Circuit Description
WARNING: This page is about a different car, the 2001 Pontiac Grand Prix, 2001 Pontiac Firebird, 2001 Oldsmobile Intrigue, and 2001 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Throttle position signal is used by Accelerator and Servo control Module (ASM) to control actual throttle position requested by EBCM. EBCM compares delivered throttle position sensor value that is sent from ASM to throttle position sensor value sent from PCM over Class 2 serial data line.
DTC sets when EBCM detects a difference between PCM throttle position and throttle position sent from ASM.