Heavy Duty & OBDII Diagnostic Tool HD V3.0
1
EN
1 Introduction
The HD V3.0 is specially developed by iCarsoft for heavy duty vehicles,
which support all 10 modes of OBDII test (EVAP, 02 Sensor, I/M Readiness,
MIL Status, VIN info, and On
– board monitors testing etc.) for a complete
diagnosis and enables users to read DTCs, clear DTCs and view the
datastream with a live color graphing. It covers a wide range of vehicles since
it offers multiple data bus protocols, such as J1587 and J1939. It can be
connected to PC through the USB cable or upgrade to keep updated with the
latest software version.
Notice: HD V3.0 may automatically reset while being disturbed by strong
static electricity. THIS IS A NORMAL REACTION.
2 General Information
2.1
On-Board Diagnostics (OBD) II
The first generation of On-Board Diagnostics (called OBD I) was
developed by the California Air Resources Board (ARB) and implemented in
1988 to monitor some of the emission control components on vehicles. As
technology evolved and the desire to improve the On-Board Diagnostic
system increased, a new generation of On-Board Diagnostic system was
developed. This second generation of On-Board Diagnostic regulations is
called
“OBD II”.
The ODB II system is designed to monitor emission control systems and
key engine components by performing either continuous of periodic tests of
specific components and vehicle conditions. When a problem is detected, the
OBD II system turns on a warning lamp (MIL) on the vehicle instrument panel
to alert the driver typically by the phrase of
“Check Engine” or “Service
Engine Soon
”. The system will also store important information about the
detected malfunction so that a technician can accurately find and fix the
problem. Here below follow three pieces of such valuable information:
1. Whether the Malfunction Indicator Light (MIL) is commanded
„on‟ or
„off‟;
