Ignition control unit for CX1 MA-P, built in 1983

Hello, after the CX has run perfectly until 2 years ago, then 2 years ago was put into the garage and now should be started there is no ignition spark. The cables have all good contact. The ignition coils have been tested, are fine. There is missing the correct control signal = mass to PIN 3 of the 2-pin plug from the ignition control unit to the 2 ignition coils. Who can help ???? Who has a suitable ignition control unit? Messages please to: e-mail: Attigfilm@ t-online.de G Rüße, Hans