Principles of Operation

The instrument cluster is a configurable, hybrid electronic cluster (HEC) that contains a microprocessor, gauges, indicator lamps, and internal circuitry. The instrument cluster is non-repairable with the exception of the instrument cluster lens. The instrument cluster utilizes hardwired circuitry, the standard corporate protocol (SCP), and universal asynchronous receiver transmitter (UART) based protocol (UBP) communication networks. Communication using the SCP network transmits and receives data between the instrument cluster the PCM, electronic automatic temperature control (EATC), and the anti-lock brake system/traction control/integrated vehicle dynamics (ABS/TC/IVD) module. Communication using the UBP network utilizes data transmitted and received by the instrument cluster and the 4x4 control module, parking aid module, vehicle security module, and the driver seat module. For additional information regarding the SCP and UBP communication networks, refer to MODULE COMMUNICATIONS NETWORK .