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Home >> Saturn >> 1993 >> SW1 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Pinpoint Tests >> Code 94, Brake Switch Circuit Always Closed >> Diagnostic Aids

Diagnostic Aids

  1. Drive vehicle at speed faster than 25 MPH (40 km/h) with brake pedal released. Check for reappearance of Code 94.
  2. Suspected intermittents or opens at connectors can be detected with diagnostic service probe which permits voltage to be measured on wires without unplugging connectors. Ensure all terminals make good connection.
  3. When diagnosing intermittent problems, select MALF HISTORY from Tech 1 scan tester ABS menu. Supplemental data can be used to duplicate problem.
  4. Brake switch is normally held open by brake pedal. Pressing brake allows switch to close. Check brake switch adjustment.
Fig 1: Code 94 - Schematic
G92C05433Courtesy of GENERAL MOTORS CORP.
Fig 2: Code 94 - Diagnostic Flowchart
G92B05437Courtesy of GENERAL MOTORS CORP.
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