Pps not reading in Tunerstudio

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AndreyB
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

https://github.com/rusefi/rusefi/wiki/Release-Snapshot-Latest-firmware

https://rusefi.com/online/view.php?msq=1384 says rusEFI 2022.12.08 which seems to be https://github.com/rusefi/rusefi/releases/tag/20221209_release

https://github.com/rusefi/rusefi/wiki/microRusEFI-Manual#software

While that would help explain ETB being disable by PPS issue that does not help us with PPS issue.

At the moment I am still puzzled by the precise zero raw value reading.
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

I am as well...
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Re: Pps not reading in Tunerstudio

Post by bill »

when you put the voltmeter on the signal wires from the pedal
with 5V and ground supplied to pedal
and move the pedal up and down
what are the voltages output on the wires?
0.5 to 3.5V on one output?
and
4.5 to 0.5 V on the second output?
that is normal for most bosch units
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

When I put the multimeter on the wires, I'm getting 2.38 on the primary at full throttle and 4.68 on the secondary at full throttle
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

Are you comfortable detaching PCB from rear cover and poking DMM into corresponding pin to check voltage on pin?

Did you crimp or was it a pigtail?
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

I did not crimp anything as i wanted to be sure things were working properly before crimping. Im not completely sure what all is involved in that process
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

huh? how are your wires connector to MRE? please post more pictures
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

Just twisted together at the moment
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

Oh now I see that you use MRE pigtail. Still same question - are you comfortable poking into back side of PCB with rear plate removed?

I am kind of running out of ideas :(
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

I'll take it off and take a look back there
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Re: Pps not reading in Tunerstudio

Post by bill »

Slim804 wrote:
Sat Feb 04, 2023 12:18 am
When I put the multimeter on the wires, I'm getting 2.38 on the primary at full throttle and 4.68 on the secondary at full throttle
sounds correct.
and around 0.5V on each when the pedal is at idle?
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

correct
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

Detached the PCB from rear cover and poked DMM into corresponding pin. Im getting the same voltage at the pins that I was getting at the wires on the pigtail.
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

i have a feeling that it's time to ship this unit to NJ
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

Ok,Just let me know when and where to ship. I'm located in Virginia.
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

Someone else has hit same AV4 drama and we have a theory now, stay tuned!

https://github.com/rusefi/hw_microRusEfi/issues/231
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

Just removed D7 please PM me your address for return!
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

If it still does not work type to unbolt from case and poke into pins on the back of the PCB, just be careful. Time to tipple-check if voltage gets all the way to PCB.
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Re: Pps not reading in Tunerstudio

Post by mi-hol »

@slim804 https://wiki.rusefi.com/HOWTO-M111-on-microRusEFI/#howto-m111-on-microrusefi contains
"Important suggestion: use Honda accelerator pedal position sensor (PPS) in the engine bay not Mercedes pedal position sensor"
no reason is given for this advise but I wonder if that is related to your issue
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--------
Benelli Tornado 900 Tre
Benelli TNT 1130 (rebuilding)
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Re: Pps not reading in Tunerstudio

Post by AndreyB »

mi-hol wrote:
Sat Mar 11, 2023 10:09 am
no reason is given for this advise but I wonder if that is related to your issue
Jimmy says Mercedes sensors are pretty unreliable.
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Re: Pps not reading in Tunerstudio

Post by mi-hol »

AndreyB wrote:
Sun Mar 12, 2023 5:26 am
mi-hol wrote:
Sat Mar 11, 2023 10:09 am
no reason is given for this advise but I wonder if that is related to your issue
Jimmy says Mercedes sensors are pretty unreliable.
none of the many car sensors is actually manufactured by the car companies themselves.
Nearly all parts have a dual supplier (or at least dual factory) strategy in order to avoid supplier lock-in.
In a given car model identical parts are coming from different supplier therefore.
When a part has a failure rate above a given percentage the supplier is reviewed and eventually banned.

Above very broad statement is not really helping to address the root cause.
Root cause is most often something like: sensor from supplier A manufactured in week n of year Y in factory F fails prematurely due to tooling issue.

I was working for a Mercedes supplier some years ago.
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Re: Pps not reading in Tunerstudio

Post by Slim804 »

Ok I’ll take a look into that because as of right now I’m still fighting this issue
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Re: Pps not reading in Tunerstudio

Post by bombaym111 »

Hi you everybody so someone can tell me how can I fix the Pedal position in tuner studio when i choose the right pin like 1er 31 and 2sec 30, not working still ERROR config Bye the way I use the lastes bandle thanks
Rusefi micro 0.6 version
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