Diagnostic Tool, CCCI Sensor Check, 1984-87

Troubleshoot no spark scenarios

Diagnoses 98% of CAM and CRANK sensor issues

The Computer Controlled Coil Ignition (CCCI) is probably the least-understood system on your turbo Buick powered vehicle. The most common problem with these ignition systems is the “no-start” condition. This simple plug-and-play diagnostic tool is designed to troubleshoot your ignition system for the most common “no-start” scenario. Specifically, it will display a simple L.E.D. to indicate the status of the cam sensor, crank sensor, coil power and module power. The cam L.E.D. will visibly blink rapidly during idle, and the crank L.E.D. will appear to be continuously on (due to the rapid crank signal) when the vehicle is running normally. The power L.E.D. will be illuminated when the module fuse is working. There are three L.E.D.’s assigned to each model: “Hot Air” (84-85) or “Intercooled” (86-87). Their functions are indicated beside each L.E.D. The power L.E.D.for intercooled cars shows the status of the ECM/IGN fuse and for hot air cars, the CCCI fuse.