Solstice L4-2.4L (2007)
Driver/Vehicle Information Display: Description and Operation
Driver Information Center (DIC) Description and Operation
The driver information center (DIC) displays important vehicle information when it first powers up. The DIC is also used to display odometer
information when other important vehicle information is not being displayed. The odometer information is transmitted to the instrument panel cluster
(IPC) over GMLAN for display in the DIC. The body control module (BCM) is responsible for reading the season odometer information. The DIC
switches are analog switches that use the resistor ladder setup to relay the button press information. The DIC switch resistor ladder consists of 1.27 K
ohm for the INFO switch and a 715 ohm for the Reset/Select switch. A 4.22 K ohm pull-up resistor to ignition is the analog input and it is internal to the
IPC. The IPC reads the voltages and by comparison of the voltage level determines which switch is pressed. The switch input to the cluster is normally
open and is at the reference voltage.
There are 2 DIC buttons on the IPC:
*
INFO
*
RESET/SELECT
The 2 DIC buttons however provide 3 switch functions. Pressing the INFO and RESET/SELECT button at the same time provides the MENU switch
function.
INFO
The INFO button is used in order to navigate through the following driver information center (DIC) information modes:
*
AV VEHICLE SPEED
*
AV FUEL ECON
*
COOLANT TEMPERATURE
*
FUEL RANGE
*
OIL LIFE MONITOR
*
TRIP ODOMETER A
*
TRIP ODOMETER B
Other instrument panel cluster (IPC) information displayed in the DIC are Season odometer and Outside Air Temp.
AV VEHICLE SPEED
Average speed is calculated using the equation: Average Speed = Distance/Ignition On
*
Distance = The accumulated distance travelled since the last reset of this value
*
Ignition On = The accumulated ignition on time since the last reset of this value
Ignition ON time is measured from the time that the ignition is turned ON to the time when the ignition is turned OFF. The value of this mode is retained
during ignition OFF. Press and hold the RESET/SELECT button on the DIC for 1 second in order to reset the average speed display.
AV FUEL ECON
Average fuel economy is calculated using the equation: AFE = Distance/Fuel
*
Distance = The accumulated distance travelled since the last reset of this value
*
Fuel = The accumulated fuel consumption since the last reset of this value
The DIC receives a serial data message from the body control module (BCM) regarding fuel usage information. The value of this mode is retained
during ignition OFF and can be changed between English units and metric units. Press and hold the RESET/SELECT button on the DIC switch for 1
second in order to reset the ECON display.
COOLANT TEMPERATURE
The DIC receives GMLAN serial data message from the BCM requesting the display of the coolant temperature. The coolant temperature is sent to the
BCM as determined by the engine control module (ECM) via GMLAN serial data message.
FUEL RANGE
This message indicates the estimated distance that the vehicle can travel under the current fuel economy and fuel level conditions since the last reset of
the value. Fuel Range is calculated using the equation: Fuel Range = Distance Sum/Fuel Sum.
