Outside air temperature indicator does not change

NOTE: Outside air temperature is indicated based on the measurement value of the outside air temperature sensor located behind the center of the front bumper. Because of the location of the sensor, it may be affected by heat reflection from the road, engine and radiator heat, or hot exhaust from surrounding traffic. To display the outside air temperature, the gauge control module has an indication mode based on engine coolant temperature and vehicle speed. Some modes do not raise the temperature indication, so the outside air temperature indication may not change when the mode continues.

Outside Air Temperature Indication Mode

Indication Mode	Indication Temperature Increase	Indication Temperature Decrease	Notes
Initial Indication	- - -	- - -	If the current outside air temperature is higher than the indicated outside air temperature the last time the engine start/stop switch was OFF mode, and the engine coolant temperature is higher than 140°F (60°C): The last outside air temperature that was indicated before the engine start/stop switch was OFF mode is displayed. If the current outside air temperature is higher than the indicated outside air temperature the last time the engine start/stop switch was OFF mode, and the engine coolant temperature is less than 140°F (60°C): The current temperature measured by the outside air temperature sensor is indicated.
Garage Mode	Increases 1°F (1°C) every 2 seconds to the current outside air temperature.	Decreases 1°F (1°C) every 2 seconds to the current outside air temperature.	If the engine coolant temperature is less than 140°F (60°C) when the engine start/stop switch is ON mode, the mode shifts to the garage mode. The garage mode continues until the engine coolant temperature reaches 140°F (60°C).

Indication Mode	Indication Temperature Increase	Indication Temperature Decrease	Notes
Vehicle Leaving Mode	- - -	- - -	If the engine coolant temperature rises to more than 140°F (60°C), and then 140°F (60°C) drops to less than when power mode ON, continue handling it as if at 140°F (60°C) without shifting to the garage mode.
Traffic Jam Mode	- - -	If the outside air temperature is less than the indicated temperature, the temperature decreases by 1°F (1°C) every 2 seconds.	If the engine coolant temperature is more than 140°F (60°C) and vehicle speed is 0 mph (0 km/h), the mode shifts to the traffic jam mode.
Predictive Mode	If the temperature measured by the outside air temperature sensor is greater than the predicted value, the outside temperature indicator increases by 1°F (1°C) per 1 minute.	If the temperature measured by the outside air temperature sensor is smaller than the predicted value, the outside temperature indicator decreases by 1°F (1°C) per 1 minute.	Calculates the true outside air temperature from the sensor value at the time the vehicle starts running and the amount of change of the sensor value.

1. A/C system DTC check:

- 1. Check for DTCs with the HDS.

DTC Description	DTC
B1227 An open in the outside air temperature sensor circuit
B1228 A short in the outside air temperature sensor circuit

Is DTC B1227 or B1228 indicated?

YES

Go to the indicated DTC troubleshooting.

Go to step 2.

2. Outside air temperature sensor check:
- 1. Test the outside air temperature sensor .

Is the outside air temperature sensor OK?

YES

Confirm the control method of the outside air temperature indicator.

NO

Replace the outside air temperature sensor .