Electronic Crash Sensor (ECS)

WARNING: This page is about a different car, the 2002 Ford RV Cutaway, 2002 Ford Econoline, 2002 Ford E550 Super Duty, 2002 Ford E450 Super Duty, and 2002 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: There are 3 types of E-Series (Econoline) air bag ECS modules: 2 igniter system for school bus, 3 igniter system for cargo van and 4 igniter system for passenger van. These ECS modules have unique part numbers and are not interchangeable.

The Electronic Crash Sensor (ECS) module, also known as diagnostic monitor, is located behind right cowl side kick panel. The ECS module contains a microcomputer, which monitors electrical system components and connections. ECS module performs a system self-check of air bag system internal circuits every time ignition switch is turned to RUN position. ECS module also energizes AIR BAG warning light during initial system self-check and whenever a fault is detected. Faults are stored in ECS module memory and translated into Light Flash Codes (LFC) which are displayed through AIR BAG warning light. ECS module also communicates through Data Link Connector (DLC) current and historical Diagnostic Trouble Codes (DTCs).

If a system fault exists and AIR BAG warning light is malfunctioning, ECS module will activate an audible chime or buzzer, indicating need for service.