Ambient Temperature Sensor

The outside temperature function is supported by the ambient temperature sensor (ATS), a signal and ground circuit hardwired to the compass/temp module, and the display.

If the display indicates 60°C (140°F) or the ATS sense circuit is shorted to ground, the temp display will be 60°C (140°F) to indicate a SHORT circuit condition.

If the display indicates -45°C (-49°F) or the ATS sense circuit is open, the temp display will be -45°C (-49°F) to indicate an OPEN circuit condition.

If there is an OPEN or SHORT circuit condition, it must be repaired before the VF display can be tested.

The ATS can be diagnosed using the AMBIENT TEMPERATURE SENSOR TEST  . If the ATS and the circuits are confirmed to be OK, but the temperature display is inoperative or incorrect, replace the Compass/Temperature Module.