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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0443: Evaporative Emission (EVAP) Purge Solenoid Control Circuit >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different variant/trim than selected.
  1. If powertrain diagnostic system check was performed, go to next step. If powertrain diagnostic system check was not performed, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under DIAGNOSTIC SYSTEM TESTS. After performing powertrain diagnostic system check, go to next step.
  2. Warm engine to normal operating temperature. Operate engine at idle. Using scan tool, command EVAP solenoid to 50 percent and then to zero percent. If solenoid responds as commanded, go to next step. If solenoid does not respond as commanded, go to step  4.
  3. Using scan tool, review FREEZE FRAME and/or FAILURE RECORDS data for this DTC. Turn ignition off for at least 30 seconds. Start engine. Operate vehicle within conditions for setting this DTC. If this DTC resets, go to next step. If DTC does not reset, see DIAGNOSTIC AIDS .
  4. Turn ignition off. Locate and disconnect EVAP purge solenoid. See Figure. Turn ignition on. Using a test light connected to ground, probe EVAP purge solenoid connector terminal "A" (Pink wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  11.
  5. Connect test light between EVAP purge solenoid connector terminals "A" (Pink wire) and "B" (Dark Green/White wire). Using scan tool, command EVAP purge solenoid to zero percent. If test light illuminates, go to step  8. If test light does not illuminate, go to next step.
  6. Using scan tool, command EVAP purge solenoid to 50 percent. If test light illuminates, go to step  9. If test light does not illuminate, go to next step.
  7. Check for short to voltage or open in Dark Green/White wire between EVAP purge solenoid connector terminal "B" and PCM connector C2 terminal No. 34. See Figure. Repair as necessary. After repairs, go to step  14. If circuit is okay, go to step  10.
  8. Check for short to ground in Dark Green/White wire between EVAP purge solenoid connector terminal "B" and PCM connector C2 terminal No. 34. See Figure. Repair as necessary. After repairs, go to step  14. If circuit is okay, go to step  13.
  9. Check for poor connections at EVAP purge solenoid. Repair as necessary. After repairs, go to step  14. If connections are okay, go to step  12.
  10. Check for poor connections at PCM. Repair as necessary. After repairs, go to step  14. If connections are okay, go to step  13.
  11. Repair open or short to ground in Pink wire between EVAP purge solenoid connector terminal "A" and splice S182. S182 is located in headlight harness approximately 5 in. from harness breakout to bottom underhood fuse block. After repairs, go to step  14.
  12. Replace EVAP purge solenoid. See REMOVAL, OVERHAUL & INSTALLATION - CARS article. After replacing solenoid, go to step  14.
  13. Replace PCM. See REMOVAL, OVERHAUL & INSTALLATION - CARS article. After replacing PCM, go to next step.
  14. Using scan tool, clear DTCs. Turn ignition off for at least 30 seconds. Start engine and allow it to reach normal operating temperature. 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, go to step  2.
  15. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no undiagnosed DTCs are displayed, system is okay.
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