StupidSubaru

The man, the myth, the legend. Seems like I need to figure out how to read the wiring diagrams better and know which end of the connector they are looking from. I assumed the connector being numbered would have been appropriate, but inverting positions in the connector fixed my issue. I have a good voltage range, and the pedal has a much more smooth transition from 0-100. I had the error come back in the first log attached here after some pretty good fidgeting of the pedal. I shut everything down, keyed back on, re-calibrated and did some more normal throttle oscillations and did not get more errors. I also noticed that the Mazda rx-8 throttle body is nearly identical in design, shape, casting flaws, coolant passages, etc, so I can only assume that the PID for that would be very similar if not correct for the throttle body I am using, so i made those adjustments and did another set of calibrations on both APS and TPS and ran the last log attached. So far no more errors. Being that its almost 2am here I dont think Ill have the chance to fire it up until tomorrow and see if it will drive around the block without too much issue. Today was the first handful of startups on this build. Im sure I will need to make tweaks to the existing tune for cams. But, this was the last hurdle towards being able to scale the next set of hurdles. Thanks again. Log1-AfterRewire.llg Log2-AfterRewire.llg Log3-AfterRewire.llg

Does that mean I should “invert” my wiring? Pull the pins and reinsert in the opposite order?

Here is a caveman drawing for you. Looking into the rear of the connectors and confirmed pin locations with the numbers on the rear. Wire color changes due to it being a pigtail there, so I used pin location. I also checked each pin with key on to see. 3/6~5.05v; 2/5-.015v; 1/4-.036v. I don’t know if that would help you at all, and I do not know how to go about testing the pedal itself.

Sorry about that, heres both. I am using OEM pedal assemblies, Subaru. One is from 06-07 STi and I got one from an NA 09 impreza this afternoon. The latter I could find better documentation and schematics on. That one was also connected while I had control (09). Log 2021-06-18 12;03;56 pm.llg 2021-R7.pclr

I am having issues getting e-throttle working properly. The ecu is a WRX9+, and everything is wired in through an expansion loom. TB is wired correctly and i can get that to calibrate and operate. In setup mode the pedal will control the TB but once turned to "on" i get the 77 error, AP main/sub tracking error.Ive gone as far as getting another (OEM) pedal to verify that the one I have been using isnt bad to start with, and I get the same error with either. I did get the APS to calibrate once with control of the TB while running, but it only lasted for about 5 seconds before giving the error again. I go through the calibration process for both APS and TPS each time I attempt. With the error present I can start the motor and it have it run at about 2500 rpm for as long as i want it to, but no pedal control and no change in RPM aside from a 100-200 rpm fluctuation. What am I missing here? I have another expansion harness handy that is unmolested, should I start over with new wiring, and get the 5v out of the ECU from the chassis side of the harness, as well as sensor ground there? im thinking that would rule out power/ground issues with the expansion loom/my wiring, and potentially the expansion port. Attached is a log of running through the setup process several times and the one instance of it running with pedal control. sorry for the duration. Pedal control comes in around 2:08 for the first few seconds of that run time.

Thanks. I will take a look and see what it says.

I am trying to sort out my plug and play for Subaru, WRX9+ (ver 7 STi). I am looking at expansion harness connections for inputs and dbw, and am seeing two pinouts for that ecu depending on whether it is pre setup for e-throttle or not. Is there any way to decipher this with the serial?

Ok. The chassis did not have DBW originally though. Wouldn’t I need to relay the power to the throttle body on the chassis side somewhere?

Thanks for the response on this. I do have a throttle body here I can try to test with, and will look into pedal compatibility. Looks like I will also be looking into the expansion loom. I can get that local, I’m in Detroit area. I will have to sort out relays and such to get power supplied properly.

New to Link, tuning in general. I currently have a v7 ej207 that I will be getting running again soon, and would like the option for a drive-by-wire throttle body. I’m not sure how I would go about adding it into the existing wiring, etc, or if this is something that could be tied into the CAN lines. Any help on what would be necessary for wiring would be greatly appreciated. If there is info on which throttle body (years, models removed from, etc) would have the best option for support, that too would be very helpful. Thanks in advance. I will have many questions once it gets up and going again.