Network Messaged Inputs

Module messaging has increased dramatically over time and is becoming the standard for sending and receiving information required to operate the instrument cluster (IC). The instrument cluster (IC) is a gateway module. As a gateway module, the instrument cluster (IC) receives and sends information to other modules over both the high speed controller area network (HS-CAN) and the medium speed controller area network (MS-CAN) that may not necessarily be used for instrument cluster (IC) gauge or indicator outputs.

For complete list of all module messages along with the message origination sources, refer to MODULE COMMUNICATIONS NETWORK article.

Some of the system status and information messages that the instrument cluster (IC) requires from other modules to operate the gauges and indicators are as follows:

• Vehicle speed
• Engine RPM
• Engine coolant temperature
• ABS
• Traction control status
• All wheel drive (AWD)
• Transmission range status
• Overdrive (O/D) status
• Tire pressure monitoring system (TPMS)
• Supplemental restraint system (SRS)
• Brake fluid level
• Parking brake status
• Electronic throttle control (ETC)