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Old 09-19-2013, 12:10 PM   #38 (permalink)
oldbeaver
EcoModding Apprentice
 
Join Date: Oct 2008
Location: Chile
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Mercedes 89 D - '89 Mercedes 300 E
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1993 Mercedes 300D Turbo - '93 Mercedes Benz 300D Turbo W124
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Connecting to diesel injection signals.

Quote:
Originally Posted by AndrzejM View Post
Jose,

I think that the best way is to get all signals from ECU harness.
Regarding hardware that you need to buy, first of all you need zener diodes, resistors and working MPGuino. And it doesn't matter which version of the code you have.

Definitely scope would be handy to see what's going on between ECU and injection pump.
Ok, I will locate the ECU, make the connections and borrow a scope from someone to start testing.

First, I need to locate diesel ECU,

I think I have a working MPGuino which I may test connecting VSS signal and rpm signal, besides the power and zener diodes. Anyway, the MPGuino I have has its own zeners, and wants 12V input, from what I recall. This will be ok for testing.

I need to prepare a cable and plug to bring signals to MPGuino.

Will take pictures to share with the Forum.

OldBeaver
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Mercedes 300 D turbo 1993
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