Circuit Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster (IPC) receives vehicle speed information from the powertrain control module (PCM). The IPC receives a 4000 pulse-per mile vehicle speed sensor (VSS) input over a dedicated input from the PCM. The PCM is responsible for processing the VSS data and sending it to the IPC. The IPC monitors the VSS output information sent from the PCM for an out of range condition.