RELAY CONTROL BETWEEN POWER DISTRIBUTION CENTER AND BODY CONTROL MODULE

摘要

Electrical devices in a vehicle engine compartment are controlled from the vehicle passenger compartment over a serial data bus that extends between a relay controller located in the engine compartment and a body control module located in the passenger compartment and which receives commands from various passenger compartment devices. A serial data link passing through the firewall couples the body control module to the relay controller.

主权项

1. A system for controlling electrical devices in a vehicle engine compartment, the vehicle comprising a passenger compartment and a firewall separating the engine compartment and passenger compartment, the system comprising:
a plurality of relays located in the engine compartment, each relay being responsive to receipt of a control signal from a relay controller; a relay controller located in the engine compartment and coupled to said relays, the relay controller having a plurality of outputs and a serial port, each output being coupled to a corresponding relay and configured to actuate the relay responsive to a corresponding input signal received by the relay controller at its serial port; a body control module located in the passenger compartment, the body control module having a serial port, configured to send and receive signals between the serial port of the relay controller; t c; and a serial data link passing through the firewall and coupling the body control module to the relay controller.