Honda Odyssey 2004. Manual — part 387
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*05
*06
*07
YES
NO
YES
NO
YES
NO
YES
NO
21-24
Heating/Air Conditioning
Blower Motor Circuit Troubleshooting (cont’d)
BLU/RED
HEATER FAN SWITCH 7P CONNECTOR
BLK
HEATER FAN SWITCH 7P CONNECTOR
BLOWER MOTOR 2P CONNECTOR
YEL/BLK
19. Turn the ignition switch ON (II).
Go to step 20.
Go to step 27.
20. Turn the ignition switch OFF.
21. Disconnect the jumper wire.
22. Disconnect the heater fan switch 7P connector.
23. Turn the ignition switch ON (II).
24. Measure the voltage between the No. 3 terminal of
the heater fan switch 7P connector and body
ground.
Go to step 25.
Repair open in the wire between the blower
motor and the heater fan switch.
25. Turn the ignition switch OFF.
26. Check for continuity between the No. 1 terminal of
the heater fan switch 7P connector and body
ground.
Replace the heater fan switch.
Check for an open in the wire between the
heater fan switch and body ground. If the wire is
OK, check for poor ground at G401.
27. Disconnect the jumper wire.
28. Disconnect the blower motor 2P connector.
29. Measure the voltage between the No. 1 terminal of
the blower motor 2P connector and body ground.
Replace the blower motor.
Go to step 30.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Does the blower motor r un?
Is ther e batter y voltage?
Is ther e continuity?
Is ther e batter y voltage?
03/07/29 10:10:24 61S0X050_210_0025
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*08
*09
14
YES
NO
YES
NO
YES
NO
YES
NO
21-25
BLOWER MOTOR RELAY 4P SOCKET
BLOWER MOTOR RELAY 4P SOCKET
BLK/YEL
BLOWER MOTOR RELAY 4P SOCKET
BLK
30. Turn the ignition switch OFF.
31. Remove the blower motor relay from the under-
hood fuse/relay box, and test it (see page 22-88).
Go to step 32.
Replace the blower motor relay.
32. Measure the voltage between the No. 4 terminal of
the blower motor relay 4P socket and body ground.
Go to step 33.
Replace the under-hood fuse/relay box.
33. Turn the ignition switch ON (II).
34. Measure the voltage between the No. 1 terminal of
the blower motor relay 4P socket and body ground.
Go to step 35.
Repair open in the wire between the No. 3
fuse in the driver’s under-dash fuse/relay box and
the blower motor relay.
35. Turn the ignition switch OFF.
36. Check for continuity between the No. 2 terminal of
the blower motor relay 4P socket and body ground.
Repair open in the YEL/BLK wire between the
blower motor relay and the blower motor.
Check for an open in the wire between the
blower motor relay and body ground. If the wire is
OK, check for poor ground at G201.
Is the r elay OK ?
Is ther e batter y voltage?
Is ther e batter y voltage?
Is ther e continuity?
03/07/29 10:10:25 61S0X050_210_0026
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−
*01
*02
*03
S0X4A00G24100031411FAAT10
YES
NO
YES
NO
YES
NO
YES
NO
21-26
Heating/Air Conditioning
Heater Control Power and Ground Circuit Troubleshooting
HEATER CONTROL PANEL 22P CONNECTOR
BLK/YEL
WHT/YEL
HEATER CONTROL PANEL 22P CONNECTOR
BLK
HEATER CONTROL PANEL 22P CONNECTOR
1. Check the No. 54 (40A) fuse in the under-hood
fuse/relay box, the No. 3 (7.5A) fuse in the driver’s
under-dash fuse/relay box, and the No. 13 (7.5A)
fuse in the passenger’s under-dash fuse/relay box.
Go to step 2.
Replace the fuse(s), and recheck.
2. Disconnect the heater control panel 22P connector.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 2 terminal of
the heater control panel 22P connector and body
ground.
Go to step 5.
Repair open in the wire between the No. 3
fuse in the driver’s under-dash fuse/relay box and
the heater control panel.
5. Turn the ignition switch OFF.
6. Measure the voltage between the No. 3 terminal of
the heater control panel 22P connector and body
ground.
Go to step 7.
Repair open in the wire between the No. 13
fuse in the passenger’s under-dash fuse/relay box
and the heater control panel.
7. Check for continuity between the No. 9 terminal of
the heater control panel 22P connector and body
ground.
Check for loose wires or poor connections at
the heater control panel 22P connector. If the
connections are good, substitute a known-good
heater control panel, and recheck. If the symptom/
indication goes away, replace the original heater
control panel.
Check for an open in the wire between the
heater control panel and body ground. If the wire is
OK, check for poor ground at G401.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Ar e the f uses OK ?
Is ther e batter y voltage?
Is ther e batter y voltage?
Is ther e continuity?
03/07/29 10:10:26 61S0X050_210_0027
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*01
01
01
S0X4A00G10110249112FAAT00
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
21-27
Radiator and Condenser Fan Low Speed Circuit Troubleshooting
CONDENSER FAN RELAY 4P SOCKET
CONDENSER FAN RELAY 4P SOCKET
JUMPER
WIRE
BLU/YEL
CONDENSER FAN RELAY 4P SOCKET
BLK/YEL
NOTE:
• Do not use this troubleshooting procedure if the
compressor is inoperative. Refer to the symptom
troubleshooting index.
• Before performing symptom troubleshooting, check
for powertrain DTCs (see page 11-3).
1. Check the No. 58 (30A) fuse in the under-hood
fuse/relay box, and the No. 3 (7.5A) fuse in the
driver’s under-dash fuse/relay box.
Go to step 2.
Replace the fuse(s), and recheck.
2. Remove the condenser fan relay from the under-
hood fuse/relay box, and test it (see page 22-88).
Go to step 3.
Replace the condenser fan relay.
3. Measure the voltage between the No. 1 terminal of
the condenser fan relay 4P socket and body ground.
Go to step 4.
Replace the under-hood fuse/relay box.
4. Connect the No. 1 and No. 2 terminals of the
condenser fan relay 4P socket with a jumper wire.
Go to step 5.
Go to step 13.
5. Disconnect the jumper wire.
6. Turn the ignition switch ON (II).
7. Measure the voltage between the No. 4 terminal of
the condenser fan relay 4P socket and body ground.
Go to step 8.
Repair open in the wire between the No. 3
fuse in the driver’s under-dash fuse/relay box and
the condenser fan relay.
(cont’d)
Ar e the f uses OK ?
Is the r elay OK ?
Is ther e batter y voltage?
Does the condenser f an r un?
Is ther e batter y voltage?
03/07/29 10:10:26 61S0X050_210_0028
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