The instrument cluster receives information from the engine control module (ECM) and the transaxle control module (TCM) and is sent to the BCM over the CAN serial data link where it is converted to a Class 2 message and sent to the cluster. The information from the electronic brake/traction control module (EBTCM) is sent to the BCM, where it is converted into a Class 2 message and sent to the cluster.

The body control module (BCM) controls many of the functions of the instrument cluster. The cluster receives commands from the BCM which in turn receives information from other modules as well as from direct wires to components.

The sensing and diagnostic module (SDM) sends messages to the cluster, with seat belt and SIR system status.

The input information for the speedometer and tachometer is supplied by the body control module (BCM). The BCM gets the vehicle speed data and engine speed data from the engine control module (ECM) via the CAN serial data link.

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 body control module (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 2 seconds. The total odometer display has 6 digits with no decimal display. The trip odometer has 4 digits including a decimal point and indicates tenths of a mile or kilometer.

The 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 section of this service manual. 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 input information for the fuel gage is sent over the Class 2 serial data link by the body control module (BCM). The cluster will position the needle on the gage based on the fuel level information sent by the BCM.