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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Information Center - Instrument Cluster (Ic), Message Center, & Warning Chimes) >> Diagnostic Tests >> Instrument Cluster (IC), Message Center and Warning Chimes >> Principles of Operation >> Instrument Cluster >> Instrument Cluster (IC) Gateway Function

Instrument Cluster (IC) Gateway Function

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The instrument cluster (IC) acts as a gateway module by receiving information in one format and transmitting it to other modules using another format. For example, the instrument cluster (IC) receives the vehicle speed data from the PCM over the high speed controller area network (HS-CAN), converts the data into a medium speed controller area network (MS-CAN) message and sends (gateways) the message to other network modules such as the heating ventilation air conditioning (HVAC) module, the audio control module (ACM), and the SJB. This enables network communication between modules that do not communicate using the same network (HS-CAN or the MS-CAN).

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