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LS & Thunderbird

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  1. 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  3.

  2. Testing Vent Portion Of EVAP System

    Using scan tool, open canister vent solenoid. If pressure drops immediately, 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 step  5.

  3. Testing Fuel Filler Pipe

    Connect EVAP tester to fuel filler pipe. Disconnect fuel filler pipe from fuel tank. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, go to next step. If pressure does not drop immediately, replace fuel filler pipe. 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.

  4. Testing Fuel Vapor Control Valve Tube

    Reconnect fuel filler pipe to fuel tank. Lower fuel tank about 3/4" (19 mm). 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, fuel vapor control valve tube is pinched. 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 FTP V PID is not 4.22-4.90 volts, fuel vapor control valve tube is or fuel tank fuel vapor control valve is blocked. 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.

  5. Isolate Location Of Blockage

    Disconnect fuel vapor control valve tube from EVAP canister purge outlet tube. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, go to next step. If pressure does not drop immediately, replace fuel tank 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.

  6. 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. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure does not drop immediately, go to next step. If pressure drops immediately, replace canister vent solenoid. 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.

  7. Testing Canister Vent Solenoid Hose Assembly

    Reinstall differential. Lower rear subframe to access EVAP canister and bracket assembly. Lower EVAP canister and bracket assembly. Disconnect canister vent solenoid hose from 1.0L EVAP canister. See Figure. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, 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 drop immediately, go to next step.

  8. Testing 1.0L EVAP Canister

    Disconnect fuel vapor storage EVAP canister inlet tube at 1.0L EVAP canister. See Figure. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, 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 drop immediately, go to next step.

  9. Testing Fuel Vapor Storage Canister Inlet Tube

    Disconnect fuel vapor storage canister inlet tube from 2.0L EVAP canister. See Figure. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, 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 drop immediately, go to next step.

  10. Testing 2.0L EVAP Canister

    Disconnect EVAP canister purge outlet tube at 2.0L EVAP canister. See Figure. Pressurize system to 14 in. H2 O (3.48 kPa). If pressure drops immediately, 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 drop immediately, 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.
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