LED flash on injector cuts?

[blazarov]

Hello,

I have RLTC with the digital adjuster and i really really want to get a light notification each time when TC kicks in. It seems pretty logical and useful and much better than the LED flashing with the RPMs.

Having this with the LED installed in the dash will get really nice stockish feeling. Is this possible?

I know that there is a graph function on the digital adjuster displaying injector cuts, but it's not what i need. I just want everytime when the TC does injector cut to have a LED flashing.

Thanks in advance! Best Regards!

[Jonnie]

Hello,

I have RLTC with the digital adjuster and i really really want to get a light notification each time when TC kicks in. It seems pretty logical and useful and much better than the LED flashing with the RPMs.

Having this with the LED installed in the dash will get really nice stockish feeling. Is this possible?

I know that there is a graph function on the digital adjuster displaying injector cuts, but it's not what i need. I just want everytime when the TC does injector cut to have a LED flashing.

Thanks in advance! Best Regards!

Hi Blazarov,

I'll explain how to get the LED to flash during fuel cuts, however did you know you're able to configure the LED as a shift light? Would this be of better use to you? :Drive:

If you refer to page 28 of the Traction Control Manual, you should see the connector wiring diagram. Under connector 'B' (Diagnostic cable) Pin 4 will give a constant 5V signal which goes to ground when the injectors are cut. Pins 12 and 13 should give a signal up to 5V, depending on which cut sequence the Traction Control is using when slip occurs. Therefore, you could try wiring the LED to one of these pins. :thumbsup:

If you want to know about the shift light mod, let me know :D

Regards,

Jonnie

[blazarov]

Thank you very very much!

The car runs vipec V88 standalone so shiftlight is already implemented in the stock dash :)

Thanks to your info traction control will also be implemented in a really stylish and descrete manner.

Thank you again. This case is closed for me, but would be helpful for others if you share the info on the shift light feature.

[Jonnie]

Thank you very very much!

The car runs vipec V88 standalone so shiftlight is already implemented in the stock dash :)

Thanks to your info traction control will also be implemented in a really stylish and descrete manner.

Thank you again. This case is closed for me, but would be helpful for others if you share the info on the shift light feature.

Sounds good! Have you integrated the digi adjuster in to the dash or something? I'd love to see a picture when it's finished :D

Out of interest what vehicle do you have it installed in?

I'll start a new thread about configuring the diagnostic LED as a shift light. :thumbsup:

Regards,

Jonnie

[blazarov]

The car is BMW E36 M3 3.2 Turbo. Euro version.

I did what you told but it seems that i am getting constant ground on PIN4 of connector B. The car drives fine, digital adjuster is showing no cuts, but the pin is grounded.

I've connected it to a light bulb on the dash, and the other end of the light bulb to a switched +12. And the light is always on. later i can test with a multimeter.

Because the spare pins for the bypass plugs did not fit to the connector B i used the pins for the diagnostic LED - just moved pin 3 to pin 4 and routed it to the light bulb Pin 2 remained free. Can the missing diagnostic LED be the problem that i am seeing constant ground on pin4?

[Jonnie]

The car is BMW E36 M3 3.2 Turbo. Euro version.

I did what you told but it seems that i am getting constant ground on PIN4 of connector B. The car drives fine, digital adjuster is showing no cuts, but the pin is grounded.

I've connected it to a light bulb on the dash, and the other end of the light bulb to a switched +12. And the light is always on. later i can test with a multimeter.

Because the spare pins for the bypass plugs did not fit to the connector B i used the pins for the diagnostic LED - just moved pin 3 to pin 4 and routed it to the light bulb Pin 2 remained free. Can the missing diagnostic LED be the problem that i am seeing constant ground on pin4?

It may be worth using the 'Try Engine Cuts' function on the digital adjuster to test your LED. (Page 14 of the Digital Adjuster Manual) This way you can test it in situ. I'm not too sure why you're seeing constant ground, I could have been mistaken. It may be that its grounded and goes to 5v when the TC starts cutting the fuel. This is something that may be worth checking.

Regards,

Jonnie

[blazarov]

I have used the wrong PIN number - counted them backwards. So now i switched it to the correct pin number 4 and now it's the opposite. The light never comes on. I've tried with try engine cuts and the engine is obviously cutting, but the light does not come on. Strange..

[Jonnie]

I have used the wrong PIN number - counted them backwards. So now i switched it to the correct pin number 4 and now it's the opposite. The light never comes on. I've tried with try engine cuts and the engine is obviously cutting, but the light does not come on. Strange..

Hi Blazarov,

I would defiantly recommend checking the pins with a multi-meter to see what's going on.

You could try connecting the LED between a 5v output line and pin4 just in case the voltage is going from one value to another. This could explain why the LED was always lit up before.

Regards,

John.

[flynace]

Pins 12 and 13 should give a signal up to 5V, depending on which cut sequence the Traction Control is using when slip occurs.

Hi Jonnie,
Does this mean that pins 12 & 13 give an analog voltage between 0v and 5v proportional (%) to the amount of cut the unit is applying?

And can you confirm which pin can act like a digitial switch indicating if cut is being applied or not?
Is it going high to 5v or going to ground?

Thanks,
Derek

[blazarov]

Hi,

After all i did not succeed to get this working as i wanted. But i did not have time to mess with it a lot, because the turbo died the same day and now the car is still disassembled.

[flynace]

Hi blazarov,
Like you, I would like to have an LED indicator in the cockpit to know when fuel is being cut.
I would also like to be able to log % of traction control if possible.

Will RL detail what Connector B Pins 4, 12 & 13 (CONT1, CONT2 & CONT3) actually do and how to read them?

Thanks

[Jonnie]

Hi Flynace & blazarov,

Sorry for the delay.

PIN 4 - Should be a constant 5V which goes to ground when the injectors are cut.

PIN 12&13 - Give a signal upto 5V depending on which cut sequence the traction control system is using at the time of slip.

If you're interested you can also configure the LED as a shift light....:Drive:

-Connect the TC ECU to your computer via serial cable (Serial to USB adapter may be required)
-Load terminal in the TC software program.
-Read Settings to bring up the terminal menu.
-Press 'G'.
-Press 'C' to configure the RPM at which the LED is illuminated. For a 7000 RPM shift light, type '07000'.
-Exit terminal.
-On the main screen, click ‘write settings’.

If you have any questions, please let me know. Or alternatively, email support@racelogic.co.uk. :thumbsup:

Regards,
Jonnie.

[flynace]

PIN 4 - Should be a constant 5V which goes to ground when the injectors are cut.

PIN 12&13 - Give a signal upto 5V depending on which cut sequence the traction control system is using at the time of slip.

Hi Jonnie,
Thanks for the feedback and info on the shift light.

Regarding pins 12 & 13, how are they interpreted?
Are they analog outputs ranging from 0 to 5v proportional to sequence?
Pin 12 @ 1v = Sequence 1
Pin 12 @ 2v = Sequence 2
etc...

Or are they digital?
Pin 12 0v / Pin 13 0v = Sequence 1
Pin 12 5v / Pin 13 0v = Sequence 2
Pin 12 0v / Pin 13 5v = Sequence 3
Pin 12 5v / Pin 13 5v = Integral Mode Active

Cheers

[Jonnie]

Hi Jonnie,
Thanks for the feedback and info on the shift light.

Regarding pins 12 & 13, how are they interpreted?
Are they analog outputs ranging from 0 to 5v proportional to sequence?
Pin 12 @ 1v = Sequence 1
Pin 12 @ 2v = Sequence 2
etc...

Or are they digital?
Pin 12 0v / Pin 13 0v = Sequence 1
Pin 12 5v / Pin 13 0v = Sequence 2
Pin 12 0v / Pin 13 5v = Sequence 3
Pin 12 5v / Pin 13 5v = Integral Mode Active

Cheers

Hi Flynace,

We just tested this on the bench and it looks like it behaves in a digital way. The following is confirmed by our Sales Manager....

Pin 13 (CONT 2): 0 cut = 5v, 1 & 2 cut = GND, 3 & integral cut = 5v
Pin 12 (CONT 3): 0 cut = 5v, 1 cut = GND, 2 cut = 5v, 3 cut = GND, integral = 5v

However, the TC ECU will only behave in this manner on CONT 2 and 3 if you tick 'Non Sequential Mode' and set all the cut tables to 0. In non-sequential mode, the TC ECU will apply pre-set cut sequences depending on the amount of slip detected. This means the user configurable cut tables in the software aren't used which may not be ideal for your application.

I hope this information helps. If you have any further questions, please let us know. :thumbsup:

Regards,
Jonnie.

[flynace]

Hi Jonnie,
Makes sense and thanks for the clarification.
Non-Sequential mode won't work for my application.

Can you just confrim that Pin 4 (CONT 1) still works in Sequential mode?

Cheers


Hi Flynace,

We just tested this on the bench and it looks like it behaves in a digital way. The following is confirmed by our Sales Manager....

Pin 13 (CONT 2): 0 cut = 5v, 1 & 2 cut = GND, 3 & integral cut = 5v
Pin 12 (CONT 3): 0 cut = 5v, 1 cut = GND, 2 cut = 5v, 3 cut = GND, integral = 5v

However, the TC ECU will only behave in this manner on CONT 2 and 3 if you tick 'Non Sequential Mode' and set all the cut tables to 0. In non-sequential mode, the TC ECU will apply pre-set cut sequences depending on the amount of slip detected. This means the user configurable cut tables in the software aren't used which may not be ideal for your application.

I hope this information helps. If you have any further questions, please let us know. :thumbsup:

Regards,
Jonnie.

[Jonnie]

Hi Jonnie,
Makes sense and thanks for the clarification.
Non-Sequential mode won't work for my application.

Can you just confrim that Pin 4 (CONT 1) still works in Sequential mode?

Cheers

Hi Flynace,

When I was conducting this testing, I actually had an LED tapped in to Pin4 and the signal did go to ground when cuts were applied in both sequential and non-sequential modes.

Note, at low RPM (700-1000) the LED will flash due to the rate at which the injectors are firing rather than fuel cuts.

If you have any further questions, please let me know. :thumbsup:

Regards,
Jonnie.

[p fandango]

so only pin 4 will work & will flash at low rpm anyway? can i ground a 12v led to this

sorry for the silly questions i'm not very good with computer signals/electrics

[Jonnie]

Hi all,

I have a little update for you. When I originally tested the LED on Pin4 to visually see when the TC ECU is applying cuts, I used a GND available on PIN10 of connector B. This actually made the LED flash at a low RPM as well as when the ECU applied cuts.

I've just tried the LED on Pin4 again but this time I used a separate ground. The LED didn't flash at low RPM and stayed 'solid' until the ECU applied cuts where it started to flash. Therefore, I would definitely use a separate ground for the LED if you decided to perform this modification.

If you have any further questions, please let me know. :thumbsup:


P fandango - can i ground a 12v led to this
If you were to do this, I think the 12V LED would change from dim to on rather than on / off.


Regards,
Jonnie.

[p fandango]

If you were to do this, I think the 12V LED would change from dim to on rather than on / off.
ah thank you Jonnie so 5volt LED it is then, how would i go about getting a spare plug so i don't have to mess with the original lead

many thanks Duane

[Jonnie]

ah thank you Jonnie so 5volt LED it is then, how would i go about getting a spare plug so i don't have to mess with the original lead

many thanks Duane

Hi Duane,

If you require any additional components for your Racelogic Traction Control system, please contact vbox@racelogic.co.uk

How's the 850T5 coming along? I'm waiting for some video footage! :thumbsup:

Regards,
Jonnie

[p fandango]

Hi Duane,

If you require any additional components for your Racelogic Traction Control system, please contact vbox@racelogic.co.uk

How's the 850T5 coming along? I'm waiting for some video footage! :thumbsup:

Regards,
Jonnie
Hi Jonnie,

email sent for spares, thank you sir. The T-5's getting there, still got coolant & brake lines to do. All i've got left to do on the traction control is cut into the injectors, but i'm having misfire issues (injectors too big) so want to get the engine running properly first

hopefully won't be too ling before she's back

many thanks Duane