Ambient Temperature Sensor Circuit [11/2021 - ]: Procedure

1. Turn the ignition switch to ON.
2. Check the ambient temperature displayed on the combination meter assembly.
3. Check ambient temperature of the vehicle.
4. Check the difference between the displayed temperature and ambient temperature.

   OK

   The ambient temperature displayed on the combination meter assembly almost matches the actual ambient temperature.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK 

HINT: 

The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

Result: 

NG 

See step  2

1. Turn the ignition switch to OFF.
2. Visually check the ambient temperature sensor(thermistor assembly) for dirt or damage.
   NOTE:

   Do not touch the sensor tip.

   OK

   The ambient temperature sensor(thermistor assembly) is not dirt or damage.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CLEAN THE SENSOR IF THERE IS ANY DIRT 

Result: 

OK 

See step  3

1. Cool the sensor body by spraying water on the ambient temperature sensor(thermistor assembly), etc.
2. Check the ambient temperature displayed on the combination meter assembly.
3. Check ambient temperature of the vehicle.
4. Check the difference between the displayed temperature and ambient temperature.

   OK

   The ambient temperature displayed on the combination meter assembly almost matches the actual ambient temperature.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (TEMPORARY THERMISTOR ASSEMBLY MALFUNCTION) 

Result: 

NG 

See step  4

1. Turn the ignition switch to OFF.
2. Leave it for 60 minutes or more.
3. Disconnect the connector from ambient temperature sensor(thermistor assembly).
4. Wait for at least 5 seconds.
5. Connect the connector to the ambient temperature sensor(thermistor assembly).
6. Turn the ignition switch to ON.
7. Check the ambient temperature displayed on the combination meter assembly.
8. Check the difference between the displayed temperature and ambient temperature.

   OK

   The ambient temperature displayed on the combination meter assembly almost matches the actual ambient temperature.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (AMBIENT TEMPERATURE SENSOR(THERMISTOR ASSEMBLY) MALFUNCTION) 

Result: 

NG 

See step  5

Refer to INSPECTION [11/2021 - ]

Result

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPLACE AMBIENT TEMPERATURE SENSOR(THERMISTOR ASSEMBLY). Refer to  REMOVAL [11/2021 - ]