Pcmlogger EGR/WB profile

They go by many names, P01, P59, VPW, '0411 etc . Circa 1999 to 2006. All VPW OBD2 PCMs.
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Pcmlogger EGR/WB profile

Postby joukoy » Thu Sep 03, 2020 2:48 am

Hello.

What is wrong? I can't get WB readings to pcmlogger.
Wrong PID? Wrong bytecount?

I have analog output from WB connected to EGR (Blue pin55 = signal, Blue pin 41 = signal ground)
B1301 - EGR System Enable is "set"

Added profile for WB logging:
Code: Select all
    <Parameter Name="AFR (EGR)" DefineBy="Pid" ByteCount="1" Address="0x2811">
      <Conversion Name="AFR" Expression="(x*2.3750) + 7.3125" />
    </Parameter>

Wiring info from:
https://download.efilive.com/Tutorials/ ... torial.pdf

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Re: Pcmlogger EGR/WB profile

Postby kur4o » Thu Sep 03, 2020 3:36 am

Where did you get that address[2811].

I look at the list and 114b is the egr pid, You need to log that one, byte count is 1.

If you still have problems some patch work can be done to display the egr 16bit a/d channel. Or some other free a/d channel. Some testing with 5v will be needed. What OS you are running.

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Re: Pcmlogger EGR/WB profile

Postby joukoy » Thu Sep 03, 2020 3:49 am

Pid is from HPT forum, for example:
https://forum.hptuners.com/showthread.p ... hrough-EGR

Tested with pid 0x114b , AFR is still 7.31 all the time.

Maybe wiring problem, I will unplug pcm tomorrow and measure volts from connector.

Edit: OS 12587603

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Re: Pcmlogger EGR/WB profile

Postby kur4o » Thu Sep 03, 2020 3:54 am

114b is some converted value so it might not work right I will look to add some patch to stream directly the 16 bit a/d.

The 1mb pcm can have egr signal at other pin. I will look for some schematics to confirm the egr input pin.

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Re: Pcmlogger EGR/WB profile

Postby joukoy » Thu Sep 03, 2020 3:58 am

kur4o wrote:114b is some converted value so it might not work right I will look to add some patch to stream directly the 16 bit a/d.

The 1mb pcm can have egr signal at other pin. I will look for some schematics to confirm the egr input pin.


I can use another a/d channel, if it makes this easier.
For example "Fuel tank pressure"
AC is not preferred because I have a dream about functional AC in future.

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Re: Pcmlogger EGR/WB profile

Postby kur4o » Thu Sep 03, 2020 4:22 am

I can`t find egr input pin for the 1mb.

Pin 64-green is for the fuel tank pressure signal. I will look for the pid number. It is $114e. Check if the os support it, if not a simple patch will fix it.

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Re: Pcmlogger EGR/WB profile

Postby joukoy » Thu Sep 03, 2020 4:32 am

kur4o wrote:I can`t find egr input pin for the 1mb.

Pin 64-green is for the fuel tank pressure signal. I will look for the pid number. It is $114e. Check if the os support it, if not a simple patch will fix it.


Where is signal ground? Pin 23-Blue ?

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Re: Pcmlogger EGR/WB profile

Postby In-Tech » Thu Sep 03, 2020 5:12 am

Hope this helps,
-Carl
2003-07pcmpinouts.pdf
(215.35 KiB) Downloaded 7 times

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Re: Pcmlogger EGR/WB profile

Postby bubba2533 » Thu Sep 03, 2020 5:52 am

You can read the ram address without any patch with PCMLogger.

Try this:

Code: Select all
    <Parameter Name="AFR (EGR)" DefineBy="Address" ByteCount="2" Address="0xfff2c0">
      <Conversion Name="AFR" Expression="(x*2.3750) + 7.3125" />
    </Parameter>


Not sure of the conversion, but that is the raw EGR ADC ram address.

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Re: Pcmlogger EGR/WB profile

Postby kur4o » Thu Sep 03, 2020 6:14 am

joukoy wrote:Where is signal ground? Pin 23-Blue ?


PIn23-blue is the low reference, but you can use any pcm ground. Some widebands don`t have a separate ground path, just the 0-5v signal wire.\

Hope this helps,
-Carl

2003-07pcmpinouts.pdf
(215.35 KiB) Downloaded 1 time


I looked at the pinout and still no egr pin. I am sure it is there, including other ad inputs, someone needs to reverse the pcm and match them with the ram address. I think I found where the ad channels are stored from the tpu and there are lots of them.

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