7B
A/C Evaporator Thermistor Inspection (K9K Model)
1) Remove A/C evaporator temperature sensor (1) from cooling unit referring to Cooling Unit (Evaporator) Components .
2) Put temperature sensing part (1) of A/C evaporator temperature sensor into iced water whose temperature is below 4 °C (39.2 °F).
3) Connect battery positive terminal (+) to terminal (2) of A/C evaporator temperature sensor connector.
4) Connect battery negative terminal (–) to terminal (3) of A/C evaporator thermistor connector.
5) Keep battery terminals connected to A/C evaporator temperature sensor connector, and then check for continuity between terminal (1) and (3). If there is continuity, replace A/C evaporator temperature sensor with new one.
6) Pull temperature sensing part of A/C evaporator temperature sensor out of iced water and expose it to the air whose temperature is more than 5 °C (41 °F).
7) Keep battery terminals connected to A/C evaporator temperature sensor connector, and then check for continuity between terminal (1) and (3). If there is no continuity, replace A/C evaporator temperature sensor with new one.
[A]: ON [C]: Approximately 4 °C (39.2 °F)
[B]: OFF [D]: Approximately 5 °C (41 °F)