Resistor Module
WARNING: This page is about a different car, the 1995 Pontiac Firebird and 1995 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Resistor module is located in SIR harness between inflator module and DERM. Resistor module allows DERM to monitor deployment loop for faults and to detect when a deployment has occurred.
Resistors in resistor module are balanced with resistors on arming and discriminating sensors to allow DERM to monitor voltage drops across the components of the deployment loop. Faults are detected during normal undeployed conditions by monitoring these voltages. On some vehicles, resistor module is mounted on DERM.