TPS Singal breaks away

[scared101]

- Honda Civic Type R – ep3
- serial number of your K-Pro - 470
- ECU part number 37820-PRA-E11 and 966823-2Y23
- KManager version 3.1.2.0
- mods: injen cold air intake / RBC Manifold / Tegwia 4-2-1 RaceHeader/ Supersprint CatBack
- when and where you got the K-Pro – bought it second hand from the UK
- ground is on cylinder head


Hello,

i got a problem with my TPS Signal. See screenshot. When i keep the throttle control in a center position, after a few seconds or sometimes after 2-3 minutes, the signal breaks away.
I already replaced the TPS Sensor against a k-tuned and another sensor. I also tryed to put a new cable directly from the ECU to the TPS Sensor. Still the same problem.
When i measure directly at the tps sensor the voltage on Red/Black or Yellow/Blue it won´t break away. I only see it in the kmanager.

The main problem on that is, when i drive the car for 2 laps on the racetrack (Nuerburgring Nordschleife) after 1 ½ i dont get any TPS Singal anymore. Somehow this might has something to do with heat.
I tryed to re-create the problem by heating up the tps sensor and cables, but it didn´t worked out.

First of all i like to know why the tps signal breaks away even when the engine and everything else is cold.
Can the kpro somehow be damaged?

Also the kpro seems a little bit bend. See picture.

Thanks in advance!

[Spunkster]

You should loosen the screw that is pushing the board down so that the board is level. This will not cause a TPS issue you are describing.

What you are describing is intermittent, and sounds like either a TPS sensor issue, or a wiring fault. Have you tried your ECU in a known working vehicle?

[scared101]

I already loosed the screw, its getting a bit better but still a bit bend.

Yes it seems like a wiring or tps issue. Strange thing is when i put a oszi on the tps cables i don´t see the signal break away.

I will try to put the ecu in another car.

Can there be any other cable cause the failure? I only checked the 3 cables going to the tps sensor.

[Spunkster]

you should also download the most recent beta version of software and see if that has any effect as the software you are using is at leas a year or more old.

[scared101]

I tryed it with 3.2.4.0 Same problem.
I will try to find someone with a ep3 so i can switch it into another car.

[scared101]

I openend the ECU and had a look at the backside. Is this kind of wiring normal?

[Spunkster]

Someone has installed the K-Pro themselves and not done a very good job. I would contact CPL Racing in the UK and have them take a look at this.

[scared101]

So finally i tested it in a working car. Same Problem. I will send it to cpl racing i guess.