BMW M50 Engine Motronic 1.3 Ignition System Wiring Diagram On 1993 BMW M50 Engine series, the ignition timing is electronically controlled and not adjustable using the Motronic 1.3. The DME control module uses engine load, engine speed, coolant temperature, and intake air temperature as the basic inputs for timing control. A direct is used. Individual coils are mounted directly above each spark plug. Each coil can be selectively controlled by the DME control module on a cylinder-by-cylinder basis.

The following schematic shows the 1993 BMW M50 Engine Motronic 1.3 Wiring Diagram which consists of: battery, , ignition coil, distributor, spark plugs and .

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