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Home >> Chevrolet >> 2000 >> Camaro Base, 2D Coupe, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0443: EVAP Purge Solenoid Control Circuit >> Diagnostic Procedures

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, increase and decrease purge solenoid up and down. If solenoid responds as commanded, see DIAGNOSTIC AIDS . If solenoid does not respond as commanded, go to next step.
  3. Turn ignition off. Disconnect purge solenoid. Turn ignition on, with engine off. Using a test light connected to ground, probe purge solenoid ignition feed circuit. If test light illuminates, go to next step. If test light does not illuminate, go to step  10.
  4. Connect test light between purge solenoid ignition feed and ground circuits. Using scan tool, command purge solenoid on and off. If test light turns on and off, go to step  8. If test light does not turn on and off, go to next step.
  5. If test light remains illuminated, go to step  7. If test light remains off, go to next step.
  6. Check purge solenoid for an open or short to voltage. Repair as necessary. After repairs, go to step  13. If circuit is okay, go to step  9.
  7. Check purge solenoid control circuit for a short to ground. Repair as necessary. After repairs, go to step  13. If circuit is okay, go to step  9.
  8. Check for faulty purge solenoid connections. Repair as necessary. After repairs, go to step  13. If connections are okay, go to step  11.
  9. Check for faulty PCM connections. Repair as necessary. After repairs, go to step  13. If connections are okay, go to step  12.
  10. Repair purge solenoid ignition feed circuit. After repairs, go to step  13.
  11. Replace purge solenoid. After replacing solenoid, go to step  13.
  12. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  13. Using scan tool, clear DTCs. Operate vehicle under conditions required to set DTC. Check for DTCs. If this DTC is set, go to step  2. If no DTCs are set, system is okay.
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