100 Wagon L5-2309cc 2.3L SOHC (NF) (1989)
Coolant Temperature Sensor / Switch HVAC: Locations
Some models will have a coolant temperature sensor on the small coolant hose between the cylinder head and the heat exchanger. On vehicles without
this sensor, view the A/C control head. Channel 6 will display a code of 255 (open circuit).