Q: E-throttle Setup??? [IS300 x 1JZ VVTi on AltezzaLink]

[TNCMAviator]

Hi, would like to ask if anyone has a Base Map for the JZX110/JZS171 or the 2J with the ETCS-i throttle body? or.. know what might be going on:

I have a very sloppy throttle and I cant figure out why.. and sometimes I get APS / TPS tracking error when I try to rev as well.

Car: 01' IS300 with 1JZGTE VVTi ETCSi out of a JZS171. Completely rewired to " Plug n Play " AltezzaLink G4X ECU.

Mods: GT30 Turbo is my only "big" modification, otherwise stock 1JZ, AEM 340 Fuelpump, stock injectors, FMIC.. Exh is 3" straight.

Got it to calibrate both TPS and APS but it still feels sluggish and just not acting the way it suppose to and I am lost with a solution. Just got it started the other day with the JZX100 Base map with some changes to it for the input n parameters matching the Altezza basemap, as well as switching some of the obvious stuff from the JZX100 that the JZX110/JZS171 do/dont have.. E throttle for example.. (also found it strange that the JZX100 basemap in the folder came setup with 500cc injectors.. I changed that as well to stock 370cc injectors.

 

Thanks In Advance.

[TNCMAviator]

20 hours ago, Adamw said:

If you want help with the tracking issue, please attach a log and your map so we have some information to work from.

Here is mine

Lexus IS300 x JZS171.pclx PC Datalog - 2021-02-17 1;28;41 pm ETHROTTLE FAULT.llgx

[TNCMAviator]

PC Datalog - 2021-02-17 1;28;41 pm ETHROTTLE FAULT.llgx

 

Ive added my basemap and log for the APS main / sub tracking error.

Lexus IS300 x JZS171.pclx

[Adamw]

Have you done the APS and TPS calibration?  It doesnt look like it, in the log your fault is due to the APS (pedal position) sensors not matching each other.

[TNCMAviator]

5 minutes ago, Adamw said:

Have you done the APS and TPS calibration?  It doesnt look like it, in the log your fault is due to the APS (pedal position) sensors not matching each other.

I calibrated the APS just before starting the log and TPS was already calibrated couple days ago..

[Adamw]

I've moved all your posts into this one thread instead of having multiple posts about the same subject.

Can you Set E-throttle mode to set-up, start a log, and press the pedal to the floor a couple of times, then save the log and attach.  The last log only shows a max of 78% APS so maybe your foot wasnt all the way down.

Your "Sloppy throttle" is just your soft E-throttle target set up, you are only asking for 9.8% throttle when the peddal is down 30% and only 50% throttle when the pedal is 80%, so the first 3/4 of your pedal travel is going to feel very soft.

 

[TNCMAviator]

27 minutes ago, Adamw said:

I've moved all your posts into this one thread instead of having multiple posts about the same subject.

Can you Set E-throttle mode to set-up, start a log, and press the pedal to the floor a couple of times, then save the log and attach.  The last log only shows a max of 78% APS so maybe your foot wasnt all the way down.

Your "Sloppy throttle" is just your soft E-throttle target set up, you are only asking for 9.8% throttle when the peddal is down 30% and only 50% throttle when the pedal is 80%, so the first 3/4 of your pedal travel is going to feel very soft.

 

 

PC Datalog - 2021-02-17 4;51;57 pm.llgx

[Adamw]

Can you get someone to sit in the car with foot on the floor and then check in the engine bay that the throttle cable has pulled the APS bell crank all the way open.  Something a bit funny with the voltage range on that aps sensor - almost looks like it is not moving as far as it should.

[TNCMAviator]

2 minutes ago, Adamw said:

Can you get someone to sit in the car with foot on the floor and then check in the engine bay that the throttle cable has pulled the APS bell crank all the way open.  Something a bit funny with the voltage range on that aps sensor - almost looks like it is not moving as far as it should.

I assume I’d have to remove my ic piping to see if the flap opens correct? It’s raining over here rn, Gonna try check that later tonight then.

[Adamw]

No, I mean just check that the bell crank that the cable connects to cant be turned any further by hand - it should be hard up against the stops already when pedal is on the floor

[TNCMAviator]

5 minutes ago, Adamw said:

No, I mean just check that the bell crank that the cable connects to cant be turned any further by hand - it should be hard up against the stops already when pedal is on the floor

Pedal to the floor, it still has tad bit under half an inch of travel until full but it doesn’t move back once an move it by hand.

[Adamw]

So you need to fix that first.  It could be the leverage ratio of the pedal not well matched, excessive cable freeplay - or something like too much carpet restricting the pedal movement.  But what ever the case, the crank on the throttle body should be hard up against the stop when the pedal is on the floor.

[TNCMAviator]

23 hours ago, Adamw said:

So you need to fix that first.  It could be the leverage ratio of the pedal not well matched, excessive cable freeplay - or something like too much carpet restricting the pedal movement.  But what ever the case, the crank on the throttle body should be hard up against the stop when the pedal is on the floor.

I adjusted the throttle cable, re calibrated both tps and aps.. I dont seem to be getting any more tracking errors, Ive ran the engine few times and revved with no issues, I guess its good now.. just on to the next problem.. where the car is revving but right after it goes into this up n down "phase" between 1000-1400rpm and the %fuel cut% keeps flashing red but remains at 0.. and by the looks of the afr, it seems to be cutting the fuel since it bounces between 14 n 17 afr.

Here's the log maybe u can see whats happening

PC Datalog - 2021-02-18 5;50;36 pm.llgx

[Adamw]

Give us a new log showing the problem.

[TNCMAviator]

1 hour ago, Adamw said:

Give us a new log showing the problem.

I seem to be getting rpm lockout on the Idle status and Ignition idle status as soon as I touch the gas pedal. attached the log

PC Datalog - 2021-02-18 7;40;20 rpm lockout.llgx

[Adamw]

1 hour ago, TNCMAviator said:

I seem to be getting rpm lockout on the Idle status and Ignition idle status as soon as I touch the gas pedal. attached the log

Correct that would be what is meant to happen.  Obviously you dont want the ecu to be controlling the idle when you have your foot on the gas or RPM is high.  

If the RPM is not dropping below the lockout then that means your base position table isnt tuned correctly.

There is no "up and down" phase in this log and no fuel cut.  Can you try to get a log that shows the behavior you want to fix?

[TNCMAviator]

11 minutes ago, Adamw said:

Correct that would be what is meant to happen.  Obviously you dont want the ecu to be controlling the idle when you have your foot on the gas or RPM is high.  

If the RPM is not dropping below the lockout then that means your base position table isnt tuned correctly.

There is no "up and down" phase in this log and no fuel cut.  Can you try to get a log that shows the behavior you want to fix?

I got the car to idle properly, it revs without any tps aps errors, but it’s weird that when I let off the pedal, it starts jumping between 1000-1300 rpm in an up n down rpm motion.. I noticed every time I let off.. the tps % is 4.1, rpm goes up n down for about 2-4sec until the tps is like 3.8 ish % then looking at the runtime value page, I see the idle control “kicks in” and idle normalizes and tps goes down to 3.5%.. 

[Adamw]

Give us a log to show this then please.  The log above doesnt.

[TNCMAviator]

On 2/18/2021 at 9:38 PM, Adamw said:

Give us a log to show this then please.  The log above doesnt.

Hey, so am got the car running, still cannot figure out why I constantly getting Error a code 77: APS Main and Sub Tracking Error.. due to APS Sub open Voltage reaching 5V, and APS error high value is also at 5V, and I cannot change the error value higher than 5V. No matter what I do with the APS settings and constantly calibrating it.. it will always hit 5V and trigger the fault code.

with e throttle in the ON position it cuts my throttle down to 1800rpm, but in Setup Mode I can still drive the car with the error present(and cel on) it’s the only way I could get the car tuned as well. I have tried changing everything in the ethrottle.. nothing works, error after error.. I’ve switched over main n sub analog inputs for both tps n aps, switched the aux 9/10 around, low to high on the state, just to see.. but nothing works.
So everything is back in its original state which is in the altezza base map.. of course I also copied all the values for the ethrottle system over to my base map because the jzx100 base map does not use the ethrottle since their intake is “ETCS” and mine is “ETCS-I” from the JZX110/JZS171. Only thing I have different to the altezza settings is that APS Sub 100% is set to 100%.

I can’t find or don’t know if there is any specific settings available online for my specific e throttle. (P gain, d gain, tps sub 100%, and those stuff) I will make a log tomorrow.

Btw, the cycling of the idle was due to the idle control settings being off and when it was on, it just wasn’t catching the idle properly due to incorrect settings for the table and stuff.. so that’s been fixed.

[Adamw]

1 hour ago, TNCMAviator said:

due to APS Sub open Voltage reaching 5V, and APS error high value is also at 5V, and I cannot change the error value higher than 5V. No matter what I do with the APS settings and constantly calibrating it.. it will always hit 5V and trigger the fault code.

Setting the error high to 5V disables the high error check.  It is fine for the APS voltage to reach 5V, that is not your problem. 

 

1 hour ago, TNCMAviator said:

but in Setup Mode I can still drive the car with the error present(and cel on) it’s the only way I could get the car tuned as well.

Do not drive the car in set up mode, there is a big warning that pops up to tell you not to do that, it disables all safety features and could potentially be dangerous.   

 

1 hour ago, TNCMAviator said:

I can’t find or don’t know if there is any specific settings available online for my specific e throttle. (P gain, d gain, tps sub 100%, and those stuff)

Error 77 means your two APS sensors arent matching.  It is nothing to do with any E-throttle settings.  In your last log the reason they didnt match was because you had calibrated your APS with the pedal only reaching something like 70% travel, so if you ever pressed the pedal a bit harder and it goes to say 72% then the calibration is no longer correct.  

 

Please give us a log of the error again.  Note you can set "When Stalled" setting to run so that you can do the log without the engine running.

[TNCMAviator]

7 hours ago, Adamw said:

Setting the error high to 5V disables the high error check.  It is fine for the APS voltage to reach 5V, that is not your problem. 

 

Do not drive the car in set up mode, there is a big warning that pops up to tell you not to do that, it disables all safety features and could potentially be dangerous.   

 

Error 77 means your two APS sensors arent matching.  It is nothing to do with any E-throttle settings.  In your last log the reason they didnt match was because you had calibrated your APS with the pedal only reaching something like 70% travel, so if you ever pressed the pedal a bit harder and it goes to say 72% then the calibration is no longer correct.  

 

Please give us a log of the error again.  Note you can set "When Stalled" setting to run so that you can do the log without the engine running.

In the car right now, gonna make the log for u.. btw its Error Code 76 I have now.. TPS main and sub tracking error, I think its both errors I get 77 and 76, but for now I'm gonnna clear the 76 and make the log running the throttle in the when stalled mode.

4 minutes ago, TNCMAviator said:

In the car right now, gonna make the log for u.. btw its Error Code 76 I have now.. TPS main and sub tracking error, I think its both errors I get 77 and 76, but for now I'm gonnna clear the 76 and make the log running the throttle in the when stalled mode.

its giving me Max total size of 180kb but the file is 1mb.. not letting me upload

[Adamw]

Each user gets a small upload allowance.  You can share the log using google drive, onedrive, dropbox or similar.

[wastegate]

The Toyota ETCS-i Accerator position sensor can go bad. I've heard of a number of them fail and I've had mine fail too, caused the ECU to shut the throttle down a couple of times leaving it in limp home mode. The APS main and the APS sub don't track evenly or the sub channel will drop to 0v randomly. It's caused by dry solder joints on the pads. If in the log you are seeing the APS lines not match (they have a offset) then perhaps it's something to look at.

 

This is the back of the APS, you can dremel it open, resolder it and then pot it with some epoxy or something to keep water out. 

 

 

The other think is to not push the Toyota throttle to 100% in the map, causes errors and the motor doesn't really like it. This has been passed down.

Here is my map, but just put in 99% instead of 100%.

 

 

[TNCMAviator]

I’m suppose to be getting the Driftmotion piece to convert the throttle today.. and I swear if that doesn't work I’m gonna look for a JZX100 throttle body because I’m done with this e-throttle nonsense.