Restraint Control Module (RCM)

The RCM is on the international standards organization (ISO) 9141 communications network. The RCM controls the deployment of the air bags based on sensor input. The ISO 9141 communications network does not function if the circuit is shorted to ground or battery voltage. Check the communications network circuit 70 (LB/WH) between the RCM C310a and the DLC C251. The total resistance value must not be more than 5 ohms. If the resistance is more than 5 ohms, there is an open circuit in the ISO 9141 communications network, damage to the DLC C251, damage to the RCM C310a, or a problem in the in-line connector. For additional information, refer to SUPPLEMENTAL RESTRAINT SYSTEM .