Vision V6-3.5L VIN F (1997)
Engine Control Module: Description and Operation
Speed Control System
SYSTEM OPERATION
The speed control electronic control circuitry is integrated into the Powertrain Control Module (PCM). The PCM is located in the engine
compartment. The PCM speed control functions are monitored by the On-Board Diagnostics (OBD). All OBD-sensed systems are monitored by
the PCM. Each monitored circuit is assigned a Diagnostic Trouble Code (DTC). The PCM will store a DTC in electronic memory for any failure
it detects. See Starting and Charging/Charging System/Testing and Inspection/Procedures/On-Board Diagnostic Tests. The PCM cannot be
repaired and must be replaced if faulty.