Econoline E550 V10-6.8L VIN S (2003)
The powertrain control module (PCM) is on the SCP communication network. The PCM controls the engine for better fuel economy, emissions
control and failure mode detection and storage. Refer to Symptom Charts in Computers and Control Systems.
The natural gas vehicle module (NGVM) is on the SCP communication network.
The NGVM has separate injector drivers to run the injectors at the higher operating pressure of natural gas. The NGVM does not perform any
calculations for this function; calibration for the injectors is maintained in the PCM.
ISO 9141 Communication Network
The electronic crash sensor (ECS) module is on the ISO 9141 network. The ECS controls the deployment of the air bags based on sensor input. Refer
to Air Bag Systems.
The 4-wheel anti-lock brake system (4WABS) is on the ISO 9141 network. The 4WABS controls the brake pressure to the four wheels to keep the
vehicle under control while braking.
