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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1690 (Information Center - Instrumentation, Message Center And Warning Chimes) >> Diagnostic Tests >> Instrumentation, Message Center and Warning Chimes >> Principles of Operation >> Instrument Cluster (IC) >> Instrument Cluster (IC) Network Messages

Instrument Cluster (IC) Network Messages

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

The instrument cluster (IC) uses input messages from other modules to control the gauges, informational indicators and warning indicators over the communication networks. If a required message is missing or indicator that requires the message remains at the last commanded state based upon the last known good message.

NOTE: Whenever a network message is suspected as missing and confirmed by a missing message DTC (U-code), it is important to look for other symptoms that may also be present in the instrument cluster (IC) and throughout the vehicle. Once a DTC is set in the instrument cluster (IC), it may be helpful to review the complete message list available in MODULE COMMUNICATIONS NETWORK article to see what other modules also rely on the same message and run the self-test for those modules. If the message is missing from other modules, the same DTC may also be set in those modules. Confirmation of missing messages common to multiple modules may indicate that the originating module is the source of the concern or the communication network may be experiencing some problems.
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