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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System With Traction Control System - BOSCH 5.3 >> Diagnostic Tests >> DTC C0161: Abs/TCS Brake Switch Circuit Malfunction >> Diagnosis

DTC C0161: Abs/TCS Brake Switch Circuit Malfunction: Diagnosis

  1. Perform DIAGNOSTIC SYSTEM CHECK  under DIAGNOSIS & TESTING. Go to next step.
  2. Press brake pedal. Using scan tool, observe BRAKE SWITCH STATUS parameter in ABS data list. If BRAKE SWITCH STATUS parameter displays APPLIED, go to step  4 . If BRAKE SWITCH STATUS parameter does not display APPLIED, go to next step.
  3. Check signal circuit (Light Blue wire for Camaro and Firebird, or White wire for Grand Prix and Intrigue) of stoplight switch for open. If problem was found, repair as necessary. After repairs, go to step  15 . If problem was not found, go to step  11 .
  4. Press brake pedal. If all stoplights are off, go to next step. If all stoplights are not off, go to step  7 .
  5. Check feed circuit (Orange wire) of stoplights for open or high resistance. If problem was found, repair as necessary. After repairs, go to step  15 . If problem was not found, go to next step.
  6. Check ground circuit (Black wire) of stoplights for open or high resistance If problem was found, repair as necessary. After repairs, go to step  15 . If problem was not found, see DIAGNOSTIC AIDS  .
  7. Press brake pedal. Using scan tool, observe BRAKE SWITCH STATUS parameter. If BRAKE SWITCH STATUS parameter changes state, see DIAGNOSTIC AIDS  . If BRAKE SWITCH STATUS parameter does not change state, go to next step.
  8. Turn ignition off. Inspect stoplight switch and adjust and/or calibrate if needed. See STOPLIGHT SWITCH  under ADJUSTMENTS. If problem was found, repair as necessary. After repairs, go to step  15 . If problem was not found, go to next step.
  9. Turn ignition off. Disconnect stoplight switch connector. Turn ignition on, engine off. Using scan tool, observe BRAKE SWITCH STATUS parameter. If scan tool displays RELEASED, go to step  11 . If scan tool does not display RELEASED, go to next step.
  10. Check stoplight signal circuit (Light Blue wire for Camaro and Firebird, or White wire for Grand Prix and Intrigue) for short to voltage. If problem was found, repair as necessary. After repairs, go to step  15 . If problem was not found, go to step  12 .
  11. Check stoplight switch connector for poor connections. If problem was found, repair as necessary. After repairs, go to step  15 . If problem was not found, go to step  13 .
  12. Check EBCM connector for poor connections. If problem was found, repair as necessary. After repairs, go to step  15 . If problem was not found, go to step  14 .
  13. Replace stoplight switch. See STOPLIGHT SWITCH  under REMOVAL & INSTALLATION. After repairs, go to step  15 .
  14. Replace EBCM. See ELECTRONIC BRAKE CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to next step.
  15. Using scan tool, clear DTCs. Operate vehicle. If DTC does not reset, system is okay.
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