User's Manual

Table Of Contents
34
LAUNCH Professional 919X User Manual
and then the record starting time and ends with .x431 (To di󰀨erentiate between
les, please congure the accurate system time). All diagnostic records can be
viewed by tapping Report -> Diagnostic Record.
4.3 Perform OBD II Diagnosis
This option presents a quick way to check for DTCs, isolate the cause of the
illuminated Malfunction Indicator Lamp (MIL), check monitor status prior to
emissions certication testing, verify repairs, and perform a number of other
services that are emission-related.
After the tool is properly connected to the vehicle’s DLC, tap “OBD II” in the
Job Menu. The tool will automatically start a check of the vehicle’s computer
to determine which type of communication protocol it is using. When the tool
identifies the computer’s communication protocol, a communication link is
established and then the screen will display the Monitor Status.