Toyota 2002 Camry - Page 375

1608X–01
A62969
A30519
P01924
16–18
–COOLING COOLING FAN SYSTEM (1MZ–FE)
1837Author: Date:
2002 CAMRY REPAIR MANUAL (RM881U)
INSPECTION
1. COOLING FAN RELAY
COOLING FAN RELAY NO.3
(a) Inspect the cooling fan relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
(3) Apply battery voltage across terminals 1 and 2.
(4) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
2. COOLING FAN RELAY NO.2
(a) Inspect the cooling fan relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 4.
If there is no continuity, replace the relay.
(3) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
(4) Apply battery voltage across terminals 1 and 2.
(5) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
3. TEMPERATURE DETECT SWITCH
(a) Using an ohmmeter, check that there is continuity be-
tween the terminals when the coolant temperature is
above 98C (208F).
If there is no continuity, replace the switch.
(b) Check that there is no continuity, between terminals when
the coolant temperature is below 88C (190F).
If there is continuity, replace the switch.