Operation CHARM
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Porsche
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2009
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Cayenne S (9PA) V8-4.8L
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Repair and Diagnosis
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Accessories and Optional Equipment
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General Module
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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PCM/CDR23
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PCM2 External BOSE Amplifier
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Man Machine Interface (MMI)
Man Machine Interface (MMI)
Man Machine Interface (MMI)
The MMI is part of the PCM2 (on the main board). It runs the gateway commands via the wake-up signal line and the distribution line diagnosis.