Honda 2004 Odyssey Service Manual page 1661

Rear Heater-A/C
Rear Blower Motor Middle Speed Circuit Troubleshooting (cont'd)
7. Turn the ignition switch ON (II).
8. Measure the voltage between the No. 5 terminal of
the rear blower motor middle relay 5P socket and
body ground.
REAR BLOWER MOTOR MIDDLE RELAY 5P SOCKET
Is there battery voltage?
YES Go to step 9.
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 middle relay.
9. Turn the ignition switch OFF.
10. Disconnect the rear heater-A/C main switch 10P
connector and the rear heater-A/C passenger's
control panel 10P connector.
21-130
BLK/YEL
11. Check for continuity between the No. 3 terminal of
the rear blower motor middle relay 5P socket and
the No. 3 terminal of the rear heater-A/C main
switch 10P connector, and between the No. 3
terminal of the rear blower motor middle relay 5P
socket and the No. 3 terminal of the rear heater-A/C
passenger's control panel 10P connector.
REAR BLOWER MOTOR MIDDLE RELAY 5P SOCKET
RED/
BLU
REAR HEATER-A/C MAIN SWITCH
10P CONNECTOR
Wire side of female terminals
REAR BLOWER MOTOR MIDDLE RELAY 5P SOCKET
RED/
BLU
REAR HEATER-A/C PASSENGER'S
CONTROL PANEL 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). Replace the switch
as needed.
NO Repair open in the wire between the rear
blower motor middle relay and the rear heater-A/C
main switch, or between the rear blower motor
middle relay and the rear heater-A/C passenger's
control panel.
RED/BLU
RED/BLU