No Primary ignition
 

Help I have a 91 500SL, no spark Test at #1 post on coils no waveform, test crk and cmp sensors ok, pin test ignition module all good, try 2 known good modules nothing, try to pull code in engine ECU cannot get codes with Baum scanner, suspect engine module. Did check pin to ECU from ign. module OK
Any ideas out there:confused: Thanks and Happy New Year

howdy gasser? have you solve your problem? ...i guess we have the same engine on your 129, mine's a 300TE 24V with the same problem...:(