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Home >> Porsche >> 2008 >> Cayenne Base, Automatic >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Vehicle Electrical System (BNSG) -- 9PA Cayenne >> Vehicle electrical system (BNSG) >> Introduction - vehicle electric system control unit >> Diagnostic conditions

Diagnostic conditions

NOTE: Important! Always connect a suitable battery charging device to the vehicle electrical system battery before starting diagnosis. All unnecessary loads must also be switched off.
NOTE: The fault can only be identified if the requirements listed under 'Diagnostic conditions' are met. For this reason, the specified procedure must be observed after a fault is repaired:
  1. Erase fault memory.
  2. Satisfy the requirements listed under 'Diagnostic conditions'.
  3. Read out fault memory again
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