Scan Tool Testing and Procedures

The symptom chart (in addition to providing diagnosis by symptoms) will also cross reference the Diagnostic Trouble Codes (DTC) to the appropriate pinpoint test.

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There are times when a concern will not cause the yellow ABS warning indicator to illuminate or a code to be stored.

The symptom chart gives the technician a starting point in resolving these types of concerns. The chart also describes conditions that will illuminate the yellow ABS warning indicator.

Please note that both the red BRAKE warning indicator self-check and test drive are required prior to performing the tests in this section. Failure to perform these procedures will greatly diminish the effectiveness of the diagnosis.