Supplementary Restraint System Diagnostic Control Unit

The BECM communicates with the SRS DCU via hardwired connections. The BECM provides a secondary ignition feed output to the engine compartment fusebox. When the ignition switch is in position II, the BECM provides an output which generates an ignition supply to the SRS DCU from the engine compartment fusebox. See DESCRIPTION & OPERATION in AIR BAG RESTRAINT SYSTEMS article.