Testing Sequence

CAUTION: When battery is disconnected and reconnected, abnormal drive symptoms may occur while Powertrain Control Module (PCM) relearns its adaptive strategy. Vehicle may need to be driven more than 10 miles to relearn strategy.

When trouble shooting ABS system, use test procedures in the 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:

SYSTEM PRECHECKS .
ABS QUICK CHECK CHART. See Figure .
DRIVE TEST. See Figure & 3.
INTERMITTENT DIAGNOSIS PROCEDURE. See Figure .
PINPOINT TESTS using TROUBLE CODE DIRECTORY table.
SYMPTOM TESTS using SYMPTOM DIAGNOSTIC CHART. See Figure .