Glossary “Diagnostic Trouble Code” Definition:
A number generated by the vehicles computer to indicate a flaiure in a sensor, circuit, or the computer itself

Glossary “Diagnostic Trouble Codes (DTC)” Definition:
Any code stored in a control module memory used to aid the technician in the diagnosis of a system.

Glossary “diagnostic tree” Definition:
Part of the service information that provides a step-by-step diagnostic procedure to follow when troubleshooting electrical related concerns.

Glossary “diagnostic test mode (DTM)” Definition:
A capacity of the OBD system. This may include different functional states to onserve signals, a base level to read DTC’s, a monitor level which includes information on signal levels, bi-directional control with testers, and the ability to interface with remote diagnostic testers.

Glossary “Diagnostic Read Out BOX” Definition:
Chryslers Scan tool now up to DBR IV

Glossary “diagnostic code” Definition:
Numbers or codes obtained from a computer either by the use of flashing “Check Engine” light, or with the use of a scantool

Glossary “diagnostic executive” Definition:
The diagnostic management system software that stores testing results and controls the illumination of the malfunction indicator lamp. It also determines when the critera has been met to run OBD-II monitors.

Glossary “diagnostic management system” Definition:
The PCM system responsible for preforming testing of the powertrain components and systems, recording testing results and preforming test fail actions.

Glossary “diagnostic mode” Definition:
This Chrysler mode of operation is used by the Logic Module to indicate malfunctions to the technician through flash codes.