Honda Odyssey 2004. Manual — part 414
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*01
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21-132
Rear Heater-A/C
Rear Blower Motor High Speed Circuit Troubleshooting - Hot and/or Cold
(cont’d)
REAR BLOWER RESISTOR 5P CONNECTOR
REAR BLOWER MOTOR MAIN RELAY
6P CONNECTOR
GRN/YEL
GRN/YEL
REAR BLOWER MOTOR MAIN RELAY
6P CONNECTOR
BRN/YEL
BRN/YEL
REAR BLOWER MOTOR HIGH RELAY
4P CONNECTOR
REAR BLOWER MOTOR HIGH RELAY
4P CONNECTOR
BLK
9. Check for continuity between the No. 2 terminal of
the rear blower resistor 5P connector and the No. 4
terminal of the rear blower motor main relay 6P
connector.
Go to step 10.
Repair open in the wire between the rear
blower resistor and the rear blower motor main
relay.
10. Remove the rear blower motor high relay, and test
it (see page 22-88).
Go to step 11.
Replace the rear blower motor high relay.
11. Check for continuity between the No. 2 terminal of
the rear blower motor main relay 6P connector and
the No. 1 terminal of the rear blower motor high
relay 4P connector.
Go to step 12.
Repair open in the wire between the rear
blower motor main relay and the rear blower motor
high relay.
12. Check for continuity between the No. 3 terminal of
the rear blower motor high relay 4P connector and
body ground.
Go to step 13.
Check for an open in the wire between the
rear blower motor high relay and body ground. If
the wire is OK, check for poor ground at G582.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is the r elay OK ?
Is ther e continuity?
Is ther e continuity?
03/07/29 10:14:15 61S0X050_210_0133
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21-133
REAR BLOWER MOTOR HIGH RELAY
4P CONNECTOR
BLK/YEL
REAR BLOWER MOTOR HIGH RELAY
4P CONNECTOR
REAR HEATER-A/C MAIN SWITCH
10P CONNECTOR
BLU/BLK
BLU/BLK
REAR BLOWER MOTOR HIGH RELAY
4P CONNECTOR
REAR HEATER-A/C PASSENGER’S
CONTROL PANEL 10P CONNECTOR
BLU/BLK
BLU/BLK
13. Turn the ignition switch ON (II).
14. Measure the voltage between the No. 2 terminal of
the rear blower motor high relay 4P connector and
body ground.
Go to step 15.
Repair open in the wire between the No. 3
fuse in the driver’s under-dash fuse/relay box and
the rear blower motor high relay.
15. Turn the ignition switch OFF.
16. Disconnect the rear heater-A/C main switch 10P
connector and the rear heater-A/C passenger’s
control panel 10P connector.
17. Check for continuity between the No. 4 terminal of
the rear blower motor high relay 4P connector and
the No. 9 terminal of the rear heater-A/C main
switch 10P connector, and between the No. 4
terminal of the rear blower motor high relay 4P
connector and the No. 4 terminal of the rear heater-
A/C passenger’s control panel 10P connector.
Go to step 18.
Repair open in the wire between the rear
blower motor high relay and the rear heater-A/C
main switch, or between the rear blower motor
high relay and the rear heater-A/C passenger’s
control panel.
(cont’d)
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e batter y voltage?
Is ther e continuity?
03/07/29 10:14:16 61S0X050_210_0134
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S0X4A12G44200040312FAAT00
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21-134
21-134
Rear Heater-A/C
Rear Blower Motor High Speed
Circuit Troubleshooting - Hot and/
or Cold (cont’d)
Rear Mode Control Motor Circuit
Troubleshooting
REAR HEATER-A/C MAIN SWITCH
10P CONNECTOR
REAR BLOWER MOTOR MAIN RELAY
6P CONNECTOR
YEL/BLU
YEL/BLU
REAR HEATER-A/C PASSENGER’S
CONTROL PANEL 10P CONNECTOR
REAR BLOWER MOTOR MAIN RELAY
6P CONNECTOR
YEL/BLU
YEL/BLU
BLK/YEL
REAR MODE CONTROL MOTOR 7P CONNECTOR
18. Check for continuity between the No. 3 terminal of
the rear blower motor main relay 6P connector and
the No. 4 terminal of the rear heater-A/C main
switch 10P connector, and between the No. 3
terminal of the rear blower motor main relay 6P
connector and the No. 8 terminal of the rear heater-
A/C passenger’s control panel 10P connector.
Test the rear heater-A/C main switch (see
page 21-140) and the rear heater-A/C passenger’s
control panel (see page 21-141). Replace the switch
as needed.
Repair open in the wire between the rear
blower motor main relay and the rear heater-A/C
main switch, or between the rear blower motor
main relay and the rear heater-A/C passenger’s
control panel.
1. Check the No. 3 (7.5A) fuse in the driver’s under-
dash fuse/relay box.
Go to step 2.
Replace the fuse and recheck.
2. Remove the rear blower unit (see page 21-142).
3. Disconnect the rear mode control motor 7P
connector.
4. Turn the ignition switch ON (II).
5. Measure the voltage between the No. 2 terminal of
the rear mode control motor 7P connector and
body ground.
Go to step 6.
Repair open in the wire between the No. 3
fuse in the driver’s under-dash fuse/relay box and
the rear mode control motor.
6. Turn the ignition switch OFF.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is the f use OK ?
Is ther e batter y voltage?
03/07/29 10:14:16 61S0X050_210_0135
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21-135
REAR MODE CONTROL MOTOR 7P CONNECTOR
BLK
REAR MODE CONTROL MOTOR RELAY 5P SOCKET
BLK/YEL
GRN/WHT
GRN/RED
REAR MODE CONTROL MOTOR 7P CONNECTOR
7. Check for continuity between the No. 1 terminal of
the rear mode control motor 7P connector and
body ground.
Go to step 8.
Check for an open in the wire between the
rear mode control motor and body ground. If the
wire is OK, check for ground at G582.
8. Test the rear mode control motor (see page 21-139).
Go to step 11.
Go to step 9.
9. Remove the rear mode control motor (see page 21-
139).
10. Check the rear mode control linkage and doors for
smooth movement.
Replace the rear mode control motor.
Repair the rear mode control linkage or
doors.
11. Remove the rear mode control motor relay, and
test it (see page 22-88).
Go to step 12.
Replace the rear mode control motor relay.
12. Turn the ignition switch ON (II).
13. Measure the voltage between the No. 5 terminal of
the rear mode control motor relay 5P socket and
body ground.
Go to step 14.
Repair open in the wire between the No. 3
fuse in the driver’s under-dash fuse/relay box and
the rear mode control motor relay.
14. Turn the ignition switch OFF.
15. Check for continuity between the No. 3 and No. 4
terminals of the rear mode control motor 7P
connector and body ground individually.
Repair any short to body ground in the wire
(s) between the rear mode control motor and the
rear mode control motor relay.
Go to step 16.
(cont’d)
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is the r ear mode contr ol motor OK ?
Do the r ear mode contr ol linkage and door s move
smoothly?
Is the r elay OK ?
Is ther e batter y voltage?
Is ther e continuity?
03/07/29 10:14:17 61S0X050_210_0136
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