E 150 1/2 Ton Van V8-5.4L SOHC VIN L (1997)
Information Bus: Description and Operation
INFORMATION BUS and MODULE CONFIGURATION
The vehicle has two module communication networks. The Powertrain Control Module (PCM) is connected to the Standard Corporate Protocol
(SCP), which is an unshielded twisted pair of wires Data Bus Plus, Circuit 914 (T/O) and Data Bus Minus, Circuit 915 (P/LB). The Air Bag
Electronic Crash Sensor (ECS) module and any of the optional modules are connected to the ISO 9141 Link via a single wire Circuit 70 (LB/W]).
-
The PCM is on the multiplex communication network. The PCM controls the engine for better fuel economy, emissions control and failure
mode detection and storage.
-
The ECS module is on the ISO 9141 Link network. The ECS controls the deployment of the air bags based on sensor input.
-
The 4-Wheel Anti-Lock Brake System (4WABS) is on the ISO 9141 Link network. The 4WABS controls the brake pressure to the four
wheels to keep the vehicle under control while braking.
COMBINING MULTIPLE MODULE COMMUNICATIONS TO ONE ACCESS POINT