Honda 2004 Odyssey, Service Manual

Page: 1562 / 2459

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21-31
Radiator and Condenser Fan High Speed Circuit Troubleshooting
A/C DIODE C
1 2
1
2
BLU/RED
A/C DIODE C 2P SOCKET
GRN/YEL
A/C PRESSURE SWITCH 4P CONNECTOR
A/C PRESSURE SWITCH 4P CONNECTOR
BLU/RED
BLU/RED
NOTE:
• Do not use this troubleshooting procedure if only one
fan is inoperative, or if the compressor is inoperative.
Refer to the symptom troubleshooting index.
• Before performing symptom troubleshooting, check
for powertrain DTCs (see page 11-3).
1. Remove A/C diode C from the right side of dash.
2. Check for current flow in both directions between
the No. 1 and No. 2 terminals of A/C diode C.
Go to step 3.
Replace A/C diode C.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No. 2 terminal of
A/C diode C 2P socket and body ground.
Go to step 5.
Repair open in the wire between the radiator
fan relay and A/C diode C.
5. Turn the ignition switch OFF.
6. Reinstall A/C diode C.
7. Disconnect the A/C pressure switch 4P connector.
8. Turn the ignition switch ON (II).
9. Measure the voltage between the No. 2 terminal of
the A/C pressure switch 4P connector and body
ground.
Go to step 10.
Repair open in the wire between A/C diode C
and the A/C pressure switch.
10. Turn the ignition switch OFF
11. Check for continuity between the No. 1 and No. 3
terminals of the A/C pressure switch 4P connector.
Replace the A/C pressure switch.
Repair open in the wire between the A/C
pressure switches A and B.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e cur r ent f low in only one dir ection?
Is ther e batter y voltage?
Is ther e batter y voltage?
Is ther e continuity?
03/07/29 10:10:29 61S0X050_210_0032