Honda Odyssey 2004. Manual — part 135
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*01
S0X4A00A20336334854FEAT00
Special Tools Required
11-238
Intake Air System
Intake Air Bypass Control Thermal Valve Test
A
A973X-041-XXXXX
Vacuum pump gauge, 0
30 in.Hg
A973X-041-XXXXX
1. Start the engine, and let it idle.
NOTE: Engine coolant temperature must be below
104°F (40°C).
2. Remove the vacuum hose (A) from the intake pipe,
and connect a vacuum gauge to the hose.
3. Raise and lower the engine speed, and make sure
the vacuum gauge reading changes as the rpm
changes.
If the vacuum reading changes, go to step 4.
If the vacuum reading does not change, check for
these problems:
• Misrouted, leaking, broken, or clogged intake air
bypass control thermal system vacuum lines.
• A cracked or damage intake air bypass control
thermal valve.
4. Hold the engine at 3,000 rpm with no load (in Park
or neutral) until the radiator fan comes on, then let
it idle.
5. Raise and lower the engine speed, and make sure
the vacuum gauge reading does not change as the
rpm changes.
If the vacuum reading changes, check for these
problems:
• Misrouted, leaking, broken, or clogged intake air
bypass control thermal system.
• A cracked or damaged intake air bypass control
thermal valve.
03/07/29 09:24:41 61S0X050_110_0238
01
02
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11-239
Heated Air Induction System Test
A
B
B
A
1. Remove the air cleaner housing cover and air
cleaner element.
2. Check the air valve (A). The door should be open
when the temperature at the wax element (B) is
below 32°F (0°C).
• If the valve is open, go to step 3.
• If the valve is not open, check the shaft for
binding or sticking. If it is OK, replace the air
cleaner housing.
3. Start the engine. Hold the engine at 3,000 rpm with
no load (in Park or neutral) until the radiator fan
comes on.
4. Check the air valve (A). The air valve should be
closed when the temperature at the wax element
(B) is above 50°F (10°C).
• If the air valve is closed, the heated air induction
system is OK.
• If the air valve is not closed, check the shaft for
binding or sticking. If it is OK, replace the air
cleaner housing.
03/07/29 09:24:41 61S0X050_110_0239
*01
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11-240
Intake Air System
Air Cleaner Element Replacement
A
B
E
B
F
G
C
D
1. Make sure you have the anti-theft codes for the radio and the navigation system (if equipped), then write down the
frequencies for the radio’s preset buttons.
2. Remove the cable clamp (A) from the air cleaner housing cover (B).
3. Remove the battery negative terminal (C) and screw (D).
4. Remove the cover (E).
5. Remove the air cleaner element (F) from the air cleaner housing (G).
6. Install the parts in the reverse order of removal.
7. Do the PCM idle learn procedure (see page 11-202).
8. Enter the radio and the navigation system (if equipped) anti-theft codes, then enter the radio presets, set the clock.
03/07/29 09:24:42 61S0X050_110_0240
01
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11-241
Air Cleaner Housing Disassembly/Reassembly
A
B
C
2.9 N·m
(0.3 kgf·m, 2.2 lbf·ft)
2.9 N·m
(0.3 kgf·m, 2.2 lbf·ft)
1. Drain the coolant (see page 10-13).
2. Remove the air cleaner housing.
3. Remove the cover (A) and the radiator (B) from the air cleaner housing (C).
4. Install the parts in the reverse order of removal.
5. Fill the radiator with coolant (see page 10-13).
03/07/29 09:24:42 61S0X050_110_0241
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