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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 P1575: Extended Travel 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 . After performing OBD system check, go to next step.
  2. Start engine. Using scan tool, monitor ETB switch. If scan tool indicates RELEASED, go to next step. If scan tool does not indicate RELEASED, go to step  7.
  3. Start engine. Using scan tool, monitor ETB switch. Depress brake pedal about halfway down. If scan tool indicates APPLIED, see DIAGNOSTIC AIDS . If scan tool does not indicate APPLIED, go to next step.
  4. Check ETB switch adjustment. Adjust if necessary. After adjustment, go to step  17. If adjustment is not necessary, go to next step.
  5. Turn engine off. Disconnect ETB switch connector. Turn ignition on, with engine off. If scan tool indicates APPLIED, go to step  14. If scan tool does not indicate APPLIED, go to next step.
  6. Turn ignition off. Disconnect PCM harness connector. Turn ignition on, with engine off. Using a DVOM, check voltage on ETB 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  16.
  7. Turn ignition off. Disconnect ETB switch harness connector. Turn ignition on, with engine off. Using a test light connected to ground, probe ignition feed circuit at ETB switch harness connector. If test light illuminates, go to next step. If test light does not illuminate, go to step  11.
  8. Turn ignition off. Jumper ETB signal circuit to ignition feed circuit at harness connector. Turn ignition on, with engine off. Using scan tool, monitor ETB switch parameter. If scan tool indicates RELEASED, go to step  13. If scan tool does not indicate RELEASED, go to next step.
  9. Turn ignition off. Disconnect PCM harness connector. Check continuity of ETB switch signal circuit. If continuity exists, go to step  15. If continuity does not exist, go to step  12.
  10. Repair short to voltage in ETB switch signal circuit. After repairs, go to step  17.
  11. Repair open in ETB switch ignition feed circuit. After repairs, go to step  17.
  12. Repair open in ETB switch signal circuit. After repairs, go to step  17.
  13. Check for poor connections at ETB switch connector. Repair as necessary. After repairs, go to step  17. If connections are okay, go to next step.
  14. Replace ETB switch. After replacing switch, go to step  17.
  15. Check for poor connections at PCM harness connector. Repair as necessary. After repairs, go to step  17. If connections are okay, go to next step.
  16. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  17. 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.
  18. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test.
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