Circuit Description
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster (IPC) monitors the signal circuit of the internal trip odometer reset switch in order to change odometer displays and to reset the odometer value. The IPC detects a switch activation when the signal circuit is low.