c

CIS-E

Glossary “CIS-E” Definition:
Continuous Injection System – Electronic.

CKP

Glossary “CKP” Definition:
Crankshaft Position Sensor.

CKPO

Glossary “CKPO” Definition:
Buffered Crankshaft speed / position sensor output signal from the PCM to the FICM.

C/L

Glossary “C/L” Definition:
Closed Loop

circuit breaker

Glossary “circuit breaker” Definition:
Electrical switch-like protective device that automatically opens to interrupt the circuit if current exceeds its rated limit. Some types automatically reset, while others may require a manual reset.

circuit resistance test

Glossary “circuit resistance test” Definition:
Tests that check the resistance in the ground and insulted circuit by measuring voltage drop.

circuit protection

Glossary “circuit protection” Definition:
Circuit that uses fuses, breakers, or fusible links to protect it from excessive current flow.

circular sander

Glossary “circular sander” Definition:
Spins its pad and sandpaper around in a circular motion.

chuckle

Glossary “chuckle” Definition:
Low pitch noise that normally occurs while decelerating to a stop, pitch goes down as vehicle slows. When very loud, often described as a knock.