Chime Warning Requests

The EMIC is programmed to request chime service from the Central Timer Module (CTM) when certain indicators are illuminated. When the programmed conditions are met, the EMIC generates an electronic chime request message and sends it over the PCI data bus to the CTM. Upon receiving the proper chime request message, the CTM activates an internal chime tone generator to provide the audible chime tone to the vehicle operator. (Refer to CHIME WARNING SYSTEM ). Proper testing of the EMIC, the CTM, the PCI data bus, and the electronic chime request messages sent by the EMIC to the CTM requires the use of a DRBIII(R) scan tool. Refer to the appropriate diagnostic information.