Electrical diagrams Bosch Motronic M1.7 - Alfa Romeo Bulletin Board & Forums

 
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post #1 of 10 (permalink) Old 12-16-2006, 11:25 AM Thread Starter
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Electrical diagrams Bosch Motronic M1.7

Hello all;

Let me introduce myself as it is my first post after several weeks browsing.
I own an open prototype fitted with a V6 24V (66302) coming from a 164.
It is a 600 Kgs car running with roughly 260/270 HP, not so bad if we take the power / weight ratio. Gearbox is FT200 Hewland, purely destinated for the track !

My concern today is that i am looking for the electrical diagram or schema of the Bosch Motronic M1.7 (164).

Would somebody know where i could find this on the web ?

Many thanks in advance !
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post #2 of 10 (permalink) Old 12-16-2006, 12:32 PM
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The www.cardisc.com CD 24v 164 has them but not sure anybody has posted them on web.

Here is some screen captures of 24v motronic ML1.7
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post #3 of 10 (permalink) Old 12-16-2006, 12:41 PM
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Here are two pages for 5-speed version but only real dfference I think is logic wires for A/T and interfaces wires to A/T ECU.
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Ciao, Alfisto Steve
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Daily drivers: USA models - 1991 164S Black Beauty II ALFISTO;

Daughter's current ride: BB1 my 164L and Her Granddads 2002 Ford Taurus is back up.

New parts hauler but not car hauler 2004 Jeep Grand Cherokee Overland 4.7L H.O. V-8

Needing TLC non-blackbeast the 93 164L

"A day without an Alfa whine is like a day without sunshine"
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post #4 of 10 (permalink) Old 12-17-2006, 03:45 AM Thread Starter
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Steve,

Thank you very much, it is exactly what i am looking for !

Sadly it is not possible to see in details on the pics you posted the wire colors ...

May i be a bit boring asking you if you could mail me these in high res to my mail address? => merguez78"at"free.fr

Thanks again
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post #5 of 10 (permalink) Old 12-17-2006, 06:12 AM
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Pics?

Could you post some pic of the prototype?

Currently Owned:
1957 Giulietta Spider (Maria - Fabrication in progress)
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post #6 of 10 (permalink) Old 12-17-2006, 06:40 AM
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Here're those pages in pdf ...
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File Type: pdf M1.7_wiring_1.pdf (106.9 KB, 1099 views)
File Type: pdf M1.7_wiring_2.pdf (373.0 KB, 832 views)
File Type: pdf M1.7_wiring_3.pdf (253.3 KB, 751 views)
File Type: pdf M1.7_wiring_4.pdf (240.4 KB, 739 views)
File Type: pdf M1.7_wiring_5.pdf (190.3 KB, 829 views)
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post #7 of 10 (permalink) Old 12-17-2006, 09:59 AM Thread Starter
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Wonderfull ! Many thanks for the help folks !!

Here are some pics of the car, it is a Lucchini prototype from 1992, the engine is the 3.0l 24V - 66302 currently open to solve a head gasket problem. I have to find the cam lockers to set the timing belt correctly ...













I am sorry but i have no pics of the car with the body fitted for the time, but i'll keep you awake on the subject

Yes as you can see i also own a GTV6 2.5l (and BMW CSL Grp5 ...)

Last edited by merguez78; 12-17-2006 at 11:19 AM.
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post #8 of 10 (permalink) Old 05-30-2007, 12:26 PM Thread Starter
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Guys,

For those of you who have an interest in such cars here it is currently:



So sad this blody hell engine refuses to start on the 5 others cylinders ...
Ciao
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post #9 of 10 (permalink) Old 05-31-2007, 09:52 AM
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So, what are the symptoms and what diagnostic information do you have?
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post #10 of 10 (permalink) Old 05-31-2007, 12:48 PM Thread Starter
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The car fires only on the cylinder #3 and very bad spark on the others when i disassemble the coil stick with the plug from the head.
The trouble occured after i tried to connect a Stack tachometer on the - wire (secondary) of one of the coil. I hope i didn't burnt the ECU.
I would be surprised as i disassembled it and i can not see any components burnt or burst. I must search again but it drives me crazy.

I check all the wires and so one, i suspect a grounding somewhere on the high voltage but where ?? (the tacho is now disconected of course ..)

Anybody would know which pin out n# it is to connect the diag light on the ECU?

EDIT : STEVE KINDLY ANSWERED ME; PIN 8 for the Diag light, Pin 74 for the Tacho.

Last edited by merguez78; 02-06-2008 at 07:00 AM.
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