Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit/System Description
The body control module (BCM) calculates the mileage based on the vehicle speed signal circuit from the powertrain control module (PCM)/engine control module (ECM). 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 display is also used as a text message display to display driver information, oil life and language.
Reference Information
Schematic Reference
Connector End View Reference
Displays and Gages Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
Ignition ON, scan tool installed, press the trip reset button and verify that the odometer display toggles between the trip odometer and other vehicle information. With the scan tool, verify that the Trip Odometer Reset Switch parameter toggles between Pressed and Released when the trip reset button is pressed.
| ⇒ | If not, replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for IPC replacement, setup, and programming
