Honda 2004 Odyssey Service Manual page 1657

Rear Heater-A/C
Rear Blower Motor Circuit Troubleshooting (cont'd)
9. Connect the No. 1 terminal of the rear blower
motor main relay 6P connector to the No. 3
terminal of the rear blower motor high relay 4P
connector with a jumper wire.
REAR BLOWER MOTOR MAIN RELAY
6P CONNECTOR
BLU/YEL
JUMPER
WIRE
BLK
REAR BLOWER MOTOR HIGH RELAY
4P CONNECTOR
Does the blower motor run?
YES Go to step 10.
NO Repair open in the BLK wire between the rear
blower motor low, middle, and high relays or poor
ground at G582.
10. Turn the ignition switch ON (II).
11. Measure the voltage between the No. 6 terminal of
the rear blower motor main relay 6P connector and
body ground.
REAR BLOWER MOTOR MAIN RELAY
6P CONNECTOR
Wire side of female terminals
Is there battery voltage?
YES Go to step 12.
NO Repair open in the wire between the No. 3
fuse in the driver's under-dash fuse/relay box and
the rear blower motor main relay.
12. Turn the ignition switch OFF.
21-126
Wire side of
female terminals
Wire side of
female terminals
BLK/YEL
13. Disconnect the rear heater-A/C main switch 10P
connector.
14. Check for continuity between the No. 8 terminal of
the rear heater-A/C main switch 10P connector and
body ground.
REAR HEATER-A/C MAIN SWITCH
10P CONNECTOR
Wire side of female terminals
Is there continuity?
YES 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).
NO Check for an open in the wire between the
rear heater-A/C main switch and body ground. If
the wire is OK, check for poor ground at G401.
15. Disconnect the jumper wire.
16. Disconnect the rear blower motor 2P connector.
17. Measure the voltage between the No. 1 terminal of
the rear blower motor 2P connector and body
ground.
REAR BLOWER MOTOR 2P CONNECTOR
Wire side of female terminals
Is there battery voltage?
YES Replace the rear blower motor.
NO Repair open in the wire between the No. 60
fuse in the multi-fuse/relay box ('99-02 models), or
the No. 80 fuse in the under-hood sub fuse box ('03-
04 models) and the rear blower motor.
BLK
RED