Honda Odyssey 2004. Manual — part 411
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02
S0X4A10G24113614631FEAT00
01
S0X4A81G10500016711KDAT11
Without Navigation System
21-120
21-120
Climate Control
Power Transistor Test
Climate Control Unit Removal and
Installation
POWER TRANSISTOR
A
B
B
A
1. Disconnect the 5P connector from the power
transistor.
2. Measure the resistance between the No. 1 and
No. 4 terminals of the power transistor. It should be
approximately 1.4
1.5 k
.
• If the resistance is within the specifications, go to
step 3.
• If the resistance is not within the specifications,
replace the power transistor.
3. Carefully release the lock tab on the No. 3 terminal
(ORN/BLK) (A) in the 5P connector, then remove the
terminal and insulate it from body ground.
4. Connect a 1.2
3.4 W bulb (B) between the No. 3
and the No. 4 cavity on the 5P connector.
5. Reconnect the 5P connector to the power transistor.
6. Turn the ignition switch ON (II), and check that the
blower motor runs.
• If the blower motor does not run, replace the
power transistor.
• If the blower motor runs, replace the climate
control unit.
1. Remove the center panel with the climate control
unit (see page 20-70).
2. Remove the self-tapping screws and the climate
control unit (A) from the center panel (B).
3. Install the control unit in the reverse order of
removal. After installation, operate the control unit
controls to see whether it works properly.
4. Run the self-diagnosis function to confirm that
there are no problems in the system (see page 21-
67).
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01
S0X4A80G10500016691KDAT12
01
S0X4A81G10500016711MFAT10
With Navigation System
Without Navigation System
21-121
21-121
Climate Control Panel Removal and
Installation
Climate Control Unit Disassembly
and Reassembly
A
B
A
B
C
D
E
F
G
H
I
J
K
L
1. Remove the instrument panel with the climate
control panel (see page 20-70).
2. Remove the self-tapping screws and the climate
control panel (A) from the instrument panel (B).
3. Install the control panel in the reverse order of
removal. After installation, operate the climate
control panel to see whether it works properly.
4. Run the self-diagnosis function to confirm that
there are no problems in the system (see page 21-
67).
1. Remove the fan switch (A) and temperature control
dials (B), then remove the front (C), temperature
control (D) and fan switch (E) panels. Remove the
A/C switch (F), MODE control switch (G), AUTO
switch (H), OFF switch (I), recirculation control
switch (J), front defroster switch (K) and rear
defogger switch (L) buttons.
2. Reassemble the control unit in the reverse order of
removal.
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*01
S0X4A12G44200000000DAAT00
21-122
Rear Heater-A/C
Component Location Index
REAR BLOWER UNIT
REAR BLOWER UNIT COMPONENTS
REAR EVAPORATOR-HEATER UNIT
REAR EVAPORATOR-HEATER UNIT
COMPONENTS
REAR MODE CONTROL MOTOR
REAR HEATER-A/C MAIN SWITCH
REAR HEATER-A/C PASSENGER’S CONTROL PANEL
REAR BLOWER MOTOR LOW RELAY,
REAR BLOWER MOTOR MIDDLE RELAY,
REAR BLOWER MOTOR HIGH RELAY,
REAR BLOWER MOTOR MAIN RELAY,
REAR MODE CONTROL MOTOR RELAY
MULTI-FUSE/RELAY BOX (’99-02 models)
UNDER-HOOD SUB FUSE BOX (’03-04 models)
REAR BLOWER
RESISTOR
HIGH
RELAY
MAIN
RELAY
MODE
CONTROL
MOTOR
RELAY
MIDDLE
RELAY
LOW
RELAY
Removal and Installation, page 21-142
Replacement, page 21-142
Removal and Installation, page 21-143
Replacement, page 21-144
Test, page 21-139
Replacement, page 21-139
Removal and Installation, page 21-140
Test, page 21-140
Removal and Installation, page 21-141
Test, page 21-141
Test, page 22-88
(Located under-hood next to battery)
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S0X4A12G44200000000HBAT01
Symptom
Diagnostic procedure
Also check for
21-123
Symptom Troubleshooting Index
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Rear blower motor does not run at
all.
Rear blower motor circuit
troubleshooting (see page 21-125)
Blown fuse No. 60 (40A) in the multi-
fuse/relay box (’99-02 models), or
the No. 80 (40A) fuse in the under-
hood sub huse box (03’-04 models)
located under-hood next to battery,
and No. 3 (7.5A) in the driver’s
under-dash fuse/relay box
Poor ground at G401 and G582
Cleanliness and tightness of all
connectors
Rear blower motor does not run at
low speed position.
Rear blower motor low speed circuit
troubleshooting (see page 21-127)
Faulty rear blower motor low relay
Faulty rear blower resistor
Open in the wire
Poor ground at G582
Cleanliness and tightness of all
connectors
Rear blower motor does not run at
middle speed position.
Rear blower motor middle speed
circuit troubleshooting (see page 21-
129)
Faulty rear blower motor middle
relay
Faulty rear blower resistor
Open in the wire
Poor ground at G582
Cleanliness and tightness of all
connectors
Rear blower motor does not run
on low, middle, and high for
heating, but runs on high for
cooling.
Rear blower motor high speed
circuit troubleshooting hot and/or
cold (see page 21-131)
Faulty rear blower motor main relay
Open in the wire
Poor ground at G582
Cleanliness and tightness of all
connectors
Rear blower motor does not run at
high speed position for heating.
Rear blower motor high speed
circuit troubleshooting hot and/or
cold (see page 21-131)
Faulty rear blower motor main relay
Faulty rear blower motor high relay
Faulty rear blower resistor
Open in the wire
Poor ground at G582
Cleanliness and tightness of all
connectors
Rear mode control doors do not
change between ceiling vents
(cool) and floor vents (hot).
Rear mode control motor circuit
troubleshooting (see page 21-134)
Blown fuse No. 3 (7.5A) in the
driver’s under-dash fuse/relay box
Faulty rear heater-A/C passenger’s
mode control motor relay
Faulty rear heater-A/C passenger’s
control panel
Open in the wire
Poor ground at G582
Cleanliness and tightness of all
connectors
03/07/29 10:14:08 61S0X050_210_0124
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