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Home >> BMW >> 2003 >> 760Li >> Repair and Diagnosis >> Engine Performance >> System >> Med 9.2.1 Engine Management System - Overview >> MED 9.2.1 Engine Management System >> Power Supply >> Pt-Can
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Power Supply: Pt-Can

  1. What are the circuit descriptions of the three wires that make up the PT-CAN bus? 

    ____________________________________________________________________________

  2. Record the voltage levels on the PT-CAN bus (high and low) using the DISplus scope as shown - when the bus is: 

    Inactive - high __________ low _____________ Active - high _____________ low ____________ 

    Notes on setup: ________________________ 

    Fig 1: BMW Test System Oscilloscope Display
    G03390441Courtesy of BMW OF NORTH AMERICA, INC.
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