Instrument Cluster

The Instrument Cluster (IC) receives a permanent power supply from the startup battery via the Rear Junction Box (RJB). The High Speed (HS) Controller Area Network (CAN) powertrain systems bus and HS CAN comfort systems buses are also connected to the IC which communicates with other control modules.

The Electric Steering Column Lock (ESCL) is connected directly to the IC and supplies the ground, supply is provided by the Body Control Module/Gateway Module (BCM/GWM). The steering wheel switchpack inputs are sent to the IC via the Local Interconnect Network (LIN) input. Other vehicle sensors are connected to the BCM/GWM which processes the signals from the sensors and passes them to the IC on the HS CAN powertrain bus. The Ambient Air Temperature (AAT) signal is received by the Powertrain Control Module (PCM) which processes the signal and passes the information to the HVAC Control Module unit which sends the signal to the IC.