SAAB CDI CASSETTE INFO
Schematic of the CDI Cassette on a SAAB 9-5 1998
430=Engine Controle Module (Trionic 7)
229=System Relay
Trionic does not have camshaft position sensor, it uses ion-sense in the CDI cassette to tell ECM which cylinder that is combusting.
In CDI cassette there are two "DET" components which means detonation sensing, one for cylinder 1+2 and one for cylinder 3+4, the "K" means signal upon knock and the "C" means signal upon combustion.
Upon start the ECM does not now which cylinder of number 1 and 4 that is in compression stroke and which that is in exhaust so ignition will happen on both, after that the ion-sense component
of the CDI cassette will sense which cylinder that actualy did a combustion and voilá - we have sync...
Will try to find a better pic in time.
// Michael Pihlblad a.k.a. glidarn