Toyota 4A-FE Repair Manual page 186

C0-22
ON
COOLING SYSTEM - Electric Cooling Fan
C00822 C00517
ON-VEHICLE INSPECTION
Low Coolant Temperature
(below 83°C (181°F))
1. TURN IGNITION SWITCH ON
Check that the fan does not rotate .
2.
If it rotates, check the fan relay and temperature switch,
and check for
a
separated connector or severed wire bet-
ween the relay and temperature switch.
DISCONNECT TEMPERATURE SWITCH CONNECTOR
Check that the fan rotates.
If it does not, check the fan relay, fan motor, ignition relay
and fuse, and check for a short circuit between the fan
relay and temperature switch.
C00618 C00553COOS19
3 .
CONNECT TEMPERATURE SWITCH CONNECTOR
High Coolant Temperature
(above 93°C (199°F))
4. START ENGINE
(a) Raise engine coolant temperature to above 93°C
(199°F) .
(b)
Check that the fan rotates .
.__ _ _ _ _ _ _ _ _ _ _ _ _ """"'c"'""o""""oa___.1 7
(c) Check that the fan stops when coolant temperature
is below 83°C (181°F}.
If it doesn't replace the temperature switch.