Honda HR-V: Outside Air Temperature Indicator Calibration

Procedure

NOTE: To test the outside air temperature sensor, refer to the outside air temperature sensor test procedure

1. Outside Air Temperature Indicator - Calibrate

Description

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.

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.

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.

Outside Air Temperature Indicator Logic

Engine coolant temperature 140 ºF (60 ºC) or higher: If the engine coolant temperature is 140 ºF (60 ºC) or higher when the vehicle is turned to the ON mode, the outside air temperature shone the last time the vehicle is turned to the OFF (LOCK) mode is displayed regardless of the current temperature measured by the outside air temperature sensor.

Engine coolant temperature less than 140 ºF (60 ºC): If the engine coolant temperature is less than 140 ºF (60 ºC) or lower when the vehicle is turned to the ON mode, the current temperature measured by the outside air temperature sensor is indicated.

Information Update to the Outside Air Temperature Indicator While Driving

Engine coolant temperature 140 ºF (60 ºC) or higher: 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 ºF (1 ºC) 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.

Engine coolant temperature less than 140 ºF (60 ºC): If the outside air temperature is less than the indicated temperature, the temperature decreases 1 ºF (1 ºC) every 2 seconds until the current outside air temperature indicated regardless of vehicle speed.

Fahrenheit:

Celsius:

Troubleshooting

If the indicator displays- - -ºF (- - -ºC) for more than 2 seconds after selecting the outside air temperature display mode, the gauge is not receiving the outside temperature signal. Check the outside temperature sensor or the outside temperature sensor circuits.

Fahrenheit:

Celsius:

Calibration

NOTE: The outside air temperature indicator's displayed temperature can be recalibrated Â+- 5 ºF (Â+- 3 ºC) to meet the customer's expectations.

1. Turn the vehicle to the ON mode

2. Select the odometer/trip A or odometer/trip B display

3. Select the outside air temperature display and press and hold the SELECT/RESET knob for 10 seconds. While you continue to hold the button, the display will scroll through temperature setting from +5 ºF (+3 ºC) to -5 ºF (-3 ºC) as shown.

4. When the desired correction value appears on the display, release the button, and the recalibrated outside air temperature will be displayed.

NOTE: The recalibration temperature is not the value the sensor sees. Therefore the temperature can only be adjusted Â+- 5 ºF (Â+- 3 ºF) from the sensors.

Example:

NOTE: To recalibrate the display to the true temperature, remove the outside air temperature sensor (A), but leave it connected. Submerge the sensor and a thermometer (B) in a container of ice water (C). Select the calibration mode as described above, then recalibrate the display to the true temperature.

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