Ford 2003 Mustang Workshop Manual page 2168

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
Reconnect all components.
Connect the Evaporative Emission System Leak
Tester to the fuel filler pipe.
Close the canister vent solenoid. Refer to
Vent Solenoid Closing Procedure
Pressurize the system.
Does the pressure drop?
PINPOINT TEST F: UNABLE TO REFUEL VEHICLE (ORVR)
F1 TEST THE FUEL FILLER PIPE AND THE FUEL
FILLER PIPE CHECK VALVE
Remove the fuel filler cap.
Connect the Evaporative Emission System Leak
Tester to the fuel filler pipe.
Close the canister vent solenoid. Refer to
Vent Solenoid Closing Procedure
Access PCM PID FTP V.
Pressurize the EVAP System to 3.48 kPa (14
inches H O).
2
Is PID FTP V reading 3.11 kPa to 3.86 kPa (12.5
to 15.5 inches H
F2 TEST THE EVAP SYSTEM FOR RESTRICTION
Connect the Evaporative Emission System Leak
in this section.
Test Step
in this section.
O) (4.22 to 4.90 volts)?
2
verification drive cycle. REFER to
Evaporative Emission Repair
Verification Drive Cycle
section.
No
INSTALL a new fuel vapor control
valve tube assembly. REFER to
Vapor Control Tube Assembly Valve
in this section. CARRY OUT a leak
test. REFER to
System Leak Test
the system passes the leak test,
CARRY OUT the evaporative
emission repair verification drive
cycle. REFER to
Emission Repair Verification Drive
Cycle in this section.
Yes
INSPECT fuel filler pipe to tank
grommet for cuts, abrasions or leaks.
REFER to Section 310-00
Canister
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
section.
Result / Action to Take
Yes
GO to F2 .
No
Canister
GO to F10 .
Yes
in this
Fuel
Evaporative Emission
in this section. If
Evaporative
for repair
in this