Instrument Cluster (IC)

Instrument Cluster (IC)

NOTE: Edge base Instrument Cluster (IC) shown, MKX and message center IC similar.










The IC is available with either a integrated display (base IC) or with a message center display (message center IC). The integrated display and the message center display are 2-line displays. Both the base IC and the message center IC contain gauges, informational indicators, and warning indicators that are designed to provide the driver with a system status and to alert the driver that certain conditions exist in the vehicle.

The IC uses both hardwired and messaged inputs to control the gauge and indicator outputs. Other systems that use IC inputs are the PATS and traction control.

Network Messaged Inputs

Module messaging has increased dramatically over time and is becoming the standard for sending and receiving information required to operate the IC. The IC is a gateway module. As a gateway module, the 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 IC gauge or indicator outputs.

For complete list of all module messages along with the message origination sources, refer to Information Bus.

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

- Vehicle speed
- Engine rpm
- Engine Coolant Temperature (ECT)
- 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)

Hardwired Inputs

The IC requires hardwired inputs from components that are not hardwired to other modules and, therefore, are not on either the HS-CAN or the MS-CAN but are required for specific IC functions or gateway requirements. The hardwired inputs are provided by the following components:

- Fuel pump module
- Remote fuel sender (all wheel drive only)
- Passive Anti-Theft System (PATS) transceiver
- Traction control switch
- Washer fluid level switch
- Engine oil pressure switch
- Compass module
- Message center switch

Gauges

Gauges provide information to the driver indicating the status of systems. The available gauges are:

- Engine temperature
- Engine rpm (tachometer)
- Fuel
- Vehicle speed (speedometer)

Informational Indicators

Informational indicators provide information to the driver of conditions that exist in the vehicle. The systems that use informational indicators are:

- Anti-theft
- Check fuel cap
- High beam
- Low fuel
- Low washer fluid
- O/D off
- RH/LH turn
- Speed control

Warning Indicators

Warning indicator lamps provide information to the driver of conditions that could potentially cause personal injury or alter vehicle performance.

- Air bag
- ABS
- Brake
- Charging system
- Door ajar
- Low oil pressure
- Malfunction Indicator Lamp (MIL)
- Safety belt
- TPMS
- Traction control
- Powertrain malfunction (wrench)