Occupant Restraint Controller: Description

Fig 1: Occupant Restraint Controller Location

Courtesy of DAIMLERCHRYSLER CORP.

The Occupant Restraint Controller (ORC) is also sometimes referred to as the Airbag Control Module (ACM). The ORC is mounted on the tunnel floor pan, between the transmission shifter and parking brake. See Fig 1.

The ORC contains a microprocessor, the impact sensing device, and energy storage capacitors. The microprocessor contains the airbag system logic. The airbag system logic includes On-Board Diagnostics (OBD) capability, and communicates with the instrument cluster circuitry on the Programmable Communication Interface (PCI) data bus to control the airbag indicator lamp.