sage is received over the PCI data bus from the PCM requesting “Water-in-Fuel” indicator illumination. This
warning will only occur once during any ignition cycle.
The EMIC provides chime service for all available features in the chime warning system. The EMIC relies upon its
internal programming, numerous hard wired inputs, and electronic message inputs received from other modules
over the PCI data bus to provide the chime warning system features. The internal programming of the EMIC deter-
mines the priority of each chime request input that is received, as well as the rate and duration of each chime that
is to be generated.
The hard wired chime warning system inputs to the EMIC, as well as other hard wired circuits for this system may
be diagnosed and tested using conventional diagnostic tools and procedures. However, conventional diagnostic
methods may not prove conclusive in the diagnosis of the EMIC, the PCI data bus, or the electronic messages
received by the EMIC from other modules. The most reliable, efficient, and accurate means to diagnose the EMIC,
the PCI data bus, or the electronic message inputs used for the chime warning system requires the use of a diag-
nostic scan tool. Refer to the appropriate diagnostic information.
DIAGNOSIS AND TESTING
CHIME WARNING SYSTEM
WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental
restraint system before attempting any steering wheel, steering column, airbag, occupant classification sys-
tem, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect
and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge
before performing further diagnosis or service. This is the only sure way to disable the supplemental
restraint system. Failure to take the proper precautions could result in accidental airbag deployment.
The hard wired chime warning system inputs to the ElectroMechanical Instrument Cluster (EMIC), as well as other
hard wired circuits for this system may be diagnosed and tested using conventional diagnostic tools and procedures.
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and con-
nector repair procedures, details of wire harness routing and retention, connector pin-out information and location
views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods may not prove conclusive in the diagnosis of the EMIC, the Program-
mable Communications Interface (PCI) data bus, or the electronic message inputs used by the EMIC to provide
chime warning system service. The most reliable, efficient, and accurate means to diagnose the EMIC, the PCI data
bus, and the electronic message inputs for the chime warning system requires the use of a diagnostic scan tool.
Refer to the appropriate diagnostic information.
8B - 16
CHIME WARNING SYSTEM
KJ