Honda 2004 Odyssey, Service Manual

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＊０１
Ｓ０Ｘ４Ａ００Ｋ７７１０００９０４０１ＦＡＡＴ００ Ｓ０Ｘ４ＡＺ６Ｋ７７１０００９１４９１ＦＡＡＴ００
DTC P0401: DTC P1491 ’99-00, ’02-04 Models:
YES
NO
YES
NO
YES
NO
11-247 11-247
EGR System
EGR VALVE 6P CONNECTOR
GND EGR
EGR System Insufficient Flow EGR
Valve Insufficient Lift
1. Reset the PCM (see page 11-4).
2. Test-drive under these conditions:
• Without any electrical load.
• Decelerate from 55 mph (88 km/h) for at least 5
seconds.
3.
or the HDS.
Clean the intake manifold EGR port with
carburetor cleaner. Clean the passage inside the
EGR valve with carburetor cleaner, or replace the
EGR valve.
Intermittent failure, go to step 4.
4. Turn the ignition switch OFF.
5. Disconnect the EGR valve 6P connector.
6. Connect the battery positive terminal to EGR valve
connector terminal No. 4.
7. Start the engine and let it idle, then connect the
battery negative terminal to EGR valve connector
terminal No. 6.
Intermittent failure, system is OK at this
time.
Clean the intake manifold EGR port with
caburetor cleaner. Clean the passage inside the
EGR valve with carburetor cleaner, or replace the
EGR valve.
NOTE: Information marked with an asterisk ( ) applies
to ’02-04 models.
1. Reset the PCM (see page 11-4).
2. Start the engine. Hold the engine at 3,000 rpm with
no load (in Park or neutral) until the radiator fan
comes on.
3. Test-drive the vehicle under load for about 10
minutes. Try to keep the engine speed in the
1,700
2,500 rpm range.
4. Check for a Temporary DTC with the scan tool or
the HDS.
Go to step 5.
Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the EGR valve and at the PCM.
5. Turn the ignition switch OFF.
6. Disconnect the EGR valve 6P connector.
7. Start the engine, and let it idle.
(cont’d)
Terminal side of male terminals
Is T empor ar y DT C P0401 indicated?
Is T empor ar y DT C P1491 indicated?
03/07/29 09:24:47 61S0X050_110_0247
DTC Troubleshooting
Check for a Temporary DTC with the scan tool
Does the engine stall or r un r ough?