c200 1994 is it HMF or PMS
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c200
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c200
russel in case if im having a bad ECU !! and isnce its hard to find the exact part for the module number !! what alternative ECU would you suggest !!
will the 1994 c220 ECU fit in this ??
it has the same wiring as mine !!
in addition i can L and H pins
and the rest are the same !!
thanks you for your support !! appreciate it alot
will the 1994 c220 ECU fit in this ??
it has the same wiring as mine !!
in addition i can L and H pins
and the rest are the same !!
thanks you for your support !! appreciate it alot
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From: Cape town
not a merc
The diagram I sent is correct. U have no immobilized on your car? (No red green lamp on mirror ) then yes another ecu from any c220 will work. The wiring is all the same. I used wis 2010 for your diagram. What's your question re CAN H And L?
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c200
first of all merry Christmas 
and thanks for the diagram !! so another ECU in 1994 c220 will work !! and the new ECU will have L and H pins !! so it mean it will enable OBD2 connection ? am i correct ?
and thanks for the diagram !! so another ECU in 1994 c220 will work !! and the new ECU will have L and H pins !! so it mean it will enable OBD2 connection ? am i correct ?
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From: Cape town
not a merc
Merry Christmas to you too
Yes another HFM ecu will work without any issue. It will work the same as your current ecu. CAN H L has nothing to do with OBD. Like I said with no immobilizer you can just plug it in and start it up. I have test units I just plug into customers cars for testing. No problems. I have even used w124 units in a w202
Yes another HFM ecu will work without any issue. It will work the same as your current ecu. CAN H L has nothing to do with OBD. Like I said with no immobilizer you can just plug it in and start it up. I have test units I just plug into customers cars for testing. No problems. I have even used w124 units in a w202
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c200
Russel i did some further investigation ! i cleaned the spark plugs then it didn't back fire until the plugs become black again !! i think its out of mixture !! and it gives a terrible smell . well is the mixture controlled by the ECU and does my modle has a co2 potentiometer like in this vedio ? and i can see two sensors fitted to the exhuast manifold and the one after the catalytic !
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From: Cape town
not a merc
If it has 02 sensors it will NOT have co adjustment. Does it start? What is the coolant sensor value? U need a scanner to see value. What spark plugs are u using. F8DC4 Bosch plug is the correct one. Maybe just renew plugs.
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c200
yes it starts !! i have the maxi scan ms 509 and the ELM327 bluetooth obd2 scanner i have made an order for the launch creader cpr 123 but still i didnt get it !! and i rewired the whole engine loom looking at the wiring that you provided me !! rechecked almost 5 times to confirm ! the vehicle starts but back fires from intake !! and idle fluctuates !!
does the OVP has has connection with the mixture !! ??
does the OVP has has connection with the mixture !! ??
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c200
yes the vale timing is okay now !! gets power the wire had bad connections ! no air leaks !!
so Russel im still not sure ! my car is a 1994 model but obd2 is supported to the models which are 1996 or above !! will my new launch creader cpr123 support my car ? im really confused !!
so Russel im still not sure ! my car is a 1994 model but obd2 is supported to the models which are 1996 or above !! will my new launch creader cpr123 support my car ? im really confused !!
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From: Cape town
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I dont mean vvt. I mean the physical valve timing between crank and cam. You need to remove the cyl head cover and check the timing marks on the camshaft. Obd is a generic diagnostic protocol. Which uses the same communication commands for all obd complaint cars it is only used for engine ecu communication and is very limited in way of in depth diagnosis. Your car is not obd compliant! But your car is very much diagnosable using the MB protocol KWFB i think it is. The launch will be able to communicate with HFM and you will see all the data u need. Air mass.. coolant temp.. throttle position. Air temp.. Batt voltage.. status if throttle end stop is programmed yes/no and many more.
