Honda 2004 Odyssey Service Manual page 583

EVAP System
DTC Troubleshooting (cont'd)
2. Check the fuel fill cap seal.
Is the f uel f ill cap seal missing or damaged?
YES Replace the fuel fill cap (gray or black
colored cap).
NO The fuel fill cap is OK. Go to step 3.
EVAP Canister Purge Valve Test
3. Disconnect the vacuum hose from the EVAP
canister purge valve (A), and connect a vacuum
pump to the hose.
A
4. Turn the ignition switch ON (II).
5. Apply vacuum to the hose.
Does the valve hold vacuum?
YES The EVAP canister purge valve is OK. Go to
step 11.
NO Go to step 6.
6. Turn the ignition switch OFF.
7. Disconnect the EVAP canister purge valve 2P
connector.
11-274
8. Check for continuity between EVAP canister purge
valve 2P connector terminal No. 1 and body ground.
Is there continuity?
A973X-
YES
041-XXXXX
NO
9. Disconnect PCM connector E (31P).
10. Check for continuity between EVAP canister purge
valve 2P connector terminal No. 1 and body ground.
Is there continuity?
YES
canister purge valve and the PCM (E11).
NO
(see page 11-5). If the symptom/indication goes
away, replace the original PCM.
EVAP CANISTER PURGE VALVE
PCS (RED/YEL)
Wire side of female terminals
Go to step 9.
Replace the EVAP canister purge valve.
EVAP CANISTER PURGE
VALVE 2P CONNECTOR
PCS (RED/YEL)
Wire side of female terminals
Repair short in the wire between the EVAP
Substitute a known-good PCM and recheck