Introduction; General Information-About Obdii/Eobd; O N -Board Diagnostics (Obd) Ii - Launch Creader V+ User Manual

LAUNCH Creader V+ User's Manual

1. INTRODUCTION

Creader V+ is the next generation of vehicle fault diagnosis tool developed by
Launch, especially for the DIY users and the servicemen of small service
workshop. It supports read/clear DTCs and read datastream. With built-in help
menus and code definitions, diagnosing and repairing that dreaded Check
Engine Light is now easier than ever!
Moreover, Creader V+ 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: Creader V+ may automatically reset while being disturbed by strong
static electricity. THIS IS A NORMAL REACTION.

2. General Information-About OBDII/EOBD

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 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