Me7.5 from AWT - analogue RPM output and check engine output.

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ratosluaf

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	Me7.5 from AWT - analogue RPM output and check engine output. « on: February 26, 2023, 10:20:04 PM »

Hello, I am in progress of swapping 1.8t (engine code AWT) to another chassis. I need to work around analogue RPM signal to tacho and check engine signal. I found that I can use pin 37 for RPM signal and pin 47 for check engine light but this info is for transverse mounted engines.
My ecu number is 4b0906018dh, and what i get from pinout is i don't even have cable on pin 47, and pin 37 is used to A/C system. I tried to search for info on the web, but found nothing. Maybe someone can help me before I get oscilloscope and check all the pins in ecu?


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JeanAwt

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	Re: Me7.5 from AWT - analogue RPM output and check engine output. « Reply #1 on: February 27, 2023, 11:51:35 AM »

if it can help you


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A4 B5 avant 1.8T 2000 NO QUATTRO

JeanAwt

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	Re: Me7.5 from AWT - analogue RPM output and check engine output. « Reply #2 on: February 27, 2023, 11:52:47 AM »

...


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A4 B5 avant 1.8T 2000 NO QUATTRO

ratosluaf

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	Re: Me7.5 from AWT - analogue RPM output and check engine output. « Reply #3 on: February 27, 2023, 10:15:46 PM »

Thanks. According to that, analog RPM output is still there on pin 37. I also found in 2000 Audi A4 wiring diagram that 47 should be check engine light and 48 epc light. Will try and check. Thanks!


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ratosluaf

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	Re: Me7.5 from AWT - analogue RPM output and check engine output. « Reply #4 on: March 21, 2023, 03:42:53 AM »

Yup, rpm on pin 37, check engine on pin 47 - ecu grounds it when mil is on. Everything works fine.


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