L200 L4-2.2L VIN F (2002)
Odometer: Description and Operation
The odometer is an electronic digital display. Digits displayed are illuminated by the odometer backlight bulb. The odometer backlight bulb brightness is
controlled by class 2 messages from the BCM to adjust the display for daylight and instrument panel dimming operation. The trip odometer and total
odometer will show in this display area. The push button in the lower right side of the speedometer is used to toggle between the trip and total odometer
readings. To reset the trip odometer, push and hold the button down for at least two seconds. The total odometer display has six digits with no decimal
display. The trip odometer has four digits including a decimal point and indicates tenths of a mile or kilometer.
The Body Control Module (BCM) stores the vehicle mileage. If the BCM fails, the cluster will display the last valid mileage that was sent before the
BCM failed. For replacement of the BCM refer to the BCM. Replacement instrument clusters do not require odometer pre-setting before installation. If
the instrument cluster is replaced, the mileage stored in the BCM will be sent to the new cluster via serial data, and shown in the odometer display.
The OSS produces a maximum of 5000 readable pulses/mile between 5 and 161 km/h (3-120 mph), which are sent to the PCM to determine vehicle
speed. The vehicle speed input is used to determine the miles the vehicle has traveled. The PCM reads the OSS signal and sends vehicle speed
information to the BCM over the Class II link. The BCM in turn calculates the distance traveled and sends the information to the I/P cluster over the link.
The I/P cluster increments the electronic odometer accordingly.
