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Home › Saturn › 2000 › LS2 Standard › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics › Diagnostic Tests › DTC P0500: VSS Circuit (With Abs) › Diagnostic Procedures

Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD system check, go to next step.
  2. Drive vehicle. Using scan tool, monitor vehicle speed. If vehicle speed is displayed, problem is intermittent. See DIAGNOSTIC AIDS . If vehicle speed is not displayed, go to next step.
  3. Check if DTC P0502 or P0503 is set. If any of this DTC is set, diagnose affected DTC(s). If DTC P0502 or P0503 is not set, replace ECM.
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