Ford 2003 Mustang Workshop Manual page 2161

Pressurize the EVAP system to 3.48 kPa (14
inches H O).
2
Does the pressure drop immediately?
D9 TEST FOR BLOCKAGE IN THE TANK VAPOR
VALVE ASSEMBLY—FRESH AIR TUBE
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 O).
2
Does the pressure drop immediately?
D10 TEST FOR BLOCKAGE IN CANISTER VENT
SOLENOID HOSE
Disconnect the canister vent solenoid hose from
the canister vent solenoid.
Pressurize the EVAP system to 3.48 kPa (14
inches H O).
2
Does the pressure drop immediately?
D11 TEST FOR BLOCKAGE IN CANISTER VENT
SOLENOID
Disconnect the canister vent solenoid from the
evaporative emissions canister. Refer to
Evaporative Emission Canister Vent Solenoid
this section.
Evaporative Emission Repair
Verification Drive Cycle
section.
No
GO to D9 .
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
section.
No
GO to D10 .
Yes
INSTALL a new canister vent
solenoid hose. CARRY OUT a leak
test. REFER to Evaporative Emission
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.
No
GO to D11 .
Yes
INSTALL a new canister vent
solenoid. REFER to
in
Emission Canister Vent Solenoid
in this
in this
in this section. If
Evaporative
Evaporative
in