CCC Tests W/O Codes: Description
NOTE:
Most Computer Command Control (CCC) problems are the result of mechanical breakdowns, poor electrical connections, or damaged vacuum hoses. Before considering the CCC system as a possible cause of problems, check ignition high tension wires, fuel supply, electrical connections, and vacuum hoses. Failure to do so may result in lost diagnostic time.
The Computer Command Control (CCC) system controls engine operation and lowers exhaust emissions while maintaining good fuel economy and driveability. The CCC system is designed to maintain a 14.7:1 air/fuel ratio under all engine operating conditions. When the ideal air/fuel ratio is maintained, the catalytic converter can control oxides of nitrogen (NOx), hydrocarbon (HC), and carbon monoxide (CO) emissions.
The CCC system consists of the following sub-systems: Fuel Control, Data Sensors, Electronic Control Module (ECM), Electronic Spark Timing, Electronic Spark Control, AIR Management, Exhaust Gas Recirculation, Evaporative Emission Control, Torque Converter Clutch (TCC), Diagnostic System.