Multiple Ignition Pulses At Start Up (Siemens Only)

To ensure good spark quality during engine start up the MS 41.1 control module pulses each ignition coil 9 times per 720 ° of crankshaft rotation. The multiple pulsing switches to single pulse after the engine has been running for a short period of time or:
- engine temperature > 55 °C
- engine speed > 800 RPM