Radiator Fan Switch Test - Honda 2004 Odyssey Service Manual

6. Connect a jumper wire between radiator fan switch
B 2P connector terminals No. 1 and No. 2.
RADIATOR FAN SWITCH B 2P CONNECTOR
BLK
JUMPER
WIRE
Wire side of female terminals
7. Turn the ignition switch ON (II).
Do the radiator and condenser f ans run?
YES Replace radiator fan switch B.
NO Repair an open in the wire between radiator
fan switch B 2P connector terminal No. 2 and
ground G101.
BLU/RED

Radiator Fan Switch Test

1. Remove radiator fan switch A from the water
passage and radiator fan switch B from the cylinder
head (see page 10-4).
2. Suspend each radiator fan switch (A) in a container
of coolant as shown.
B
WATER
3. Heat the coolant and check the temperature with a
thermometer (B). Do not let the thermometer touch
the bottom of the hot container.
4. Measure the continuity between terminal (No. 1)
and terminal (No. 2) according to the table.
Operation Temperature
196 203°F
ON
(91 95°C)
SWITCH
5 15°F (3 8°C) lower
A
than the temperature
OFF
when it goes on
205 216°F
ON
(96 102°C)
SWITCH
5 18° (3 10°) lower
B
OFF than the temperature
when it goes on
5. Replace, if necessary, and install the radiator fan
switches.
1
2
A
Terminal
A B
10-25 10-25