Commander 2WD V8-5.7L (2008)
Odometer: Description and Operation
Odometer
Description
DESCRIPTION
An odometer is standard factory-installed equipment on this vehicle. The odometer is located within the fixed segment, blue-green Organic Light
Emitting Diode (OLED) display unit. The odometer information is displayed in the lower area of the OLED display. The fixed segment OLED display
unit is soldered onto the cluster electronic circuit board, and is visible through a window with a smoked clear lens located on the lower edge of the
speedometer gauge dial face of the cluster overlay. The dark lens over the OLED prevents it from being clearly visible when it is not illuminated.
The odometer information is stored in the instrument cluster memory. This information can be increased when the proper inputs are provided to the
instrument cluster, but the information cannot be decreased. The odometer can display values up to 999,999 kilometers (999,999 miles). The odometer
latches at these values, and will not roll over to zero.
The odometer display does not show leading zeroes, does not have a decimal point and will not show values less than a full unit (kilometer or mile). The
unit of measure (km or miles ) for the odometer display is shown in the fixed segment OLED in the same white color and at the same lighting level as
the odometer values. The unit of measure for the odometer can be selected using the customer programmable features function of the Electronic Vehicle
Information Center (EVIC). The odometer has a RENTAL CAR mode, which will illuminate the odometer information in the OLED whenever either
front door is opened with the ignition switch in the OFF or ACCESSORY positions.
During daylight hours (exterior lamps are OFF) the fixed segment OLED is illuminated at full brightness for clear visibility. At night (exterior lamps are
ON), the OLED lighting level is adjusted with the other cluster general illumination lamps using the panel lamps dimmer function of the interior lighting
control sleeve on the left multi-function switch control stalk. However, a PARADE mode position of the control sleeve allows the OLED to be
illuminated at full brightness if the exterior lamps are turned ON during daylight hours.
The odometer is serviced as a unit with the fixed segment OLED display unit in the instrument cluster.
Operation
OPERATION
The odometer gives an indication to the vehicle operator of the distance the vehicle has traveled. This indicator is controlled by the instrument cluster
circuitry based upon cluster programming and electronic messages received by the cluster from the Powertrain Control Module (PCM) over the
Controller Area Network (CAN) data bus.
The odometer information is displayed by the instrument cluster fixed segment Organic Light Emitting Diode (OLED) display. The OLED will display
the odometer information whenever either front door is opened with the ignition switch in the OFF or ACCESSORY positions. The instrument cluster
circuitry controls the OLED and provides the following features:
-
Communication Error - If the cluster fails to receive an electronic distance message during normal operation, it will hold and display the last
data received until the ignition switch is turned to the OFF position. If the cluster does not receive a distance message within one second after the
