Hello guys,
Sorry to pull an old post up but I did want to shed some light on the issues we were having in trying to calibrate the TPS on the G4X this customer had. He is still currently running on a Plus model and we would like to get him on the X that was paid for but we are still having troubles getting the TPS to cal as it continues to give us an H-Bridge polarity error. We have checked and eliminated every variable in the wiring and tried this on multiple running cars using the Panic Wire IS300 adapters that were once available.
The 20+ ECU's we have in-stock are functional until it comes to calibrating the TPS for Ethrottle setup, including obviously the ECU we received from this customer. The G4+ versions have no issues calibrating and running, that is why we sent him one of our employees ECU's to get him on the road.
Here's the timeline: We switched over to the X platform at the beginning on 2020 and sold 10-15 of these IS300 kits with great results to customers. Then the pandemic hit and the Link production line stopped for 8 weeks (I believe?). We ran out of ECU's within that time and ordered more right when they were available sometime in late April/early May. Once they arrived we sent out the last Panic Wire kit we were to sell (we no longer carry Panic Wire products) to this family. We were contacted about a TPS calibration issue after they tried setting up the ECU following our instruction video sent with the kit. We went through those procedures with them, went through potential wiring issues and tried generally everything we could think of. After confirming the wiring was sound based on the engine running on the harness with stock ECU we had the customer send the jumper harness and ECU back for inspection.
Upon arrival we ran through our tests and found that there was nothing wrong with the jumper (worked on other cars here with different ECU's from running cars) and assumed an issue with the ECU or programming. After running through 4 known working maps with the same results we contacted Link through multiple avenues and began to chase the possible causes. We were told repeatedly that it was a wiring issue or that our maps had issues, but no issues could be found. We then sent an ECU back to Link in Michigan where Scott ran tests claiming there was no fault with the ECU and that we had our Ethrottle AUX's set wrong, which they were not and I could not get a clear answer beyond that as to what I should set them to or what was actually incorrect. Both him and Jason claimed knowledge of good running cars in several regions and left us with it being a wiring fault. We requested the our local representative stop by to help us diagnose this issue and that unfortunately has not happened.
We have since done more testing on new harnesses, old harnesses, with and without jumper harnesses and come to the same H-Bridge error. It seems that there was some change in either hardware or software during the Pandemic shut down as that is the only major timeline factor that did not involve us. Speaking with Simon on the Link Chat and he said there was possibly a firmware change that may be responsible for this issue. The trouble call was then deferred to Scott in the USA. We are hoping to find a flaw in our setup or something we are doing wrong and are not trying to say the product is issue prone, we would just like to get this issue understood so we can move on and help our customers.
