Wiring Question Main and Fuelpump relais

[lemmy01]

Acording the hondata wiring diagram the E1(FPR) and E7(MainRelay) both switch the ground side of the coil.
Yet i have found a Honda Pinout for the E Plug and this reads to me that E1 swicht GND and E7 +12V to the coil.

See picture

pra_E plug.jpeg

E7 Signal Descripion:
With ignition switch ON:battery voltage
With ignition switch off: 0V

Whats right??

[Hondata]

The manual is wrong. Both E1 and E7 switch to ground. 12V will burn out the part of the ECU which controls the relay.

Here's the corresponding page from the US EP3 manual

e-7.png

[lemmy01]

So maybe the outputs on my ecu are burned.
I tried it but the mainRelay did not switch.
So i rewired the relais do ignition and let the E1 and E7 unused.
The software than shows Ignition on and i clould upload the eu-civic-pra cal with immobilizer disabled.
But al sensor data i see is not right 5340rpm as example without engine running.
I tried to start but seems like the ecu do nothing no fuel at leased.

Any suggestions what's wrong here?

k20A2 engine withe PRA ecu.Latest stable software.Engine loom is stock civic type R i onnly need to wire the c101 and the ecu e-plug

Thanks
Ralf

[Spunkster]

What is the serial number on the K-Pro board inside the ECU?

From Help, About, what is the version of software you are using?

[lemmy01]

Software 4.2.5.0

Serial over 4000 dont have ecu here and no internet in garage.Must note per hand next time im threre if nessesary

Get most solved.After erasing ecu and download a fresh cal the sensordata is there and the engine starts. :-)

Measured the e1 and e7 against ground when running and there Is nothing!!

KPRO is in a race car so switch the fuelpump on by button is no problem.

Final question is it a problem to switch the mainRelay with ignition and not per ecu-output ? So i could race the car until new ecu is here.

Thanks
Ralf

[Spunkster]

Using a damaged ECU on a race car could be more dangerous as if there is an accident the fuel pump will not shut off when the engine dies and instead will continue to pump fuel which could be a major hazard.

[lemmy01]

What about nitrous output? Could use that for fuelpump and prime the pump with a button and second relasis?
Only need a solution for a few weeks.

[Spunkster]

I would advise against that.

[lemmy01]

I would advise against that.

Any other recommendation where or how i could get a engine runnig signal?
GND or +12V
For me it seems like that the nitrous output could be configured to only have grounded when engine running.

The new ecu is ordered but need a solution in the mean time.

[k24_chris]

I'm having the same issue can someone help me asap. Can I send my ecu back to get checked out for repairs

[k24_chris]

This is the day I posted this: Tue Dec 13, 2016 1:06 pm

hey I'm having the same problem with my kpro 4. I purchased it oct 31 2016 from phearable.net
ecu# 37820-pnf-a12
kpro 4# 44406
software#4.3.2.0
I cant upload my map. (upload failed)
I cant erase ecu (security failed)