Equus 3120 - OBD 2&1 Tool Kit Manual do Utilizador descarregar pdf (Página 85)

OBD2 & 1 83

Glossary

GLOSSARY OF TERMS AND ABBREVIATIONS

OBD 2 – On-Board Diagnostics Version 2 (also referred to as “OBD II”)

On-Board Computer – The central processing unit in the vehicle’s

computer control system.

PCM – Powertrain Control Module

Pending Code – A code recorded on the “first trip” for a “two-trip”

code. If the fault that caused the code to be set is not detected on the

second trip, the code is automatically erased.

PID – Parameter Identification

STFT – Short Term Fuel Trim, is a program in the vehicle’s computer

designed to add or subtract fuel from the vehicle to compensate for

operating conditions that vary from the ideal A/F ratio.The vehicle uses

this program to make minor fuel adjustments (fine tune) on a short-

term basis.

Trip Drive Cycle – Vehicle operation that provides the necessary driv-

ing condition to enable a vehicle Monitor to run and complete its diag-

nostic testing.

VECI – Vehicle Emission Control Information Decal

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Equus 3120 - OBD 2&1 Tool Kit Manual do Utilizador Página 85