Testing Sequence
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When trouble shooting ABS system, use test procedures in order they are presented. Using other than recommended procedure could result in wasted time and/or unnecessary replacement of parts. Recommended sequence for diagnosing system is as follows: PRETEST CHECKS, ON-BOARD SELF-TESTS using ON-BOARD SELF-TEST DIAGNOSTIC TROUBLE CODE (DTC) INDEX table, ABS QUICK CHECK CHART (see Figure ), WARNING LIGHT SYMPTOM SEQUENCE CHART (see Figure ) and PINPOINT TESTS.