Diagnostic Fault Information
Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit/System Description
The body control module (BCM) calculates the mileage based on the vehicle speed signal circuit from the engine control module (ECM) or powertrain comtrol module (PCM). The BCM then sends a serial data message to the instrument panel cluster (IPC) indicating the value of the odometer. The odometer will display 'error' if an internal BCM memory failure is detected. The odometer displays either miles or kilometers and the desired units can be accessed by pressing the trip/reset switch.
Reference Information
Schematic Reference
Connector End View Reference
Instrument Panel, Gages, and Console Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Turn ON the ignition, with the engine OFF
- Press the trip reset button
| ⇒ | If the odometer display does not switch between trip and odometer, replace the instrument panel cluster. |
Repair Instructions
Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for IPC replacement, setup, and programming.
