Fan Motor Test; Thermostat Test - Honda Civic 2002-2003 Service Manual

Cooling System
Fan Motor Test
,. Disconnect the 2P connectors from the radiator fan
motor and condenser fan motor.
Terminal side of
male terminals
2. Test the motor by connecting battery power to the
B terminal and ground to the A terminal.
3. If the motor fails to run or does not run smoothly,
replace it.
10-4
Thermostat Test
Replace the thermostat if it is open at room
temperature.
To test a closed thermostat:
1. Suspend the thermostat (A) in a container of water.
Do not let the thermometer (B) touch the bottom of
the hot container.
B~
A
2. Heat the water, and check the temperature with a
thermometer. Check the temperature at which the
thermostat first opens, and at which it is fully open.
3. Measure the lift height of the thermostat when it is
fully open.
STANDARD THERMOSTAT
Lift height:
Starts opening:
Fully open:
above S.O mm (0.31 in.)
169-176°F (76-S0°C)
194°F (90°C)