DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 06 revised release October 2021
If all 17 modules (AE41 to AE57) are showed as Not Responding and Active Fault, the problem could be:
• A short circuit somewhere on the DL0H, DL0L (BBUS MUX) network.
• The network is completely open circuit. That means none of the two termination resistors are
connected.
Several simple tests can be done to locate the problem.
Use the spare “FRONT ELECTRICAL COMPARTMENT to MAIN POWER COMPARTMENT” CAN
FRONT ELECTRICAL COMPARTMENT: disconnect C1 and connect C1 pin housing to C1S socket housing.
RJB: disconnect C3 and connect C3 socket housing to C3S pin housing.
5
th
baggage compartment: disconnect C100 and connect C100 pin housing to C100S socket housing.