Honda Civic Service Manual page 383

EVAP System
DTC Troubleshooting (cont'd)
8. Check for continuity between EVAP canister purge
valve 2P connenctor terminal No. 2 and body
grou no.
EVAP CANISTER PURGE
VALVE 2P CONNECTOR
Wire side of female terminals
ls there continuity?
YES Go to step 9.
NO Replace the EVAP canister purge valve.l
Disconnect ECM connector B (24P).
Check for continuity between EVAP canister purge
valve 2P connector terminal No. 2 and body ground.
EVAP CANISTER PURGE
VALVE 2P CONNECTOR
PCS
{YEL/BLU)
Wire side of female terminals
ls there continuity?
YES Repair short in the wire between the EVAP
c a n i s t e r p u r g e v a l v e a n d t h e E C I \ 4 { 8 2 1 ) . 1
NO Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). lf the symptom/indication
goes away with a known-good ECM, replace the
o r i g i n a l E C M . I
9 .
1 0 .
1
2
'.\'
11-176
v
F-
A973X-041-XXXXX
EVAP Bypass Solenoid Valve Test
1 1 , Disconnect both vacuum hoses from the EVAP two
way valve (A), and connect a vacuum pump to the
canister port on the EVAP two way valve.
Turn the EVAP bypass solenoid valve on with the
Honda PGM Tester, or connect ECM connecter
terminal E20 to body ground with a jumper wire.
ECM CONNECTOR E 131P)
1 2 3
4
5
6 1 7 l 1 8 9
4 5
6
/ 118
2C21
2 2 t 2 ?
24
z7l./
29
JUMPER
WIRE
2WBS
(BLU/RED}
1 3 .
1 4 .
Wire side of female terminals
Turn the ignition switch ON (ll).
Apply vacuum to the hose.
Does the valve hold vacuum?
Y E S - G o t o s t e p 1 5 ,
NO Go to step 20.