Speedometer and RPM does not work

[S2_avant 19930325]

Hi Guys
They dont work after installing MAXXecu , how do i keep the speedometer and rpm functional with standalone ECU ?

Best Regards

[Wrath]

Have you set it Up correctly in the software? Pnp?

[S2_avant 19930325]

Its not plug and play ,, its only MAXXECU. How does it work , the speedometer and rpm ? What does it read from original ?

[Error404]

VSS you set up as a low side DIN input.
Tacho is driven from a GPO

[S2_avant 19930325]

Update ,, the speedometer works on the dashboard on the car , but not the RPM . There is a sensor mounted on the flywheel so i guess that there is where the RP comes to the RPM gauge on the dashboard ? Correct ? Or where doea the RPM come from on the dashboard ?
Best Regards

[S2_avant 19930325]

The tachometer on the dashboard reads from what ?

[Error404]

It is supplied the signal from the ECU. On MaxxECU this is normally GPO8 which is capable of 12v PWM - with S2 this is simple 12v pulse with 50% duty cycle

[Wrath]

It is supplied the signal from the ECU. On MaxxECU this is normally GPO8 which is capable of 12v PWM - with S2 this is simple 12v pulse with 50% duty cycle

I have problem aswell, don’t remember if i had it before my Maxxecu. But my rpm needle is erratic and sluggish. I watched the output data and the tachoaoutput flickers from 0 to 100%. Is that normal Alex?

the values are correct so where to look? Bad cables in the car or bad leads/components in the actual tachometer?

cheers

[Error404]

I would first check the long contact pins in the instrument cluster - you know the ones which connect to the circuit board? They can get a little oxidised and cause problems with instruments and Autocheck

[Wrath]

Allright, the green contact is for the tacho and pin 12 is for the rpm signal from what ive read. Have sprayed every socket i can find on the harness with oxidcleaner and cleaner plus air to have all cleaned. No luck ?

Have checked all the splices in connection bay area around passenger kickpanel with no luck. Maybe i have missed something. Everything else works fine. The only thing i have found is two kinks on the engine harness (rpm g22? Splice) the black cable has two vite marks in it so you can see the wiring.

you don’t do a engine harness for my var Alex ?

[S2_avant 19930325]

I should be able to just connect GPO8 to to the speedometer .. correct ?
But on what PIN on the speedometer ?
Where can i find the schmatics for the speedometer ?

[newsh]

I should be able to just connect GPO8 to to the speedometer .. correct ?
But on what PIN on the speedometer ?
Where can i find the schmatics for the speedometer ?

All on S2Central

http://www.s2central.com

http://www.s2central.com/S2_Schematics/B/B73-07.pdf

[S2_avant 19930325]

How can i find what PIN on the connector is the RPM signal , the connector that goes on the dashboard ? And what color ,, i think it is sw/bl correct ?

[S2_avant 19930325]

And i should take the GPO8 from maxxecu and connect on that wire .. correct ? The yellow connector ?

[S2_avant 19930325]

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The tachometer , what cable/color ? Dont want to connect GPO8 to wrong one ?


dash.jpg