Autel Autolink AL319 - Manual (Page 46)

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“N/A” -- The monitor is not supported on the vehicle.
The LED and audio tone indications are interpreted as below:
LED Interpretation
The green and red LEDs provide an easy way to check if
emission-related monitoring systems complete their self-diagnostic
testing.
1) GREEN LED – Your vehicle is Ready. Indicates that engine
systems are “OK” and operating normally (the number of
Monitors supported by the vehicle which have run and
performed their self-diagnostic testing is in the allowed limit).
2) RED LED –Your vehicle is Not Ready. Indicates that the
number of Monitors supported by the vehicle which have run
and performed their self-diagnostic testing is out of the allowed
limit.
Audio Tone Interpretation
The audio tone could be configured according to the I/M Readiness
Status. This function is invaluable when performing diagnostics and
driving at the same time, or working in bright areas where LED
illumination alone is not sufficient.
LED Light Audio Tone Beep Interval
Green LED Two long beeps 2 minutes
Red LED No beep