• | 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. |
The instrument panel cluster (IPC) displays the vehicle speed based on the information from the engine control module (ECM). The ECM sends the vehicle speed information via the serial data circuit to the body control module (BCM). The BCM then sends the information via the serial data circuit to the IPC in order to display the vehicle speed and accumulated miles traveled.
Check for the following DTCs:
Instrument Cluster Description and Operation
Control Module References for scan tool information
⇒ | If the speedometer gage does not sweep from its low to high position, replace the IPC. |
⇒ | If the Vehicle Speed Sensor parameter does not match the speedometer display, replace the IPC. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for IPC replacement, setup, and programming