P-Bus Topology
The extent of the P-bus depends on the special equipment of the vehicle.
The P-bus consists of a single copper wire. The wire color of the bus is uniform throughout the vehicle: BL/RT.
Due to the linear structure of the network, the P-bus is available for other modules in the event of a disconnected or failed control unit. The P-bus provides the diagnostic connection to the P-modules.
Always refer to the ETM to determine the exact wiring configuration for a specific model.