Paseo With A/T

Remove engine coolant temperature switch. Engine coolant temperature switch is located in engine coolant passage near cylinder head. To verify wire colors for proper identification, see appropriate wiring diagram in articles listed below:
- WIRING DIAGRAMS Paseo
- WIRING DIAGRAMS Tercel
  NOTE: Engine coolant temperature switch may be also identified using appropriate illustration in THEORY/OPERATION article.
Place threaded end of engine coolant temperature switch and thermometer in container of water. Attach ohmmeter to switch electrical terminal. Heat water and ensure no continuity exists between switch electrical terminal and switch body when water temperature is less than 208°F (98°C).
Check that continuity exists between switch electrical terminal and switch body when water temperature is greater than 221°F (105°C). Replace engine coolant temperature switch if defective.