Circuit/System Description

The instrument panel cluster (IPC) calculates the mileage based on the vehicle speed information from the engine control module (ECM). The ECM sends a serial data message to the IPC indicating the value of the odometer. The IPC odometer information is displayed in the driver information center (DIC) and is accessed by pressing the TRIP/FUEL switch until the odometer and trip odometer information is displayed from the menu. The odometer will display 'error' if an internal memory failure is detected. The odometer displays either miles or kilometers and the desired units can be accessed by pressing the TRIP/FUEL switch.