ETCS-i DBW issue | AEM
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Steeezy
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Joined: 01/08/2019 - 07:06
ETCS-i DBW issue

Good Day Everyone,

I have an issue I been trying to troubleshoot for quite sometime now and needed some input.

I have a 1989 Nissan Silvia with a JZX110 Swap. I recently purcahsed AEM Infinity 6 with a jumper for the oem harness. After getting everything installed upon opening up the DWB setup wizard and notice the TPSA is showing 100% any idea what would cause this or if anyone would have a wire diagram I can go off of? 

 

AEM_HB
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Last seen: 1 week 5 days ago
Joined: 11/07/2016 - 09:22
Hey Steeezy,

Hey Steeezy,

I have not seen a successful integration of the ETCS-i set up on the AEM infinity ecu. That was a very early attempt at dbw and was half cable half dbw which does not have all of the sensors necessary for the ecu to control it.

I recommend deleting the "dbw" portion of that throttle and simply running with the standard cable throttle. Drift motion has a component for this linked below, give them a call to ensure it is compatible with that motor/tb setup.

https://www.driftmotion.com/2JZ-GTE-VVTi-ETCSi-Drive-By-Wire-Delete-p/dm...

Steeezy
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Last seen: 1 year 1 month ago
Joined: 01/08/2019 - 07:06
Just wanted to touch up on

Just wanted to touch up on this... I received the Drive By Wire Delete on Tuesday and installed Thursday car is running with no issue now! Thanks for the Quick response!

Aetoc
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Joined: 04/18/2016 - 23:49
I just wanted to add to this

I just wanted to add to this discussion, in case anyone else has issues. Now, none of this will matter if the DBW throttle is different on the 1JZ VVTi from the 2JZ VVTi, but if the wiring is the same (which I would assume it is) then this will be the same.

All you have to do is look up a wiring diagram for the throttle body connectors. There is one connector for TPS, one for PPS (pedal posistion) and one for Motor control. The tps and pps both have the standard 5v sensor power and ground. The part that makes the DBW work, is that the TPS and PPS both have two signal outputs that need to be wired into the ECU to work.

For the TPS, one output goes to analog 7 (on 506 & 508) and the other goes to another free analog input. The PPS outputs go to analog 18 and 19 (DBW_APP1 & DBW_APP2).

And finally, the large 4 pin connector is for the DBW motor and clutch. The clutch is a factory safeguard so that if there is any problem with the throttle, it will disengage the motor from the throttle plate and allow it to close. In order for the infinity to control the throttle, this clutch needs to have +12v switched power and ground at all times when the key is in the ON and CRANK positions. There is no polarity on these wires. The other two wires are for the motor itself, they just need to be wired into the ecu at the DBW1 Motor+ and DBW1 Motor- pins (62 and 61 on 506 and 508).

You may have to reverse either the two TPS signal wires, or the PPS signal wires, or the two motor +/- wires, or all three, until the ECU reads it correctly. Fortunately, the inifinty is smart enough to suggest which wires need reversing if there are errors. (I had my PPS and motor wires reversed and it let me know)

That's all there is to it. It's wired just like any other DBW system, like the GM LS throttle body. The only real difference is the clutch. I've been using the ETCS-i throttle for almost 3 years with no issues.

Scrufffy
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Joined: 04/11/2019 - 21:07
Aetoc, thank you so much for

Aetoc, thank you so much for this! I figured out how to wire everything but the clutch. I've been looking everywhere to find out whether the clutch took 5v or what I thought was more likely, 12v, and which pin was ground. After 2 days of vauge answers and people saying it wasn't possible, I literally made an account on this board to thank you.

I only made this account to tell one person thank you.

Kris OK
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Last seen: 7 months 2 weeks ago
Joined: 11/22/2019 - 20:37
It may not matter, but the

It may not matter, but the Toyota documentation states the ground for the clutch "CL-" is to be 250Hz @ 50% duty cycle. This is how mine is wired and works as it should. If it's been 3 years operational for Aeotec, it probably doesn't matter but it is worth mentioning.

0xJX
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Last seen: 3 months 2 weeks ago
Joined: 03/23/2020 - 17:11
Hi, also running to few

 

Hi, also running to few issues with this DBW.

It runs usually fine when driving the car, but when I slowly get it up to 65-70%, it throws DBW_ERROR_APP_COR and disables the whole DBW.

This has happened few times when driving and forces me to get side of the road and shutdown the car and start it again to get rid of the error/limp, but it´s easier to replicate when the car isn´t running.

When the limp hits, it goes to 2000rpm and drops to 1000 and keeps looping that and ignores the pedal input. Error keeps toggling on and off.

Here it disables the DBW when kept there:

Supra MKIV TT VVTi 5spd 94' (Infinity 506)

AEM_NS
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Joined: 06/06/2014 - 09:31
APP Correlation Error.  Do

APP Correlation Error.  Do you know what APP means?

0xJX
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Last seen: 3 months 2 weeks ago
Joined: 03/23/2020 - 17:11
Accelerator Pedal Position.

Accelerator Pedal Position. And yes, normally the "Setup Wizard" sets everything correctly for you but the voltage ranges of this system are different and the "Wizard" doesn’t always set it properly. Going to try manually.

Supra MKIV TT VVTi 5spd 94' (Infinity 506)

AEM_NS
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Joined: 06/06/2014 - 09:31
The DBW Setup Wizard is a

The DBW Setup Wizard is a stand alone program that runs within Infinity Tuner.  It samples your DBW and APP signals and then sets min, max and correlation values accordingly.  It doesn't make mistakes and the idea that it doesn't always set it properly is invalid.  It sets the values based on whatever it samples.  If the signals it's sampling have a problem, then this may result in bad settings.  If you're getting an APP correlation error it's because the relationship between the 1 & 2 APP traces do not match what was sampled and set by the wizard.  You most likely have either a wiring problem or a bad/degraded/worn out APP or the 1 & 2 traces need to be swapped.  You can see right from your screen shots that something is wrong because your APP 2 values is over 100%.  

I suggest adding the APP channels to a plot and then taking a log while doing the wizard.  Look and see what the values are doing.  Then look at see what happens when the error is triggered.  The data will tell you exactly what's happening.

0xJX
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Last seen: 3 months 2 weeks ago
Joined: 03/23/2020 - 17:11
The wiring is brand new,

The wiring is brand new, mostlikely worn ETCS-I sensors in this case. But manually changing the DBW_Bias, DBW_APP_12_Rel, DBW_FB_Multiplier & small PID adjustment fixed it and it might pop up for a fraction when quickly releasing the pedal. But doesn't do it at 65-70 anymore and give me a limpmode while driving.

Supra MKIV TT VVTi 5spd 94' (Infinity 506)

AEM_NS
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Joined: 06/06/2014 - 09:31
DBW Bias, DBW FB Multiplier

DBW Bias, DBW FB Multiplier and control PID adjustments only affect the electronic throttle body itself and don't have anything to do with the APP.  Manipulating the APP 1/2 Relative tables may mask whatever underlying problem you have and "new" wiring doesn't preclude the sensor being wired incorrectly or still having some other wiring problem.  Like I mentioned before, an APP reading should never be more than 100% so that's a clue that something isn't right.  As I suggested before, it'd be a very good idea to log the APP 1 & 2 values and analyze them closely.  You could have a 5v or sensor ground issue.  The DBW safety functions aren't built in to be nuisances - they're for your protection so it's a good idea to have the system setup in a way that DBW works satisfactory and the safety features function correctly.

watchersa021
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Joined: 12/27/2019 - 19:03
I have a 2jzgte vvti swapped

I have a 2jzgte vvti swapped is300 and this is the error I got. Car isn't tuned yet. Am using the AEM provided basemap. Any idea how I can correct this. When engine is running i can barley rev the engine. 

Mr. Will

Aetoc
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Joined: 04/18/2016 - 23:49
The image you posted is

The image you posted is broken for me. You are getting an APPS error? Like was stated above, there are a couple of things that could cause that. For me I had two issues on two seperate occasions (with two different harnesses) where the the two pedal position sensor wires were reversed, and I just repinned them in the ECU connector. This problem will also occur if the two TPS signal wires are switched. Also, if your PID settings are way out to lunch, that can cause it to go into limp mode, but you won't get an APPS error. Lots of things to consider.

 

watchersa021 wrote:

I have a 2jzgte vvti swapped is300 and this is the error I got. Car isn't tuned yet. Am using the AEM provided basemap. Any idea how I can correct this. When engine is running i can barley rev the engine. 

Aetoc
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Joined: 04/18/2016 - 23:49
This is good to know, as I

This is good to know, as I was unable to find this information when I looked in the past. There is a possibility that running a constant 12v to the clutch could cause the solenoid to wear out prematurely. I'm unfortunately out of LS outputs, so it's gonna stay how it is for now.