Honda Odyssey 2004. Manual — part 405
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*01
*02
S0X4A81K71100087120FAAT00
DTC indicator L:
YES
NO
YES
NO
21-96
Climate Control
DTC Troubleshooting (cont’d)
BLU/WHT
BLU/BLK
YEL/
GRN
BLU/GRN
LT GRN/BLK
GRN/YEL
GRN/
BLK
CLIMATE CONTROL UNIT CONNECTOR B (20P)
BLU/WHT
BLU/BLK
YEL/
GRN
BLU/GRN
LT GRN/BLK
GRN/YEL
GRN/
BLK
CLIMATE CONTROL UNIT CONNECTOR B (20P)
An Open or Short in the
Mode Control Motor Circuit
1. Disconnect the mode control motor 7P connector.
2. Disconnect climate control unit connector B (20P).
3. Check for continuity between body ground and
climate control unit connector B (20P) terminals
No. 5, 6, 11, 17, 18, 19 and 20 individually.
Repair any short to body ground in the
wire(s) between the climate control unit and the
mode control motor.
Go to step 4.
4. Turn the ignition switch ON (II), and check the same
terminals for voltage.
Repair any short to power in the wire(s)
between the climate control unit and the mode
control motor. This short may also damage the
climate control unit. Repair the short to power
before replacing the climate control unit.
Go to step 5.
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e any voltage?
03/07/29 10:12:58 61S0X050_210_0097
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*03
*01
S0X4A80K71100087120FAAT00
YES
NO
YES
NO
YES
NO
YES
NO
DTC indicator L:
21-97
21-97
BLU/WHT
BLU/BLK
YEL/GRN
BLU/GRN
LT GRN/BLK
GRN/YEL
GRN/
BLK
LT GRN/
BLK
GRN/YEL
BLU/GRN
BLU/BLK
BLU/WHT
YEL/GRN
MODE CONTROL MOTOR 7P CONNECTOR
CLIMATE CONTROL UNIT CONNECTOR B (20P)
GRN/BLK
CLIMATE CONTROL UNIT CONNECTOR B (26P)
BLU/BLK
BLU/WHT
BLU/GRN
LT GRN/BLK
GRN/BLK
YEL/GRN
GRN/YEL
5. Turn the ignition switch OFF, and check for
continuity between following terminals of climate
control unit connector B (20P) and the mode control
motor 7P connector.
20P:
7P:
No. 5
No. 1
No. 6
No. 2
No. 11
No. 7
No. 17
No. 3
No. 18
No. 4
No. 19
No. 5
No. 20
No. 6
Check for loose wires or poor connections at
climate control unit connector B (20P) and at the
mode control motor 7P connector. If the
connections are good, substitute a known-good
mode control motor, and recheck. If the symptom/
indication goes away, replace the original mode
control motor. If the symptom/indication continues,
substitute a known-good climate control unit, and
recheck. If the symptom/indication goes away,
replace the original climate control unit.
Repair any open in the wire(s) between the
climate control unit and the mode control motor.
1. Disconnect the mode control motor 7P connector.
2. Test the mode control motor (see page 21-38).
Go to step 5.
Go to step 3.
3. Remove the mode control motor (see page 21-38).
4. Check the mode control linkage and doors for
smooth movement.
Replace the mode control motor.
Repair the mode control linkage or doors.
5. Disconnect climate control unit connector B (26P).
6. Check for continuity between body ground and
climate control unit connector B (26P) terminals
No. 1, 5, 6, 7, 8, 10 and 11 individually.
Repair any short to body ground in the
wire(s) between the climate control unit and the
mode control motor.
Go to step 7.
(cont’d)
A Problem in the Mode
Control Motor Circuit
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is the mode contr ol motor OK ?
Do the mode contr ol linkage and door s move
smoothly?
Is ther e continuity?
03/07/29 10:12:59 61S0X050_210_0098
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*02
*03
YES
NO
YES
NO
21-98
Climate Control
DTC Troubleshooting (cont’d)
CLIMATE CONTROL UNIT CONNECTOR B (26P)
BLU/BLK
BLU/WHT
BLU/GRN
LT GRN/BLK
GRN/BLK
YEL/GRN
GRN/YEL
GRN/BLK
GRN/YEL
LT GRN/BLK
BLU/GRN
BLU/WHT
GRN/BLK
BLU/BLK
GRN/YEL
LT GRN/BLK
BLU/GRN
BLU/WHT
BLU/BLK
CLIMATE CONTROL UNIT CONNECTOR B (26P)
YEL/GRN
YEL/GRN
MODE CONTROL MOTOR 7P CONNECTOR
7. Turn the ignition switch ON (II), and check the same
terminals for voltage.
Repair any short to power in the wire(s)
between the climate control unit and the mode
control motor. This short may also damage the
climate control unit. Repair the short to power
before replacing the climate control unit.
Go to step 8.
8. Turn the ignition switch OFF, and check for
continuity between following terminals of climate
control unit connector B (26P) and the mode control
motor 7P connector.
26P:
7P:
No. 1
No. 7
No. 5
No. 6
No. 6
No. 5
No. 7
No. 4
No. 8
No. 3
No. 10
No. 2
No. 11
No. 1
Check for loose wires or poor connections at
climate control unit connector B (26P) and at the
mode control motor 7P connector. If the
connections are good, substitute a known-good
climate control unit, and recheck. If the symptom/
indication goes away, replace the original climate
control unit.
Repair any open in the wire(s) between the
climate control unit and the mode control motor.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e any voltage?
Is ther e continuity?
03/07/29 10:13:00 61S0X050_210_0099
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S0X4A10K71100087130FAAT00
*01
S0X4A10K71100087140FAAT00
DTC indicator M:
DTC indicator N:
YES
NO
YES
NO
YES
NO
YES
NO
21-99
21-99
POWER TRANSISTOR 5P CONNECTOR
BLK
A Problem in the Mode
Control Linkage, Doors, or Motor
A Problem in the Blower
Motor Circuit
1. Test the mode control motor (see page 21-38).
Substitute a known-good climate control unit,
and recheck. If the symptom/indication goes away,
replace the original climate control unit.
Go to step 2.
2. Remove the mode control motor (see page 21-38).
3. Check the mode control linkage and doors for
smooth movement.
Replace the mode control motor.
Repair the mode control linkage or doors.
1. Turn the ignition switch ON (II) and turn the blower
fan speed knob to HIGH.
Go to step 2.
Go to step 20.
2. Turn the ignition switch OFF, then disconnect the
power transistor 5P connector.
3. Check for continuity between the No. 5 terminal of
the power transistor 5P connector and body ground.
Go to step 4.
Check for an open in the wire between the
power transistor and body ground. If the wire is OK,
check for poor ground at G401.
(cont’d)
Wire side of female terminals
Is the mode contr ol motor OK ?
Do the mode contr ol linkage and door s move
smoothly?
Does the blower motor r un?
Is ther e continuity?
03/07/29 10:13:00 61S0X050_210_0100
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