LAUNCH 629 User's Manual
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7. On-board monitor test
This function can be utilized to read the results of on-board diagnostic
monitoring tests for specic components/systems.
8. EVAP System Test
The EVAP test function lets you initiate a leak test for the vehicle’s EVAP
system. This tool does not perform the leak test, but signals to vehicle’s on-
board computer to initiate the test. The vehicle manufacturer determines the
criteria and method for stopping the test once it has been started. Before
using the system test function, refer to the vehicle’s service repair manual to
determine the procedures necessary to stop the test.
9. Vehicle Info
Select [Vehicle Info] from the Diagnostic Menu and press [OK], the tool will
retrieve a list of information (provided by the vehicle manufacturer) from the
vehicle’s on-board computer. This information may include:
• VIN (Vehicle identication Number). It is applicable to model year 2000 and
newer OBD II-compliant vehicles.
• CID (Calibration ID). These IDs uniquely identify the software version(s) for
the vehicle’s control module(s).
• CVN (Calibration Verification Number). CVNs are used to determine if
emission-related calibrations for the vehicle under test have been changed.
One or more CVNs may be returned by the vehicle’s computer.
5.2 System Diagnosing
This function is specially designed to diagnose the following electronic control
systems of single vehicle model:
• ABS (Anti-lock Brake System)
• SRS (Supplemental Restraint System)
Notes:
• Before diagnosing, please make sure the diagnosc program corresponding to
certain vehicle model has been installed on the tool.
• For vehicles manufactured by different vendors, it is possible that it has
different diagnostic menus. For details, please follow the instructions on the
screen to proceed.
Refer to the owchart illustrated as below to diagnose a vehicle:
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