Trouble with Launch Control

[Ringo]

I connected launch control as said in PhatBob manual. After activating launch control from Megatune launch control is on all the time. I added led to wiring as on diagram and problem was solved and launch control works as it should. PS! Led is lit all the time.


What maybe reason why launch control wont work as it should? How to get rid of the led so that launch control will work?

[emil@vems.se]

how old is your ECU?
On all newer ECU's since a few years ago come with pullup integrated inside the box, listed on the papers supplied with the box.
If the LED in that schematic is always on, it seems that your button is always grounding, or that you actually hooked up the launch control to a pin in the ECU that isn't a analog input.
If you don't have any papers, please supply the serial number of your ecu here
//Emil

[Ringo]

ECU nr is 1446.
 Everything is OK with button because when i use another ecu then everything works fine as it should.

[emil@vems.se]

did you order your ecu with 1-wire option ? if so, pin 16 is used for this.

[Ringo]

Yes, it maybe ordered with one wire option. Inside ecu map and Auditrigger. It seems thaht only analog input left is EC18-6 ch6.

[Ringo]

I tried ch 6 and 7 also, still same problem.

[gunni]

Can you measure with a DVM that you are actually changing the voltage on those pins?

[mattias]

Use the raw analog input voltage gauge group, find it in menu "view -> group".
Connect the TPS signal to each input you want to test, or some other safe voltage.

Pin-out for v3.3 : http://www.vems.co.uk/VEMSUserManual/ECConnectorsOut.png
Pin-out for v3.6 : http://www.vems.co.uk/VEMSUserManual/ECConnectorsOut3.6.png