Flash: Vehicle System Interface Module Enhancements
This bulletin involves updating the Vehicle System Interface Module (VSIM) software.
A customer may experience that the VSIM controlled systems become inoperative.
Upon further investigation the technician should find the following:
? There should be NO DTCs set, stored by or against the VSIM.
? VSIM?s hard wired outputs should be locked, but VSIM should be alive and
responsive on the bus.
? A battery hard reset restores the VSIM functionality.
