GM Corvette 1963-1982 Repair Guide

Computer Command Control (CCC) System

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OPERATION



See Figures 1 through 5

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Fig. Fig. 1: Computer Command Control (CCC) system schematic



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Fig. Fig. 2: Exploded view of the electronic emission control components (part 1 of 2)-1981 vehicles



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Fig. Fig. 3: Component list for the electronic emission control components (part 2 of 2)-1981 vehicles



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Fig. Fig. 4: Computer Command Control system component locations-1982 vehicle, left side view shown



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Fig. Fig. 5: Computer Command Control system component locations-1982 vehicle, right side view shown

The CCC system is used on all 1981-82 models. Basically, the CCC system is an improved version of the C-4 system. The capabilities of the CCC system are greatly extended (compared to the C-4 system) through the use of additional sensors and increased control capacities of the ECM and PROM units.

In addition to the functions of the C-4 system, the CCC system also controls the AIR, EGR, Electronic Spark Timing (EST) and Torque Converter Clutch (TCC) systems. On 1982 models, the fresh air induction and fuel injection systems are also controlled by the CCC.

Due to the complexity of either computer emission system and increasing federal emission regulations, service, testing, or repair of the system should be performed only by a qualified, professional technician.

 
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