Gauges Symptom Troubleshooting - Outside air temperature indicator does not change

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

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	If the current outside air temperature is higher than the indicated outside air temperature the last time the vehicle OFF (LOCK) mode, and the engine coolant temperature is higher than 140 °F (60 °C): The last outside air temperature that was indicated before the vehicle OFF (LOCK) mode is displayed.
	If the current outside air temperature is higher than the indicated outside air temperature the last time the vehicle OFF (LOCK) 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.
	If the current outside air temperature is lower than the indicated outside air temperature the last time the vehicle OFF (LOCK) mode: The current temperature measured by the outside air temperature sensor is indicated.

Garage Mode

Increases 1 °F every 1 second (or 1 °C every 2 seconds) to the current outside air temperature.

Decreases 1 °F every 1 second (or 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 vehicle ON mode, the mode shifts to the garage mode.
	The garage mode continues until the engine coolant temperature reaches 140 °F (60 °C) or for about 3 minutes after the vehicle speed exceeds 1.2 mph (2 km/h).

Traffic Jam Mode

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If the outside air temperature is less than the indicated temperature, the temperature decreases by 1 °F per 1 second (or 1 °C per 2 seconds).

If the engine coolant temperature is more than 140 °F (60 °C) and vehicle speed is 1.2 mph (2 km/h), the mode shifts to the traffic jam mode.

NOTE: Once entering to the traffic jam mode, the mode does not shift to the garage mode even after the engine coolant temperature goes below 140 °F (60 °C).

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 per 33 seconds (or 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 per 33 seconds (or 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.

Stable Run Mode

Increases 1 °F every 33 seconds (or 1 °C every 1 minute) to the current outside air temperature.

Decreases 1 °F every 1 second (or 1 °C every 2 seconds) to the current outside air temperature.

When the predictive mode continues for 11 minutes or the outside air temperature goes below the temperature being displayed during the predictive mode, the mode shifts to the stable run mode.

A/C system DTC check:

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.


	NO

Go to step 2.

Outside air temperature sensor check:

Outside air temperature sensor check

?1.	Test the outside air temperature sensor.

Is the outside air temperature sensor OK?


	YES

Confirm the operation of the outside air temperature indicator.?


	NO

Replace the outside air temperature sensor.?