Evap Canister Vent Shut Valve Test - Honda Civic 2002-2003 Service Manual

EVAPSystem
DTe Troubleshooting (cont'd)
20. Plug the fuel tank port (AI of the EVAP two way
valve.
A973X-041-XXXXX
A
21. While monitoring FTPsensorvoltagewiththe
Honda PGM Tester, or measuring the voltage
between ECM connector terminals E4 and E 14,
slowly pump the vacuum pump until the voltage
drops to about
1.5
volts.
ECM CONNECTOR E 131P)
SG3IPNK)
1 213 4 5 6 71
18 9
':L
/1 /I/t /11 415 16 1/1181/120 21
22231 24 1
lc
~ 27VI 29 130 31
FTPILTGRN)
Wire side of female terminals
Does the voltage drop to 1.5 V and hold for at
least 20 seconds?
YES- The EVAP bypass solenoid valve/EVAP two
way valve is OK. Go to step 22.
NO-Repairthe leak from the EVAP bypass
solenoid valve, EVA? two way valve, or
FTPsensor .•
11-178
EVAP Canister Vent Shut Valve Test
22. Disconnect the vacuum hose from the EVAP
canister vent filter (A), and connect a vacuum pump
to the hose.
23. Turn the ignition switch ON 1111.
24. Apply vacuum to the hose with five strokes of the
pump.
Does the valve hold vacuum?
YES-Go to step
25.
NO-The EVAP canister vent shut valve is OK. Go
to step 30.
25. Turn the ignition switch OFF.
26. Disconnect the EVAP canister vent shut valve 2P
connector.
27. Check for continuity between EVAP canister
vent
shut valve 2P connector terminal No.2 and body
ground.
EVAP CANISTER VENT SHUT
VALVE 2P CONNECTOR
Wire side of female terminals