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Home >> Saturn >> 2000 >> LS Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0724: Brake Switch Circuit High >> Diagnostic Procedures
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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. Turn ignition on, with engine off. Using scan tool, monitor brake switch status while depressing and releasing brake pedal. If scan tool indicates the correct status (Applied/Released), problem is intermittent. See DIAGNOSTIC AIDS . If scan tool does not indicate the correct status (APPLIED/RELEASED), go to next step.
  3. Disconnect stoplight switch harness connector. Observe scan tool display. If scan tool indicates RELEASED status, readjust stoplight switch. If adjustment is okay, replace stoplight switch. If scan tool does not indicate RELEASED status, go to next step.
  4. Check for short to voltage in circuit between stoplight switch harness connector terminal No. 2 (Light Blue wire) and left instrument panel fuse block or attached components. Repair as necessary. If circuit or components are okay,
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