The instrument panel cluster (IPC) indicators illuminate by one of the following methods:

The driver information center (DIC) may display messages when some indicators illuminate. Several different conditions may illuminate some IPC indicators.

The IPC illuminates the ABS indicator whenever the antilock brake systems changes status and during the bulb check. The indicator operates via class 2 serial data or by a discrete input from the electronic brake control module (EBCM). The class 2 input is the primary method of determining the indicator status. If a class 2 condition occurs and there is fault in the antilock brake system, the discrete input opens and illuminates the indicator. When the fault is no longer present, the discrete input closes and commands the indicator OFF. If a system condition commands the ABS indicator ON, and the vehicle has traction control, the IPC also displays the TRACTION OFF indicator.

The IPC illuminates the AIR BAG indicator whenever the inflatable restraint sensing and diagnostic module (SDM) sends a class 2 message requesting illumination, via the class 2 serial data line. The IPC flashes the indicator 7 times during the bulb check. The IPC illuminates the indicator until the IPC receives a deactivate class 2 message from the SDM. The IPC illuminates the AIR BAG indicator whenever the IPC detects a loss of communications with the SDM.

The IPC illuminates the BRAKE indicator whenever the EBCM sends a class 2 message requesting illumination, via the class 2 serial data line. As a backup, a discrete input from the EBCM also illuminates the indicator. The illumination of the indicator occurs because of one or more of the following reasons:

The IPC illuminates the CRUISE indicator whenever the PCM sends a class 2 message requesting illumination, via the class 2 serial data line. The IPC also illuminates the indicator during the bulb check.

The IPC illuminates the temperature indicator whenever the PCM sends a class 2 message requesting illumination. The class  2 message for the indicator is the same as that for the temperature gauge. The IPC determines when illumination of the indicator occurs based on the temperature value received from the PCM.

The IPC illuminates the engine oil pressure indicator whenever the PCM sends a class 2 message requesting illumination, via the class 2 serial data line. The IPC also illuminates the indicator during the bulb check.

The IPC illuminates the fasten safety belt indicator whenever the body control module (SBM) requests it on. The IPC also illuminates the indicator during the bulb check.

The high beam indicator is illuminated whenever the high beams are active. The IPC sends a class  2 message to the body control module (SBM) when the high beam indicator is active. The IPC also illuminates the indicator during the bulb check.

The IPC illuminates the left turn indicator when the IPC detects a high (voltage) input condition. The indicator turns OFF within 150 milliseconds after the cluster detects the high input is low. If the cluster determines that the turn signal remains ON for more than 1.29 km (0.8 mile), the IPC sends a class  2 message requesting the chime to sound. The signal source comes from the exterior lighting system via a discrete input.

The IPC illuminates the low fuel indicator when the fuel level in the gas tank drops below three gallons. The IPC determines a low fuel condition, via a discrete input from the fuel level sender. The IPC also illuminates the indicator during bulb check.

The IPC illuminates the right turn indicator when the IPC detects a high (voltage) input condition. The indicator turns OFF within 150 milliseconds after the cluster detects the high input is low. If the cluster determines that the turn signal remains ON for more than 1.29 km (0.8 mile), the IPC sends a class  2 message requesting the chime to sound. The signal source comes from the exterior lighting system via a discrete input.

The security indicator is controlled, via a discrete input by the remote function actuator (RFA). The indicator has a connection to battery voltage for use when the ignition key is OFF. The IPC requests a chime for the indicator if the power mode is RUN and the vehicle is not in PARK. The IPC also illuminates the indicator during the bulb check.

The SERVICE ENGINE SOON indicator identifies the ready status of the engine's emission system. The PCM activates the indicator with a low side drive circuit. The indicator turns on when the PCM detects an emissions related failure. The IPC illuminates the indicator the during bulb check.

The IPC illuminates the service vehicle soon indicator whenever the PCM sends a class  2 message requesting

The IPC is equipped with two speedometer scale indicators which identify the current display mode of the instrument cluster. One display mode is English (MPH) and the other is metric (km/h). The display mode is changed by pushing the English/metric switch. Only one scale indicator should be illuminated at any time except during bulb check.

The IPC illuminates the TRAC OFF indicator whenever the following conditions are met:

The IPC illuminates the VOLT indicator whenever the powertrain control module (PCM) sends a class 2 message requesting illumination, via the class 2 serial data line. The indicator identifies a low charging condition in the electrical system. The IPC also illuminates the indicator during the bulb check.