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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0571: Cruise Control Brake Switch Circuit ("Y" Body) >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
  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. Start engine. Using scan tool, monitor cruise control brake switch status. Depress brake pedal about a quarter-way. If scan tool indicates APPLIED, see DIAGNOSTIC AIDS . If scan tool does not indicate APPLIED, go to next step.
  3. Check cruise control brake switch adjustment. Adjust as necessary. After adjusting brake switch, go to step  9. If adjustment is not necessary, go to next step.
  4. Turn ignition off. Disconnect cruise control brake switch connector. Turn ignition on. Using scan tool, monitor cruise control brake switch status. If scan tool indicates RELEASED, go to next step. If scan tool does not indicate RELEASED, go to step  7.
  5. Turn ignition off. Disconnect PCM harness connector. Turn ignition on. Using DVOM, check voltage on cruise control brake switch signal circuit. If voltage reading is greater than.5 volt, go to next step. If voltage reading is not greater than.5 volt, go to step  8.
  6. Repair short to voltage on cruise control brake switch signal circuit. After repairs, go to step  9.
  7. Replace cruise control brake switch. After replacing switch, go to step  9.
  8. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  9. Using scan tool, select DTC, CLEAR INFO function. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter this DTC. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step  2.
  10. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test.
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