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LS & Thunderbird

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  1. Testing Evaporative Emission Running Loss System Monitor -  Perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If PCM DTCs P0442, P0455, P1443 or P1450 are retrieved, see EVAPORATIVE EMISSIONS DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article for appropriate test procedure. If any other PCM DTCs are retrieved, see DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article for appropriate test procedure. If no PCM DTCs are retrieved, go to next step.

  2. Evaporative Emission System Leak Test

    Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, go to next step. If system does not pass, go to step  9.

  3. Testing Fuel Tank Pressure Sensor Operation

    Connect Evaporative Emissions System Leak Tester (134-00056) to fuel filler pipe. Turn ignition on. Using scan tool, close canister vent solenoid. Select OUTPUT TEST MODE, FTP and FTP V PID. Select ALL OFF mode. Press START button on scan tool to close canister vent solenoid. Pressurize system to 14 in. H2 O (3.48 kPa). If FTP V PID is 4.22-4.90 volts, go to next step. If FTP V PID is not 4.22-4.90 volts, go to TEST D .

  4. Testing Vent Portion Of EVAP System

    Using scan tool, open canister vent solenoid. If pressure drops immediately, go to next step. If pressure does not drop immediately, go to TEST D .

  5. Testing Evaporative Emissions Test Port

    Move EVAP tester to test port. Using scan tool, close canister vent solenoid. Pressurize system to 14 in. H2 O (3.48 kPa). If FTP V PID is 4.22-4.90 volts, evaporative emission system is operating normally. If FTP V PID is not 4.22-4.90 volts, go to next step.

  6. Testing Fuel Vapor Control Valve Tube

    Disconnect fuel vapor control valve tube from under vehicle fuel supply and vapor tube assembly. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, replace fuel tank assembly. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, go to next step.

  7. Testing Under Vehicle Fuel Supply & Vapor Tube Assembly

    Disconnect under vehicle fuel supply and vapor tube assembly from engine compartment fuel supply and vapor tube. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, replace under vehicle fuel supply and vapor tube assembly. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, go to next step.

  8. Testing Engine Compartment Fuel Supply & Vapor Tube Assembly

    Disconnect engine compartment fuel supply and vapor tube assembly from canister purge valve. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, replace engine compartment fuel supply and vapor tube assembly. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, replace EVAP canister purge valve. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  9. Testing For Location Of Leak

    Connect EVAP tester to fuel filler pipe. Disconnect fuel vapor control valve tube from under vehicle fuel supply and vapor tube assembly. Plug both tube open ends. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, leaks are in front portion of EVAP system, go to next step. If system does not pass, leaks are in rear portion of EVAP system, go to step  14.

  10. Testing To Confirm Leak In Front Portion Of EVAP System

    Move EVAP tester to test port. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system does not pass, go to next step. If system passes, replace "O" ring seals between fuel vapor control valve tube and under vehicle fuel supply and vapor tube assembly. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  11. Testing Under Vehicle Fuel Supply & Vapor Tube Assembly

    Disconnect under vehicle fuel supply and vapor tube assembly from engine compartment fuel supply and vapor tube assembly. Plug engine compartment fuel supply and vapor tube assembly. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system did not pass, go to next step. If system passes, replace under vehicle fuel supply and vapor tube assembly. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  12. Testing Engine Compartment Fuel Supply & Vapor Tube Assembly

    Disconnect engine compartment fuel supply and vapor tube assembly from canister purge valve. Plug EVAP canister purge valve. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system did not pass, go to next step. If system passes, replace engine compartment fuel supply and vapor tube assembly. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  13. Testing EVAP Canister Purge Valve

    Disconnect evaporative emission return tube from EVAP canister purge valve. Plug EVAP canister purge valve. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, replace evaporative emission return tube. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If system did not pass, replace EVAP canister purge valve. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  14. Testing To Determine Is In EVAP Canister Or Fuel Tank Portion Of System

    Disconnect fuel vapor control valve tube from EVAP canister purge outlet tube. Plug open end of fuel vapor control valve tube. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, reconnect all components and go to next step. If system does not pass, go to step  20.

  15. Testing EVAP Canister Vent Solenoid

    Reconnect fuel vapor control valve tube. Lower differential to gain access to canister vent solenoid. See appropriate DIFFERENTIALS article in DRIVE AXLES. Disconnect canister vent solenoid from canister vent hose. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system does not pass, go to next step. If system passes, replace canister vent solenoid. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  16. Testing Canister Vent Solenoid Hose Assembly

    Reinstall differential. Lower rear subframe to access EVAP canister and bracket assembly. Remove EVAP canister and bracket assembly. Move EVAP tester to EVAP canister purge outlet tube. See Figure. Disconnect canister vent solenoid hose from 1.0L EVAP canister. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure holds, replace canister vent solenoid hose assembly. Reconnect all components. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not hold, go to next step.

  17. Testing 1.0L EVAP Canister

    Disconnect fuel vapor storage EVAP canister inlet tube at 1.0L EVAP canister and plug inlet tube. See Figure. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure holds, replace 1.0L EVAP canister. Reconnect all components. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not hold, go to next step.

  18. Testing Fuel Vapor Storage Canister Inlet Tube

    Disconnect fuel vapor storage canister inlet tube from 2.0L EVAP canister and plug EVAP canister. See Figure. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure holds, replace fuel vapor storage canister inlet tube. Reconnect all components. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not hold, go to next step.

  19. Testing 2.0L EVAP Canister

    Disconnect EVAP canister purge outlet tube at 2.0L EVAP canister and plug outlet tube. See Figure. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure holds, replace 2.0L EVAP canister. Reconnect all components. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not hold, replace EVAP canister purge outlet tube. Reconnect all components. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  20. Testing Fuel Vapor Control Valve Tube & Fuel Tank

    Disconnect fuel filler pipe hose at tank and plug hose. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system does not pass, go to next step. If system passes, replace fuel tank assembly. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  21. Testing Fuel Filler Pipe Hose

    Disconnect fuel filler pipe hose at fuel filler pipe and plug pipe. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, replace fuel filler pipe hose. Reconnect all components. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If system did not pass initial test, replace fuel filler pipe assembly. Perform evaporative emissions system leak test. If system passes, perform DRIVE CYCLE PROCEDURE under DIAGNOSTIC MONITORS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.
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