GS 400 V8-4.0L (1UZ-FE) (1999)
/Page-636001.png)
Coolant Temperature Sensor / Switch HVAC: Testing and Inspection
INSPECT ECT SWITCH
a. Using an ohmmeter, check that no continuity exists between the terminals when the coolant temperature is above 100°C (212 °F).
If continuity exists, replace the switch.
b. Using an ohmmeter, check that continuity exists between the terminals when the coolant temperature is below 91°C (196°F).
If there no continuity exists, replace the switch.
