Autel Autolink AL609 - Manual (Page 22)

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4. ABS Diagnosis
ABS -“Anti-lock Braking System” in most vehicles is made up of
an electronic hydraulic pump of two, three or most commonly four
Wheel Speed Sensors (WSS), a G-force sensor, a Vehicle Speed
Sensor and an ABS Control Module (EBCM). The EBCM is
constantly monitoring the WSS, the Vehicle Speed Sensor, and the
G-sensor.
Diagnosing an ABS problem should always start with a visual
inspection of all brake components, then you will need to retrieve
ABS DTCs to tell you where the problem is.
The ABS diagnostic function is used to retrieve and clear codes
from the vehicle’s Anti-lock Braking System. It also provides the
definition of each code to help diagnosing problem areas within
the system that may cause the Malfunction Indicator Light (MIL)
to turn on.
IMPORTANT: Autel accepts no responsibility for any accident
or injury arising from servicing the ABS system. When
interpreting DTCs retrieved from the vehicle, always follow
the manufacturer’s recommendation for repair.
NOTE: All software screens shown in this manual are
examples, actual test screens may vary for each vehicle being
tested. Observe the menu titles and onscreen instructions to
make correct option selections.
Please follow these steps to start the ABS diagnostic testing
procedure:
1) Turn the ignition off.
2) Locate the vehicle‟s 16-pin Data Link Connector (DLC).
3) Plug the scan tool cable connector into the vehicle‟s DLC.
4) Turn the ignition on but do not start the engine.