Ford Mustang (1999-2004) Service Manual: Pinpoint Tests

NOTE: Reinstall or install new evaporative emission hose clamps removed or damaged during testing procedures.

PINPOINT TEST A: DTC P0442 SMALL LEAK IN EVAP SYSTEM

Test Step Result / Action to Take

NOTE: Condition P0442 DTC set: less than 0.625 kPa (2.5 inches H 2 O) bleed-up over 15 seconds at 75% fuel fill. Vapor generation limit: more than 0.625 kPa (2.5 inches H 2 O) over 120 seconds.
A1 VISUALLY INSPECT THE COMPONENTS FOR SMALL LEAKS Yes

REPAIR or INSTALL new components as necessary.GO to A2 .

No

GO to A2 .
  • Check for the presence of a fuel filler cap. Do not tighten or check for correct installation at this time.
  • Verify the canister vent solenoid is correctly seated on the EVAP canister.
  • Check for cut or loose connections to fuel vapor hoses, tubes and connections in the following locations:
  • EVAP canister to EVAP canister purge valve
  • EVAP canister to fuel vapor vent valve assembly
  • fuel vapor control valve tube assembly to fuel tank
  • Check the fuel filler pipe for damage.
  • Is a concern with a hose, tube, connection or valve visually evident?
A2 CHECK AT THE EVAP TEST PORT FOR SMALL SYSTEM LEAKS Yes

GO to A3 .

No

GO to A4 .
  • Disconnect and plug the evaporative emission return tube at the intake manifold.
  • Complete the evaporative emission system leak test. Refer to Evaporative Emission System Leak Test in this section.
  • Does the system pass the leak test?
A3 VISUALLY INSPECT THE FUEL FILLER CAP Yes

INSTALL a new fuel filler cap. GO to A4 .

No

GO to A4 .
  • Visually inspect the fuel filler cap for damage.
  • Is the fuel filler cap damaged?
A4 CHECK FOR SMALL LEAKS AT THE FUEL FILLER CAP AND EVAP TEST PORT Yes

REPAIR or INSTALL new components as necessary. GO to A5 .

No

INSTALL the fuel filler cap. CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emissions repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Key in ON position.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Using the ultrasonic leak detector, check the fuel filler cap and EVAP test port for leaks.
  • Is a leak detected?
A5 CHECK FOR CONCERN OTHER THAN THE FUEL FILLER CAP Yes

CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL the fuel filler cap. GO to A6 .
  • Refer to previous test results.
  • Did the system pass the evaporative emission system leak test carried out in pinpoint test Step A2?
A6 CHECK FOR SMALL LEAK WITH TESTER SET AT FILL POSITION Yes

GO to A7 .

No

DISCONTINUE pressurizing the system. GO to A8 .
  • Connect the Evaporative Emission System Leak Tester to the EVAP test port.
  • Key in ON position.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Turn the selector on the Evaporative Emission System Leak Tester to the FILL position.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure on the EVAP system hold between 3.43 kPa and 3.53 kPa (13.80 inches and 14.20 inches H 2 O)
A7 CHECK FOR LEAKS IN THE COMPLETE EVAP SYSTEM Yes

REPAIR or INSTALL new components as necessary. CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emissions repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

DISCONTINUE pressurizing the system. GO to A8 .
  • Connect the Evaporative Emission System Leak Tester to the EVAP test port.
  • Key in ON position.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Using the ultrasonic leak detector, check the following EVAP system locations:
  • EVAP return tube to EVAP canister purge valve
  • EVAP canister purge valve to EVAP canister- canister vent solenoid assembly
  • EVAP canister - canister vent solenoid assembly to fuel tank
  • fuel filler cap and fuel filler tube
  • Is a leak detected at EVAP return tube, EVAP canister purge outlet tube or EVAP canister tube or associated hose?
A8 CHECK FOR SMALL LEAK FROM THE EVAP RETURN TUBE TO THE FUEL VAPOR TEE Yes

REPAIR or INSTALL new components as necessary. REPEAT Step A6 to verify the repair.

GO to A9 .

No

GO to A9 .
  • Disconnect the EVAP canister purge outlet tube at the fuel vapor tee. Plug the opening in the EVAP canister purge outlet tube.
  • Connect the Evaporative Emission System Leak Tester to the EVAP test port.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Using the ultrasonic leak detector, check the EVAP system from the intake manifold to the EVAP canister purge outlet tube.
  • Is a leak detected?
A9 CHECK FOR SMALL LEAK BETWEEN EVAP CANISTER AND FUEL TANK FILLER PIPE Yes

REPAIR or INSTALL new components as necessary.

GO to A10 .

No

GO to A10 .
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Transfer the plug from the EVAP canister purge outlet tube to the fuel vapor tee.
  • Turn the Evaporative Emission System Leak Tester selector to the FILL position.
  • Key in ON position.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Using the ultrasonic leak detector, check the fuel vapor control valve tube to the fuel tank for leaks. Check the fuel tank pressure sensor, fuel vapor control valve tube and the fuel filler pipe. Check fuel tank to EVAP canister - canister vent solenoid.
  • Is a leak detected?
A10 CHECK EVAP SYSTEM AT FUEL FILLER PIPE Yes

RESTORE the system to normal operation.

CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emissions repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to A6 .
  • Reconnect the EVAP canister purge outlet tube to the fuel vapor tee.
  • Complete the evaporative emission system leak test. Refer to Evaporative Emission System Leak Test in this section.
  • Does the EVAP system pass the leak test?

PINPOINT TEST B: DTC P0455 MAJOR LEAK OR NO FLOW DETECTED OR DTC P1443 VERY SMALL OR NO PURGE FLOW DETECTED IN SYSTEM

Test Step Result / Action to Take
NOTE: Condition DTC P0455 set: -1.74 kPa (-7.0 inches H 2 O) over 30 seconds.
NOTE: Condition DTC P1443 set: -1.74 kPa (-7.0 inches H 2 O) over 30 seconds with more than 0.02 lb/min vapor flow.
B1 CHECK FOR DIAGNOSTIC TROUBLE CODE P0455 OR P1443 Yes

GO to B2 .

No

GO to B3 .
  • Use the recorded results from the PCM DTCs.
  • Is DTC P0455 present?
B2 VISUALLY CHECK FOR GROSS EVAP SYSTEM LEAKS Yes

REPAIR or INSTALL new EVAP components as necessary.

GO to B3 .

No

GO to B3 .
  • Check for the presence of a fuel filler cap. Do not tighten or check for correct installation at this time.
  • Check the input port vacuum and EVAP return tube are connected to the EVAP canister purge valve.
  • Check that the canister vent solenoid is correctly attached to the EVAP canister.
  • Check for disconnected or cracked fuel vapor hoses or tubes between the intake manifold and following components:
  • EVAP canister purge valve
  • EVAP canister
  • fuel vapor vent valve assembly
  • fuel vapor control valve tube assembly
  • Check for damaged fuel tank or fuel filler pipe.
  • Is a concern with a hose, tube, connection or valve visually evident?
B3 CHECK FOR EVAP SYSTEM LEAKS Yes

GO to B4 .

No

VERIFY that the fuel filler cap is installed correctly. REPAIR or INSTALL new components as necessary. CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the EVAP return tube from the intake manifold and plug the EVAP return tube.
  • Connect the Evaporative Emissions System Leak Tester to the EVAP test port.
  • Carry out the evaporative emissions system leak test.

    Refer to Evaporative Emission System Leak Test in this section.

  • Does the system pressure stay above 1.99 kPa (8 inches H 2 O)?
B4 CHECK FOR BLOCKAGE BETWEEN THE EVAP CANISTER PURGE VALVE AND FUEL VAPOR TEE Yes

GO to B5 .

No

INSTALL a new vapor line between the EVAP canister purge valve and the fuel vapor tee. CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Key in ON position.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Open the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Does the pressure drop immediately?
B5 CHECK FOR BLOCKAGE BETWEEN FUEL FILLER PIPE AND THE FUEL VAPOR TEE Yes

GO to B6 .

No

INSTALL new fuel tank vapor line(s). REPEAT pinpoint test Step B5 to verify the repair. CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Connect the Evaporative Emissions System Leak Tester to the fuel filler pipe.
  • Pressurize the EVAP system to 6.47 to 6.97 kPa (26 to 28 inches H 2 O).
  • Does the pressure drop immediately?
B6 CHECK FOR FAILED EVAP CANISTER PURGE VALVE OR FUEL TANK PRESSURE SENSOR Yes

INSTALL a new EVAP canister purge valve. REFER to Evaporative Emission Canister Purge Valve in this section.

CARRY OUT the evaporative emission system leak test.

REFER to Evaporative Emission System Leak Test in this section. If no leak is detected, CARRY OUT the evaporative emissions repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL a new fuel tank pressure sensor. REFER to Fuel Tank Pressure Sensor in this section. CARRY OUT the evaporative emission system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY out the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Use the recorded results from the PCM DTCs.
  • Are DTC codes P0455 and P1443 present?

PINPOINT TEST C: DTC P1450 EXCESSIVE VACUUM DETECTED IN THE FUEL TANK

Test Step Result / Action to Take

NOTE: Condition P1450 DTC set: more than -1.79 kPa (-7.2 inches H 2 O) over 30 seconds.
C1 CHECK FOR VISUAL CAUSES OF EXCESSIVE FUEL TANK VACUUM Yes

REMOVE any contamination or foreign material around fuel vapor hoses and tubes. REPAIR the hoses, tubes or components as necessary. After all visual concerns are repaired, GO to C2 .

No

GO to C2 .
  • Check for kinks or bends in the fuel vapor hoses and tubes.
  • Visually check the EVAP canister inlet port, canister vent solenoid filter or outlet hose for contamination or foreign material.
  • Check the canister vent solenoid for blockage or contamination.
  • Is a concern with a hose, tube, connection or component visually evident?
C2 CHECK FOR BLOCKAGE BETWEEN EVAP TEST PORT AND CANISTER VENT SOLENOID Yes

GO to C3 .

No

GO to Pinpoint Test D .
  • Disconnect and plug the EVAP return tube at the intake manifold.
  • Connect the Evaporative Emissions System Leak Tester to the EVAP test port.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
C3 CHECK FOR BLOCKAGE BETWEEN THE FUEL FILLER PIPE AND THE FUEL VAPOR TEE Yes

GO to C4 .

No

GO to Pinpoint Test D .
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
C4 CHECK FOR FUEL TANK PRESSURE SENSOR PID WITHOUT PRESSURE APPLIE Yes

GO to C5 .

No

REFER to Powertrain Control/Emissions Diagnosis (PC/ED) manual to continue diagnosis.
  • Disconnect the EVAP canister outlet tube at the EVAP canister.

  • Key in ON position.
  • Access PCM PID FTP V.
  • Record the reading.
  • Is PID FTP V reading between 2.40 and 2.80 volts?
C5 CHECK FOR STUCK OPEN EVAP CANISTER PURGE VALVE CONDITION AT IDLE Yes

INSTALL a new EVAP canister purge valve. REFER to Evaporative Emission Canister Purge Valve in this section.

CARRY OUT an EVAP system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT an evaporative emissions repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

CARRY OUT the EVAP system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emissions repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Connect the EVAP canister outlet tube.
  • Remove the plug from the EVAP return tube and reconnect the tube to the intake manifold.
  • Verify that the fuel filler cap is correctly installed.
  • Key in ON position.
  • Access PCM PIDs FTP V and EVAPPDC.
  • Start the engine and allow to idle.
  • Monitor the FTP V and EVAPPDC PIDs.
  • When PID EVAPPDC is zero, is PID FTP V reading below 2.40 volts?

PINPOINT TEST D: HISSING SOUND WHEN REMOVING FUEL CAP

Test Step Result / Action to Take
D1 TEST FOR FUEL TANK PRESSURE SENSOR OPERATION Yes

GO to D2 .

No

GO to D3
  • Key in OFF position.
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Is the FTP (FTP V) PID reading 3.11 kPa to 3.86 kPa (12.5 to 15.5 inches H 2 O) (4.22 to 4.90 volts)?
D2 TEST FOR BLOCKAGE IN VENTING PORTION OF EVAP SYSTEM Yes

CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D7 .
  • Open the canister vent solenoid by selecting the STOP button on the scan tool.
  • Does the pressure drop immediately?
D3 TEST FOR FUEL TANK PRESSURE SENSOR OPERATION Yes

GO to D4 .

No

REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.
  • Connect the Evaporative Emission System Leak Tester to the evaporative emission test port.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Is the FTP (FTP V) PID reading 3.11 kPa to 3.86 kPa (12.5 to 15.5 inches H 2 O) (4.22 to 4.90 volts)?
D4 TEST TO DETERMINE BLOCKAGE LOCATION Yes

GO to D5 .

No

GO to D7 .
  • Open the canister vent solenoid.
  • Does the pressure drop immediately?
D5 TEST FOR PINCHED FUEL VAPOR CONTROL VALVE TUBE Yes

INSTALL a new fuel vapor control valve tube assembly. REFER to Fuel Vapor Control Tube Assembly Valve in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D6 .
  • Lower the fuel tank 19.05 mm (3/4 inch).
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Is the FTP (FTP V) PID reading 3.11 kPa to 3.86 kPa (12.5 to 15.5 inches H 2 O) (4.22 to 4.90 volts)?
D6 TEST FOR BLOCKAGE IN FUEL FILLER TUBE ASSEMBLY Yes

INSTALL a new fuel vapor control valve tube assembly. REFER to Fuel Vapor Control Tube Assembly Valve in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL a new fuel filler pipe assembly. REFER to Section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the tank vapor recirculation tube from the fuel filler pipe and plug both openings.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Remove the plug from the vapor recirculation tube.
  • Does the pressure drop immediately?
D7 TEST FOR BLOCKAGE IN FRESH AIR VENT HOSE Yes

INSTALL a new fresh air vent hose.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D8 .
  • Disconnect the fresh air vent hose from the fuel filler pipe inside the luggage compartment.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
D8 TEST FOR BLOCKAGE IN THE FRESH AIR TUBE ON THE FUEL FILLER PIPE ASSEMBLY Yes

INSTALL a new fuel filler pipe assembly. REFER to Section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D9 .
  • Disconnect the fresh air tube from the fuel filler pipe assembly.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
D9 TEST FOR BLOCKAGE IN THE TANK VAPOR VALVE ASSEMBLY-FRESH AIR TUBE Yes

INSTALL a new tank vapor valve assembly-fresh air tube. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D10 .
  • Disconnect the tank vapor valve assembly-fresh air tube from the canister vent solenoid vent hose.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
D10 TEST FOR BLOCKAGE IN CANISTER VENT SOLENOID HOSE Yes

INSTALL a new canister vent solenoid hose. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D11 .
  • Disconnect the canister vent solenoid hose from the canister vent solenoid

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
D11 TEST FOR BLOCKAGE IN CANISTER VENT SOLENOID Yes

INSTALL a new canister vent solenoid. REFER to Evaporative Emission Canister Vent Solenoid in this section. CARRY OUT a leak test.

REFER Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D12 .
  • Disconnect the canister vent solenoid from the evaporative emissions canister. Refer to Evaporative Emission Canister Vent Solenoid in this section.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
D12 TEST FOR BLOCKAGE IN EVAPORATIVE EMISSIONS CANISTER Yes

INSTALL a new evaporative emissions canister. REFER to Evaporative Emission Canister in this section. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to D13 .
  • Disconnect the evaporative emissions canister inlet elbow from the evaporative emissions canister.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
D13 TEST FOR BLOCKAGE IN CANISTER INLET ELBOW Yes

INSTALL a new evaporative emissions canister inlet elbow.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL a new fuel vapor control valve tube assembly. REFER to Fuel Vapor Control Tube Assembly Valve in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the fuel vapor control valve tube assembly from the evaporative emissions canister inlet elbow.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?

PINPOINT TEST E: EXCESSIVE FUEL ODOR

Test Step Result / Action to Take
E1 EVAPORATIVE EMISSION SYSTEM LEAK TEST Yes

GO to E2 .

No

GO to E3 .
  • Carry out the Evaporative Emission System Leak Test procedure. Refer to Evaporative Emission System Leak Test in this section.
  • Does the EVAP system pass the leak test?
E2 CARRY OUT THE EVAPORATIVE EMISSION SYSTEM RUNNING LOSS MONITOR REPAIR VERIFICATION DRIVE CYCLE Yes

For DTCs P0442, P0455, P1443, and P1450 REFER to the Diagnostic Trouble Code (DTC) Index in this section. For all other DTCs, REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual for diagnosis of the DTCs.

No

EVAP system diagnosis complete.

REFER to Symptom Chart.
  • Carry out the Evaporative Emission Running Loss Monitor Repair Verification Drive Cycle; refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.
  • Are the powertrain control module DTCs retrieved?
E3 ISOLATE SYSTEM LEAK FROM FRONT TO REAR Yes

GO to E4 .

No

GO to E9 .
  • Disconnect EVAP canister purge outlet tube from fuel vapor control valve tube assembly and plug both ends.
  • Connect the Evaporative Emission System Leak Tester to the evaporative emissions test port.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E4 TEST FUEL VAPOR HOSE FROM FUEL TANK TO TUBE ASSEMBLY FUEL SUPPLY-RETURN AND VAPOR Yes

GO to E5 .

No

INSTALL a new fuel vapor return hose. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test on this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the fuel vapor return hose from the tube assembly fuel supply-return and vapor under vehicle, and plug the fuel supply-return and vapor tube assembly.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E5 TEST THE FUEL SUPPLY-RETURN AND VAPOR TUBE ASSEMBLY Yes

GO to E6 .

No

INSTALL a new fuel supply-return and vapor tube assembly. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test on this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the fuel supply-return and vapor tube assembly from the EVAP canister purge outlet tube, and plug the EVAP canister purge outlet tube.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E6 TEST FOR EVAPORATIVE EMISSIONS TEST PORT LEAK Yes

INSTALL a new evaporative emissions test port. REFER to Evaporative Emission Test Port .

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test on this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

RECONNECT the evaporative emissions test port tube to the EVAP canister purge outlet tube. GO to E7 .
  • Disconnect the evaporative emissions test port tube from the EVAP canister purge outlet tube and plug the evaporative emissions test port tube.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E7 TEST FOR EVAP CANISTER PURGE OUTLET TUBE LEAK Yes

INSTALL a new EVAP canister purge outlet tube. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test on this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

RECONNECT the EVAP canister purge outlet tube. GO to E8 .
  • Disconnect the EVAP canister purge outlet tube from the evaporative emissions canister purge valve and plug the EVAP canister purge outlet tube.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E8 TEST FOR LEAK AT EVAPORATIVE EMISSIONS PURGE VALVE Yes

INSTALL a new evaporative emissions canister purge valve.

REFER to Evaporative Emission Canister Purge Valve in this section.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test on this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL a new evaporative emissions return tube. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test on this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the evaporative emissions return tube from the evaporative emissions canister purge valve and plug the evaporative emissions canister purge valve.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E9 TEST FOR BLOCKAGE IN VENTING PORTION OF EVAP SYSTEM Yes

GO to E14 .

No

GO to E10 .
  • Reconnect all components.
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Open the canister vent solenoid.
  • Does the pressure drop immediately?
E10 TEST FOR BLOCKAGE IN THE FRESH AIR VENT HOSE Yes

INSTALL a new fresh air vent hose.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to E11 .
  • Disconnect the fresh air vent hose from the fuel filler pipe inside the luggage compartment.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E11 TEST FOR BLOCKAGE IN THE FRESH AIR TUBE ON THE FUEL FILLER PIPE ASSEMBLY Yes

INSTALL a new fuel filler pipe assembly. REFER to Section. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to E12 .
  • Disconnect the fresh air tube from the fuel filler pipe assembly.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E12 TEST FOR BLOCKAGE IN THE FUEL VAPOR CONTROL VALVE TUBE ASSEMBLY-FRESH AIR TUBE Yes

INSTALL a new fuel vapor control valve tube assembly-fresh air tube.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to E13 .
  • Disconnect the fuel vapor control valve tube assembly-fresh air tube from the canister vent solenoid vent hose

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E13 TEST FOR BLOCKAGE IN CANISTER VENT SOLENOID HOSE Yes

INSTALL a new canister vent solenoid hose. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL a new canister vent solenoid. REFER to Evaporative Emission Canister Vent Solenoid in this section. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the canister vent solenoid hose from the canister vent solenoid.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
E14 TEST FOR LEAK IN EVAPORATIVE EMISSIONS CANISTER Yes

EVAP system diagnosis complete.

GO to E18 .

No

GO to E15
  • Carry out the Evaporative Emission Canister and Bracket Assembly Leak Test. Refer to Evaporative Emission System Leak Test in this section.
  • Does the EVAP system pass the leak test?
E15 TEST FOR CANISTER VENT SOLENOID LEAK Yes

INSTALL a new canister vent solenoid. REFER to Evaporative Emission Canister Vent Solenoid in this section. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to E16 .
  • Disconnect the canister vent solenoid from the evaporative emissions canister and plug the canister.

  • Carry out the evaporative emission system leak test. Refer to Evaporative Emission System Leak Test in this section.
  • Does the EVAP system pass the leak test?
E16 TEST FOR CANISTER LEAK Yes

INSTALL a new EVAP canister assembly. REFER to Evaporative Emission Canister in this section.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to E17 .
  • Disconnect the EVAP canister inlet elbow from the evaporative emissions canister and plug the EVAP canister inlet elbow.

  • Carry out the evaporative emission system leak test. Refer to Evaporative Emission System Leak Test in this section.
  • Does the EVAP system pass the leak test?
E17 TEST FOR CANISTER INLET ELBOW LEAK Yes

INSTALL a new evaporative emissions canister inlet elbow.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL a new fuel vapor control valve tube assembly. REFER to Fuel Vapor Control Tube Assembly Valve in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the fuel vapor control valve tube assembly from the EVAP canister inlet elbow and plug the fuel vapor control valve tube assembly.

  • Carry out the evaporative emissions system leak test. Refer to Evaporative Emission System Leak Test in this section.
  • Does the EVAP system pass the leak test?
E18 TEST FOR LEAKAGE IN FUEL FILLER PIPE GROMMET Yes

INSPECT fuel filler pipe to tank grommet for cuts, abrasions or leaks.

REFER to Section for repair procedures.

No

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Reconnect all components.
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the system.

  • Does the pressure drop?

PINPOINT TEST F: UNABLE TO REFUEL VEHICLE (ORVR)

Test Step Result / Action to Take
F1 TEST THE FUEL FILLER PIPE AND THE FUEL FILLER PIPE CHECK VALVE Yes

GO to F2 .

No

GO to F10 .
  • Remove the fuel filler cap.
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Access PCM PID FTP V.
  • Pressurize the EVAP System to 3.48 kPa (14 inches H 2 O).
  • Is PID FTP V reading 3.11 kPa to 3.86 kPa (12.5 to 15.5 inches H 2 O) (4.22 to 4.90 volts)?
F2 TEST THE EVAP SYSTEM FOR RESTRICTION Yes

GO to F3 .

No

CARRY OUT the evaporative emissions system leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emissions repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Attempt to pressurize the EVAP System to 3.48 kPa (14 inches H 2 O).
  • Does the system pressurize?
F3 TEST FOR BLOCKAGE IN FRESH AIR VENT HOSE Yes

INSTALL a new fresh air vent hose.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F4 .
  • Disconnect the fresh air vent hose from the fuel filler pipe inside the luggage compartment.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
F4 TEST FOR BLOCKAGE IN THE FRESH AIR TUBE ON THE FUEL FILLER PIPE ASSEMBLY Yes

INSTALL a new fuel filler pipe assembly. REFER to Section. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F5 .
  • Disconnect the fresh air tube from the fuel filler pipe assembly

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
F5 TEST FOR BLOCKAGE IN THE TANK VAPOR VALVE ASSEMBLY-FRESH AIR TUBE Yes

INSTALL a new tank vapor valve assembly-fresh air tube. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F6 .
  • Disconnect the tank vapor valve assembly-fresh air tube from the canister vent solenoid vent hose.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
F6 TEST FOR BLOCKAGE IN CANISTER VENT SOLENOID HOSE Yes

INSTALL a new canister vent solenoid hose. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F7 .
  • Disconnect the canister vent solenoid hose from the canister vent solenoid.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
F7 TEST FOR BLOCKAGE IN CANISTER VENT SOLENOID Yes

INSTALL a new canister vent solenoid. REFER to Evaporative Emission Canister Vent Solenoid in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F8 .
  • Disconnect the canister vent solenoid from the evaporative emissions canister. Refer to Evaporative Emission Canister Vent Solenoid in this section.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
F8 TEST FOR BLOCKAGE IN EVAPORATIVE EMISSIONS CANISTER Yes

INSTALL a new evaporative emissions canister. REFER to Evaporative Emission Canister in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F9 .
  • Disconnect the evaporative emissions canister inlet elbow from the evaporative emissions canister.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
F9 TEST FOR BLOCKAGE IN CANISTER INLET ELBOW Yes

INSTALL a new evaporative emissions canister inlet elbow.

CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F10 .
  • Disconnect the fuel vapor control valve tube assembly from the evaporative emissions canister inlet elbow.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Does the pressure drop immediately?
F10 TEST FOR PINCHED FUEL VAPOR CONTROL VALVE TUBE Yes

INSTALL a new fuel vapor control valve tube assembly. REFER to Fuel Vapor Control Tube Assembly Valve in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

GO to F11 .
  • Lower the fuel tank 19.05 mm (3/4 inch).
  • Connect the Evaporative Emission System Leak Tester to the fuel filler pipe.
  • Close the canister vent solenoid. Refer to Canister Vent Solenoid Closing Procedure in this section.
  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Is the FTP (FTP V) PID reading 3.11 kPa to 3.86 kPa (12.5 to 15.5 inches H 2 O) (4.22 to 4.90 volts)?
F11 TEST FOR BLOCKAGE IN FUEL FILLER TUBE ASSEMBLY Yes

INSTALL a new fuel vapor control valve tube assembly. REFER to Fuel Vapor Control Tube Assembly Valve in this section. CARRY OUT a leak test. REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.

No

INSTALL a new fuel filler pipe assembly. REFER to Section. CARRY OUT a leak test.

REFER to Evaporative Emission System Leak Test in this section. If the system passes the leak test, CARRY OUT the evaporative emission repair verification drive cycle. REFER to Evaporative Emission Repair Verification Drive Cycle in this section.
  • Disconnect the tank vapor recirculation tube from the fuel filler pipe and plug both openings.

  • Pressurize the EVAP system to 3.48 kPa (14 inches H 2 O).
  • Remove the plug from the vapor recirculation tube.
  • Does the pressure drop immediately?
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