emulator for the stock vehicle the DSG came from.  The DSG requires many basic functions that the stock vehicle will provide, but since the DSG is no longer in the stock vehicle, MaxxECU will emulate these functions.  You can use a MaxxECU Race/Pro to run a 2GRFE and DSG together or a MaxxECU Mini to combine with a different aftermarket ECU (addon/piggy back function).

It will be highly recommended to use only a MaxxECU to run both, however we have been able to prove that you can run a Link or Haltech with a MaxxECU Mini to get everything to work as long as the MaxxECU Mini gets the pedal, throttle position, rpm, etc.

For MaxxECU to work we will need to have the following connected to it:

  1. Transmission
  2. Wheel Speed
  3. Shifter
  4. Paddles (optional)

Lets talk about each one and what the wiring would look like to complete this.

1. Transmission

The transmission will need to be connected via power (pin 11 and 18), ground (pin16 and 19), ign on (pin 13), can high (pin 10) and can low (pin 15).  The wiring into the connect should be sealed.  Recommended reusing the stock connector since it is properly sealed.  Water intrusion into the connector will damage the mechatronics.

 

2. Wheel Speed

You will need wheel speed for the DSG to function properly.  You can drive it with NO wheel speed, but it will be in limp mode.  You will need to have MaxxECU connected with at least 1 wheel speed sensor, however 3 or 4 is recommended.  You will have 1 extra DIGITAL IN on a MaxxECU Race version to do this (either DIN1, 2, 4 or 5) (Note DIN3 is not compatible on a Race version with VSS).

Other ways to get this is an ABS unit that supplies a VSS such as the MR2 Spyder or the MK60/MK60e5.  Either way, the VSS shall be sent to the MaxxECU.

As far as the speedometer, it will be application specific.  A  pulse output with a pull up resistor may do the trick on the electric speedometers.  Toyota uses something close to the 2385 pulse/km.  There is no chance for the DSG to work with a factory cable driven speedometer without the use of a cable driven converter box such as Dakota Digital ECD-200BT.  The DSG does not provide any output signal.  It comes from the ECU. Aftermarket clusters will work also.

3. Shifter

The shifter can be done many different ways.  Some examples are:

a) BMW F80 shifter (canbus)

b) Blink Marine push buttons (canbus)

c) "DCT" Shifter (Digital or Analog)

d) Literally any other way to provide an input to MaxxECU (endless possibilities here).

The F80 shifter will provide the most normal driving experience. It provides proper HMI (human machine interface).  Push Buttons (blink marine) wont have the same HMI feel but will work to accomplish the task.  The DCT shifter does not have a "drive" or "reverse mode" since its only setup to do upshift or downshift.  You can use a separate button setup for this if wanted or program MaxxECU to shift into drive or reverse based upon a long hold of an upshift or downshift (push forward for 1 second, shifts into drive, pull back for 2 seconds, shifts into reverse, push forward for a shorter duration and it will upshift, etc).

 4. Paddles

A lot of people will opt for the paddles since its the most iconic setup with the DSG.   You can use a factory steering wheel setup and wire in the paddles to the maxxecu via digital or analog.  You can also use an aftermarket paddle setup with something like Seems Legit Garage paddles.

 

You may need to use a curly cord to connect these paddles to the Maxxecu unless you have a way of bringing the wiring through the steering column.  There is also some RF/Wireless boxes that allow a wireless paddle setup such as Cartek's wireless setup, but these are not cheap solutions.

 Most likely you would have ran out of digital inputs on the MaxxECU if you wired in the VSS.  You can use a single analog input to control both paddles.  MaxxECU will call this a switch decoder, however the basic idea is to give each paddle scenario its own unique resistance (then Maxx will read voltage).

Paddle 1 Pressed
Paddle 2 Pressed
No Paddles Pressed
Both Paddles Pressed

You can do this with wiring it in this manner, except only 2 switches

 

 

 

 HTG is no longer an option at this time.