LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 2000 >> CR-V SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Controls - Self-Diagnostics - 2.2L) >> Diagnostic Trouble Code Identification >> DTC P1441: EVAP System Flow During Non-Purge >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2000 Isuzu Hombre. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic II (OBD-II) system check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK in SELF-DIAGNOSTICS - INTRODUCTION article. After performing OBD-II system check, go to next step.
  2. Install Tech 2 scan tool. Check for other DTCs. If other DTCs are present, diagnose affected DTCs. If no other DTCs are present, go to next step.
  3. Turn ignition on, with engine off. Using scan tool, command EVAP canister purge valve and EVAP vent solenoid on and off. If purge valve and vent solenoid click, go to next step. If purge valve and/or vent solenoid do not click, see PCM OUTPUTS DIAGNOSIS  in DTC P0440.
  4. Turn ignition off. Remove fuel filler cap. Turn ignition on. Observe fuel pressure value on scan tool. If fuel tank pressure is zero mm Hg, go to next step. If fuel tank pressure is not as specified, go to DTC P0452: FUEL TANK PRESSURE SENSOR LOW VOLTAGE  or DTC P0453: FUEL TANK PRESSURE SENSOR HIGH VOLTAGE  .
  5. Reinstall fuel cap. Using scan tool, command EVAP vent solenoid on (closed). Zero EVAP pressure and vacuum gauges on EVAP Pressure/Purge Cart (J-41413). Connect EVAP pressure/purge cart to EVAP service port. Attempt to pressurize EVAP system to 5 in. H2 O. Monitor pressure value on scan tool. If pressure value is about 5 in. H2 O, go to next step. If pressure value on scan tool is not about 5 in. H2 O, go to step  7.
  6. Maintain fuel tank pressure at 12 mm Hg. Using scan tool, observe fuel tank pressure value. If scan tool indicates about 12 mm Hg, go to next step. If scan tool does not indicate about 12 mm Hg, go to DTC P0452: FUEL TANK PRESSURE SENSOR LOW VOLTAGE  or DTC P0453: FUEL TANK PRESSURE SENSOR HIGH VOLTAGE  .
  7. Disconnect vacuum hose at EVAP canister purge valve (from throttle body). Connect a vacuum pump to EVAP canister purge valve vacuum source fitting. Apply 15 in. Hg vacuum. Using scan tool, command EVAP canister purge valve on. If vacuum holds, go to next step. If vacuum is released, go to step  9.
  8. Check EVAP canister purge valve vacuum hoses for correct routing. If vacuum hoses are routed incorrectly, go to step  10. If vacuum hoses are routed correctly, see DIAGNOSTIC AIDS .
  9. Replace EVAP canister purge valve. After replacing valve, go to step  11.
  10. Correct vacuum hose routing. After repairs, go to next step.
  11. Start engine. Remove fuel cap. Using scan too, command EVAP vent solenoid on (closed) and EVAP canister vent valve off (zero percent). Reinstall fuel cap. While monitoring FUEL TANK VACUUM PRESSURE on scan tool, increase engine speed to 2500 RPM. If pressure is zero in. H2 O, go to next step. If pressure is more than zero in. H2 O, repeat step  3.
  12. Using scan tool, select CLEAR INFO or CLEAR DTCS function to clear DTCs. Start engine and allow it to idle. Ensure engine is at normal operating temperature. Operate vehicle within conditions required for setting this DTC. Select SPECIFIC DTC function, then enter DTC P1441. If scan tool indicates TEST RAN AND PASSED, go to next step. If scan tool does not indicate TEST RAN AND PASSED, repeat step  2.
  13. If any other DTCs are set, diagnose DTCs as necessary. If no other DTCs are set, system is okay.
scientia non olet · About LEMON Manuals