On-Board Diagnostics Test For Speed Control System

The Powertrain Control Module (PCM) monitors critical input and output circuits of the speed control system, making sure they are operational. A Diagnostic Trouble Code (DTC) is assigned to each input and output circuit monitored by the On-Board Diagnostic (OBD) system. Some circuits are checked continuously and some are checked only under certain conditions.

For DTC information, refer to Powertrain Management/Diagnostic Trouble Codes in Emission Control System. This will include a complete list of DTC's including DTC's for the speed control system.