Autel Autolink AL301 - Manual (Page 14)

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8. Read the Diagnostic Trouble Codes by pressing the SCROLL
button.
 The first code number will appear on the first line of the LCD
display, the numerical sequence of the code and the total
number of the codes stored will appear on the second line. To
view additional codes, press the SCROLL button to scroll, as
necessary, until all the codes have been shown up.
 If the code retrieved is a pending code, a ―PD‖ will show on the
LCD display in the end.
 To view previous codes, press the SCROLL button to scroll
through to the end, and then start from the first of the list.
9. Look up part 5 for Diagnostic Trouble Code Definitions. Match
the retrieved DTC(S) with those listed and read the definitions.
4.2 Erasing Codes
CAUTION: Erasing the Diagnostic Trouble Codes allows the Scan
Tool to delete not only the codes from the vehicle’s on-board
computer, but also “Freeze Frame” data and manufacturer
specific enhanced data. Further, the I/M Readiness Monitor Status
for all vehicle Monitors is reset to Not Ready or Not Complete
status. Do not erase the codes before the system has been checked
completely by a technician.