Introduction; General Information; On-Board Diagnostics (Obd) Ii - LAUNCH TECH CRP12X Premium Series User Manual

LAUNCH
CRP12X Premium Series User's Manual

1. Introduction

The CRP12X Premium Series are specially developed by LAUNCH, which
supports all 10 modes of OBD II test for a complete diagnosis. Featuring the
3.5" TFT color display, it enables users to read/clear DTCs, record, save and
playback data in live graphic display. The CRP12X Premium Series are also EN
very easy to use. With built-in help menus and code definitions, diagnosing and
repairing that dreaded Check Engine Light is now easier than ever!
Moreover, CRP12X Premium Series also feature the following bi-directional
"special tests": EVAP, O2 Sensor, I/M Readiness, MIL Status, VIN Info, and On-
board monitors testing.
It can be connected to PC through the USB cable for upgrade to keep updated
with the latest software version.
Notice: CRP12X Premium Series 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 (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 OBD II system is designed to monitor emission control systems and key
engine components by performing either continuous or 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';
2) Which, if any, Diagnostic Trouble Codes (DTCs) are stored;
3) Readiness Monitor status.
1