Actron 9640 user manual Cts, Cvrtd, Deps, Di/Dis, Dpfe, Dtc, Ebcm, Ebtcm, Ecm, Ect, Eeprom, Efe

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Glossary

CTS:

Coolant Temperature Sensor. A resistance sensor that sends a voltage signal to the PCM indicating the temperature of the coolant. This signal tells the PCM whether the engine is “cold” or “warm”.

CVRTD:

Continuous Variable Real Time Damping

D/R:

Drive/Reverse

Data Link Connector (DLC):

Connector providing access and/or control of the vehicle information, operating conditions, and diagnostic information. Vehicles with OBD II use a 16-pin connector located in the passenger compartment.

Data Stream:

The actual data communications sent from the vehicle’s PCM to the data connector.

DEPS:

Digital Engine Position Sensor.

Detonation:

See Knock.

DI/DIS:

Direct Ignition/Distributorless Ignition System. A system that produces the ignition spark without the use of a distributor.

DPFE:

Differential Pressure Feedback – Exhaust Gas Recirculation Sensor

DTC:

Diagnostic Trouble Code. An alphanumeric identifier for a fault condition identified by the On Board Diagnostic System.

Duty Cycle:

A term applied to signals that switch between “on” and “off”. Duty cycle is the percentage of time the signal is “on”. For example, if the signal is “on” only one fourth of the time, then the duty cycle is 25%. The PCM uses duty cycle type signals to maintain precise control of an actuator.

EBCM:
Electronic Brake Control Module
EBTCM:
Electronic Brake/Traction Control Module
ECM
Engine Control Module or Electronic Control Module
ECT:
Engine Coolant Temperature sensor. See CTS.	B
EEPROM:
Electrically Erasable Programmable Read Only Memory
EFE:
Early Fuel Evaporation

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