AL529 User Manual V1.00

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 Turn the ignition off and wait for about 10 seconds. Turn the ignition back
to on and continue the testing.
Scan tool doesn’t power up
If the scan tool won’t power up or operates incorrectly, do the following:
 Check if the scan tool’s OBD II connector is securely connected to the
vehicle’s DLC;
 Check if the DLC pins are bent or broken. Clean the DLC pins if
necessary.
 Check vehicle battery to make sure it is still good with at least 8.0 volts.
LED lamps not working
If the LED lamps don’t light during I/M Readiness testing, do the following:
 Make sure the OBD II cable is connected to the DLC securely.
 Verify the ignition key is in the KOER position.
 Run the LED Test in the System Setup menu. If the tool fails this test,
there is a problem with the LED lamp. Please contact Autel Tech Support
or your local tool distributor.