Certain instrument panel cluster (IPC) features are tested when the ignition is turned on in order to verify the features are working properly. The following indicators illuminate briefly at key up unless otherwise noted:

IPC Indicators

Systems Monitor Indicators

Refer to Indicator/Warning Message Description and Operation for the description and operation of the IPC, systems monitor, driver information center (DIC), and head up display (HUD) indicators.

The IPC displays the difference between the engine intake pressure and the atmospheric pressure as determined by the PCM. The PCM monitors the manifold absolute pressure (MAP) sensor and sends a class 2 message to the IPC indicating the pressure. The boost gage defaults to 0 psi (0 kPa) if:

The IPC displays the engine coolant temperature as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine coolant temperature. The engine coolant temperature gage defaults to 40°C (100°F) or below if the IPC detects a loss of class 2 communications with the PCM.

The IPC displays the engine oil pressure as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine oil pressure. The engine oil pressure gage defaults to 0 kPa (0 psi) or below if:

The IPC displays the fuel level as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel gage defaults to empty if:

When the fuel level is less than a pre-determined value, the CHECK GAGES indicator illuminates.

The IPC contains a season odometer and a trip odometer. Press the TRIP RESET switch in order to reset the trip odometer. The IPC displays the vehicle mileage and trip mileage as determined by the IPC. The IPC calculates the mileage based on the class 2 vehicle speed message from the PCM. The odometer will display 'error' if an internal IPC memory failure is detected.

The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL display blanks if:

The IPC displays the vehicle speed based on the information from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 mph (0 km/h) if a malfunction in the vehicle speed signal circuit exists. The speedometer displays either miles or kilometers as requested by the activation of the English/metric button. The associated indicator (km/h or MPH) illuminates.

The IPC displays the engine speed based on information from the PCM. The PCM converts the engine speed data to a 2 pulses/engine revolution signal. The IPC uses the engine speed signal circuit from the PCM in order to calculate the engine speed. The tachometer defaults to 0 rpm if a malfunction in the engine speed signal circuit exists.

The IPC displays the system voltage as determined by the dash integration module (DIM). The IPC receives a class 2 message from the DIM indicating the system voltage. The IPC uses the ignition 1 voltage circuit in order to drive the volt gage.