A system for suppressing fire on a vehicle including at least one of an occupant compartment, an engine bay, a fuel tank, a cargo hold, a wheel well and an occupant egress, the system providing an electrical loop, comprising: an electronic control module disposed on the vehicle; a first sensor configured to detect fire in a first one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; a second sensor configured to detect fire in a second one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; a first data bus (A) operatively coupling the electronic control module with the first and second sensors ; a first node configured to release a first fire suppressing agent in the first one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; a second node configured to release a second fire suppressing agent in the second one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; and a second data bus (B) operatively coupling the electronic control module with the first and second nodes , the second data bus (B) communicating with the first and second nodes independently of the first data bus (A) communicating with the first and second sensors ; wherein polls on the first data bus (A) from the electronic control module to the first and second sensors include smaller size messages that occur more frequently than polls on the second data bus (B) from the electronic control module to the first and second nodes ; wherein the first data bus (A) operatively couples the electronic control module with the first and second sensors in a first electrical loop completed by a first terminator module ; and wherein the second data bus (B) operatively couples the electronic control module with the first and second nodes in a second electrical loop completed by a second terminator module . an electronic control module disposed on the vehicle; a first sensor configured to detect fire in a first one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; a second sensor configured to detect fire in a second one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; a first data bus (A) operatively coupling the electronic control module with the first and second sensors ; a first node configured to release a first fire suppressing agent in the first one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; a second node configured to release a second fire suppressing agent in the second one of the occupant compartment, the engine bay, the fuel tank, the cargo hold, the wheel well and the occupant egress; and a second data bus (B) operatively coupling the electronic control module with the first and second nodes , the second data bus (B) communicating with the first and second nodes independently of the first data bus (A) communicating with the first and second sensors ; wherein polls on the first data bus (A) from the electronic control module to the first and second sensors include smaller size messages that occur more frequently than polls on the second data bus (B) from the electronic control module to the first and second nodes ; wherein the first data bus (A) operatively couples the electronic control module with the first and second sensors in a first electrical loop completed by a first terminator module ; and wherein the second data bus (B) operatively couples the electronic control module with the first and second nodes in a second electrical loop completed by a second terminator module . <EOS>