Outside Temperature Operation

The EC Comp/Temp Mirror utilizes internal module memory temperature data to accurately display the outside temperature and to avoid "hot soak" condition readings. The displayed outside temperature information is stored within the memory of the EC Comp/Temp Mirror. The temperature memory only sets after the EC Comp/Temp Mirror has been on for 5 continuous minutes. When the EC Comp/Temp Mirror is first powered up, it retrieves the temperature data from the module memory. With the memory set when the EC Comp/Temp Mirror is powered up, the last temperature stored will be displayed and the module enters the Slow Update mode, (Slow Update = 1° increase or decrease per minute.) With the memory not set when powered up, the EC Comp/Temp Mirror will enter Fast Update mode for 5 minutes and then enter Slow Update mode, (Fast Update = Sample and display the outside air temperature every 2 seconds.)

• TEMPERATURE UPDATE - WARM 

  On power up, when the outside temperature sensed by the ambient temperature sensor is warmer than the temperature stored in the module memory, the EC Comp/Temp Mirror will update the displayed temperature in relation to the current Update rate.

• TEMPERATURE UPDATE - COLD 

  On power up, when the outside air temperature sensed by the ambient temperature sensor is colder than the stored memory temperature, the EC Comp/Temp Mirror will update the displayed temperature to the outside temperature at a rate of -1° every 2 seconds.

• POTENTIAL "ICE" CONDITIONS 

  If the measured outside temperature is 3°C (37°F) or less, the temperature display will intermittently read the word "ICE" to indicate possible hazardous driving conditions. The alternating "ICE" display will end approximately 2 minutes after initial detection of approximately 3°C (37°F).

• EXTREME TEMPERATURE / OPEN OR SHORT CONDITION 

  If the measured outside temperature is more than 60°C (140°F) or the ambient temperature sensor sense circuit is shorted to ground, the temp display will be "SC" to indicate a short circuit condition.

  If the measured outside temperature is less than -45°C (-49°F) or the ambient temperature sensor sense circuit is open, the temp display will be "OC" to indicate an open circuit condition.