c220 1995 model diagnostic plug

harjeet

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hi guys anyone have or know what the diagnostic plug layout is and what each pin does?? thanks
 

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Do this at your own risk it?s from auto data CD
Ensure engine is switched off, and then bridge a switch able link between terminals 1&4 connect a test lamp between 3&4 the positive side of test lamp must be connected to pin 3.
Switch on ignition operate switch link for 2-4 seconds and count LED flashes.
Then compare with trouble code tables if you post the number of flashes I will check code
 
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