Toyota 2VZ-FE Manual page 202

CO–16
Check for
Continuity
Voltage
Voltage
Resistance
Continuity
COOLING SYSTEM
Tester connection
2–Ground
3–Ground
4–Ground
5–7
6–Ground
2. INSPECT WATER TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance:
If resistance is not as specified, replace the sensor.
3. INSPECT ENGINE MAIN RELAY (See page CH–17)
4. INSPECT NO.1 COOLING FAN RELAY ("FAN NO.1")
A. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity
(b) Check that there is continuity between terminals 3 and
If continuity is not as specified, replace the relay.
B. Inspect relay operation
(a) Apply battery voltage across terminal 1 and 2.
(b) Using an ohmmeter, check that there is no continuity
If operation is not as specified, replace the relay.
– Electric Cooling Fans
Condition
–
Ignition switch ON
Ignition switch ON
80°C (176°F)
90°C (194°F)
Coolant temp.
95°C (203°F)
–
Approx. 1.53 k at 80°C (176°F)
Approx. 1.18 k at 90°C (194°F)
Approx. 1.03 k at 95°C (203°F)
between terminals 1 and 2.
4.
between terminals 3 and 4.
Specified valve
Continuity
Battery voltage
Battery voltage
Approx. 1.53 k
Approx. 1.18 k
Approx. 1.03 k
Continuity