Operation CHARM
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Mercedes Benz
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2003
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C 320 4MATIC Sedan (203.084) V6-3.2L (112.953)
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Initial Inspection (Description and Operation of ME-SFI Systems & Components)
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Electronic Ignition Switch Control Module, Location/Purpose/Design/Function
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Electronic Ignition Switch Control Module, Design
Electronic Ignition Switch Control Module, Design
Electronic Ignition Switch Control Module, Design
The EIS control unit (N73) consists of the electromechanical ignition switch, a control unit and an infrared transmitter and receiver.