Computer Command Control (CCC)

CCC is an electronically controlled exhaust emission system. It monitors several engine/vehicle functions and controls various operations, including automatic transmission torque converter clutch (TCC), downshift control and manual transmission shift light. CCC system aids in control of exhaust emissions while maintaining good fuel economy and driveability.

Electronic Control Module (ECM) is the "brain" of the CCC system. ECM controls engine systems to maintain good vehicle performance under all normal driving conditions.

Primary objective of the system is to maintain an ideal air/fuel ratio of 14.7:1. With this ratio maintained, the catalytic converter can effectively control nitrogen oxides (NOx), hydrocarbons (HC) and carbon monoxide (CO). For additional information, see appropriate article in the COMPUTERIZED ENGINE CONTROLS section.