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Outside Air Temperature Indicator Calibration
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Outside Air Temperature Indicator - Calibrate |
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The outside air temperature sensor is located behind the center of the front bumper. The gauge control module uses measurements from this sensor to display the outside air temperature.
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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.
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These conditions can heat soak the outside air temperature sensor and cause inaccurate readings. Logic has been written into the gauge control module to help prevent abnormal or fluctuating outside air temperature indicator readings.
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Outside Air Temperature Indicator Logic
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Engine coolant temperature 140 °F (60 °C) or higher:
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If the engine coolant temperature is 140 °F (60 °C) or higher when the vehicle is turned to the ON mode, the outside air temperature shown the last time the key was turned off is displayed regardless of the current temperature measured by the outside air temperature sensor.
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Engine coolant temperature less than 140 °F (60 °C):
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If the engine coolant temperature is less than 140 °F (60 °C) or lower when the vehicle is turned to the ON mode, the current temperature measured by the outside air temperature sensor is indicated.
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Information Update to the Outside Air Temperature Indicator While Driving
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Engine coolant temperature 140 °F (60 °C) or higher:
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If the temperature measured by the outside air temperature sensor is greater than the temperature on the outside air temperature indicator, the outside temperature indicator will increase by 1 °F (1 °C) per minute after the vehicle speed is greater than 19 mph (30 km/h) for more than 1 minute and 30 seconds. It continues to increase until the current outside air temperature is indicated. So, the first change to the outside air temperature indicator is 1 minute and 30 seconds after the vehicle speed exceeds 19 mph (30 km/h). If the vehicle speed drops below 19 mph (30 km/h), the indicator does not update again until the vehicle speed has increased to 19 mph (30 km/h) or more for more than 1 minute and 30 seconds again.
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Engine coolant temperature less than 140 °F (60 °C):
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If the outside air temperature is less than the indicated temperature, the temperature decreases 1 °F (1 °C) every 2 seconds until the current outside air temperature indicated regardless of vehicle speed. | |
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If the indicator displays ? ? ?°F (? ? ?°C) for more than 2 seconds after selecting the outside air temperature display mode, the gauge is not receiving the outside temperature data from the climate control unit over the B-CAN. Check the climate control system or multiplex integrated control system for DTCs.
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NOTE: The outside air temperature indicator's displayed temperature can be recalibrated ± 5 °F (± 3 °C) to meet the customer's expectations.
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