Table of Contents
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Cooling System
Component Location Index (cont'd)
DOWEL PIN
WATER PUMP
Inspection, page 10-12
Replacement, page 10-12
10-4
RADIATOR FAN SWITCH B
GASKET
O-RING
GASKETS
O-RING
EXHAUST GAS RECIRCULATION
(EGR) VALVE
COOLANT TEMPERATURE
GAUGE SENDING UNIT
(1999-2000 models)
Test, page 10-9
ENGINE COOLANT
TEMPERATURE (ECT)
SENSOR
O-RINGS
RADIATOR FAN SWITCH A
CONNECTING PIPE
O-RING
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Chapters
Table of Contents
Troubleshooting
Need help?
Do you have a question about the 2004 Odyssey and is the answer not in the manual?
Questions and answers
condenser and radiator fans trouble shoot
To troubleshoot the condenser and radiator fans on a 2004 Honda Odyssey, follow these steps:
1. Check Fuse No. 3 (7.5A) in the driver’s under-dash fuse/relay box:
- If blown, replace the fuse and recheck.
- If OK, continue to step 2.
2. Test the Fan Control Relay:
- Remove it from the ABS relay box and check for continuity.
- If faulty, replace the relay.
- If OK, proceed to step 3.
3. Check for Wiring Issues:
- Inspect for open circuits between the fan control relay and radiator fan relay.
- Also check for poor ground at G201.
4. Check Voltage at Fan Control Relay Socket (Terminal No. 5):
- With ignition ON, there should be battery voltage.
- If no voltage, repair the open wire from Fuse No. 3 to the fan control relay.
5. Check Ground Connections:
- Inspect the wire between the radiator fan and body ground.
- Verify ground at G201 is good.
6. Check Condenser Fan High-Speed Circuit:
- If the condenser fan doesn’t run at high speed when the engine is hot or A/C is on, check:
- Fuse No. 3 (7.5A)
- Ground at G201
- Clean/tight connectors
7. Do Not Use This Procedure If:
- Only one fan is not working
- The compressor is inoperative
These steps help identify electrical faults in the fan circuits. Use appropriate tools to test continuity, voltage, and ground.
This answer is automatically generated
i can not find ground connections to trouble shoot Cooling and condenser fans
To locate the ground connections for troubleshooting the cooling and condenser fans on a 2004 Honda Odyssey:
1. Check ground G201 for both radiator and condenser fan circuits.
2. For heater control panel issues, check ground G401.
3. Verify continuity between the components and body ground.
4. Ensure connectors are clean and tight.
If no continuity, inspect the wire between the component and the respective ground point (G201 or G401) for damage or poor connection.
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I need the water pump replacement steps please.
The water pump replacement steps for a 2004 Honda Odyssey are:
1. Drain the engine coolant.
2. Remove the timing belt.
3. Remove the timing belt tensioner.
4. Remove the water pump by removing five bolts.
5. Inspect, repair, and clean the O-ring groove and mating surface on the cylinder block.
6. Install the water pump with a new O-ring in the reverse order of removal.
7. Refill the radiator with engine coolant and bleed air from the cooling system.
8. Clean up any spilled engine coolant.
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