koltec TPS signal.

[cooter1]

Hi. My first post on this forum.

I'm having trouble with a duel fuel combo.
It's fitted with a koltec system, gsi I believe.
The error codes I am getting are 12 and 22
I have researched this problem and I think that code 12 is to be ignored and code 22 relates to the throttle position sensor.
I plug in with my eobd scan tool and the live data suggests that the tps is working correctly.
No engine light or fault codes stored relating to the petrol ecm/ecu.

I have had a good look round the wiring, connections and earth's and all seem fine.
I'm hitting a bit of a wall with this problem.
Does anyone have any suggestions? Does anyone have any wiring diagrams that I could try and use to find out where this tps signal is going amiss.
Any information at all would be greatly appreciated. Thanks .

[cooter1]

Thanks .i dont know what else to try.