Structure of an ignition module - GF15.15-P-3101-02M

Fig 1: Identifying ECI Ignition Module Right Bank Of Cylinders And Left Bank Of Cylinders

Courtesy of MERCEDES-BENZ USA

Mechanical structure:

An aluminum die cast housing with plastic cover. One ignition module per cylinder bank with 12 ignition coils integrated into the spark plug sockets.

Electrical structure:

Printed circuit board with discrete components (condensers, resistances etc.), microchip and ion current evaluation filter. Oscillating circuit with control and regulating circuit for the ignition output stages.

Switching-over between the 180 volt main voltage and the auxiliary voltage (about 23 volts).

There are seals in the spark plug socket (1) to protect the ignition coils.

The seals (1) must be replaced for each removal/installation of ignition modules.

Fig 2: Identifying Seals In Spark Plug Socket

Courtesy of MERCEDES-BENZ USA