Honda Odyssey 2004. Manual — part 408
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24
YES
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21-108
Climate Control
Recirculation Control Motor Circuit Troubleshooting (cont’d)
GRN/RED
GRN/WHT
CLIMATE CONTROL UNIT CONNECTOR B (20P)
GRN/RED
GRN/WHT
CLIMATE CONTROL UNIT CONNECTOR B (20P)
GRN/RED
GRN/WHT
GRN/WHT
GRN/RED
RECIRCULATION CONTROL MOTOR
7P CONNECTOR
CLIMATE CONTROL UNIT CONNECTOR B (20P)
8. Check for continuity between the No. 3 and No. 4
terminals of climate control unit connector B (20P)
and body ground individually.
Repair any short to body ground in the wire
(s) between the climate control unit and the
recirculation control motor.
Go to step 9.
9. 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
recirculation 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 10.
10. Turn the ignition switch off.
11. Check for continuity between the following
terminals of climate control unit connector B (20P)
and the recirculation control motor 7P connector.
20P:
7P:
No. 3
No. 5
No. 4
No. 7
Check for loose wires or poor connections at
climate control unit connector B (20P) and at the
recirculation 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 recirculation control
motor.
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 ther e any voltage?
Is ther e continuity?
03/07/29 10:13:30 61S0X050_210_0109
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21-109
CLIMATE CONTROL UNIT CONNECTOR B (26P)
GRN/RED
GRN/WHT
CLIMATE CONTROL UNIT CONNECTOR B (26P)
GRN/WHT
GRN/RED
CLIMATE CONTROL UNIT CONNECTOR B (26P)
RECIRCULATION CONTROL MOTOR
7P CONNECTOR
GRN/WHT
GRN/RED
GRN/WHT
GRN/RED
12. Disconnect climate control unit connector B (26P).
13. Check for continuity between the No. 23 and No. 24
terminals of climate control unit connector B (26P)
and body ground individually.
Repair any short to body ground in the wire
(s) between the climate control unit and the
recirculation control motor.
Go to step 14.
14. Turn the ignition switch ON (II), and check the same
terminals for voltage.
Repair any short to power in the wire
between the climate control unit and the
recirculation 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 15.
15. Turn the ignition switch OFF.
16. Check for continuity between the following
terminals of climate control unit connector B (26P)
and the recirculation control motor 7P connector.
26P:
7P:
No. 23
No. 5
No. 24
No. 7
Check for loose wires or poor connections at
climate control unit connector B (26P) and at the
recirculation 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 recirculation control
motor.
17. Remove the recirculation contol motor (see page
21-39).
18. Check the recirculation control linkage and doors
for smooth movement.
Replace the recirculation control motor.
Repair the recirculation control linkage or
doors.
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 ther e any voltage?
Is ther e continuity?
Do the r ecir culation contr ol linkage and door s
move smoothly?
03/07/29 10:13:31 61S0X050_210_0110
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S0X4A10G10100012062FAAT10
YES
NO
YES
NO
YES
NO
21-110
Climate Control
A/C Pressure Switch Circuit Troubleshooting
A/C PRESSURE SWITCH 4P CONNECTOR
BLU/RED
A/C PRESSURE SWITCH
NOTE:
• Do not use this troubleshooting procedure if any of
the following items are operative; condenser fan,
radiator fan, A/C compressor, or if the heater is
inoperative. Refer to the symptom troubleshooting
index.
• Before performing symptom troubleshooting, check
for powertrain DTCs (see page 11-3).
1. Disconnect the A/C pressure switch 4P connector.
2. Turn the ignition switch ON (II).
3. Measure the voltage between the No. 1 terminal of
the A/C presure switch 4P connector and body
ground.
Go to step 4.
Repair open in the wire between the A/C
diode A, the PCM and the A/C pressure switch.
4. Turn the ignition switch OFF.
5. Check for continuity between the No. 1 and No. 4
terminals of the A/C pressure switch.
Go to step 6.
Go to step 13.
6. Reconnect the A/C pressure switch 4P connector.
Go to step 10.
Go to step 7.
7. Disconnect climate control unit connector B (20P).
8. Turn the ignition switch ON (II).
Wire side of female terminals
Is ther e batter y voltage?
Is ther e continuity?
Does the vehicle have a Navigation System?
03/07/29 10:13:32 61S0X050_210_0111
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YES
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YES
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NO
21-111
RED/WHT
CLIMATE CONTROL UNIT CONNECTOR B (20P)
CLIMATE CONTROL UNIT CONNECTOR B (26P)
RED/WHT
9. Measure the voltage between the No. 2 terminal of
climate control unit connector B (20P) and body
ground.
Check for loose wires or poor connections at
climate control unit connector B (20P) and at the
A/C pressure switch 4P 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 open in the wire between the climate
control unit and the A/C pressure switch.
10. Disconnect climate control unit connector B (26P).
11. Turn the ignition switch ON (II).
12. Measure the voltage between the No. 4 terminal of
climate control unit connector B (26P) and body
ground.
Check for loose wires or poor connections at
climate control unit connector B (26P) and at the
A/C pressure switch 4P 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 open in the wire between the climate
control unit and the A/C pressure switch.
13. Check for proper A/C system pressure.
Replace the A/C pressure switch.
Repair the A/C pressure problem.
Wire side of female terminals
Wire side of female terminals
Is ther e batter y voltage?
Is ther e batter y voltage?
Is the pr essur e within specif ications?
03/07/29 10:13:32 61S0X050_210_0112
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