Circuit/System Description

The instrument panel cluster (IPC) calculates the mileage based on the vehicle speed signal circuit from the powertrain control module (PCM). The PCM sends a class 2 serial data message to the IPC indicating the value of the odometer. The odometer will display 'error' if an internal IPC memory failure is detected or there is a class 2 communication fault. The odometer displays either miles or kilometers and the desired units can be accessed by pressing the trip/reset switch.