Restraint Deployment Indicator (RDI)
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The RDI is an input signal sent from the restraint control module (RCM) to the PCM indicating an air bag deployment. The signal is a zero to VPWR 50% duty cycle, that is .83 Hz for a normal condition, and 5 Hz indicates a deployment event has occurred. Refer to SUPPLEMENTAL RESTRAINT SYSTEM .