Conditions For Setting DTC
WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
DTC sets when ignition positive voltage (IGN1) is within normal operating range and restraints identification and/or VIN information stored in SDM and IPC do not match.