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Fig. 6: Identifying Cylinder 1 To 8 Ignition Coil - Location Engine 113 IGNITION COILS, FUNCTION - GF15.10-P-3102-02A Each spark plug is actuated separately via its own ignition coil by the ME control unit. Both ignition coils of a The ME control unit actuates the primary wirings (L1) of the double ignition coils at circuits 1 a or 1 b with The primary current flow is interrupted at the moment of ignition timing point. As a result of the sudden The voltage supply of the double ignition coils is protected at circuit 15 (a). Diodes are built-in to suppress additional ignition sparks when the primary current is switched on.
Because of the diodes, it is not possible to measure the resistance in the secondary windings.
2001 Mercedes-Benz ML320 1998-2005 ENGINE Electrical System - Engine - 163 Chassis
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