B0160

CIRCUIT DESCRIPTION
The driver information center (DIC) monitors the signal circuit of the ambient air temperature sensor. The ambient air temperature is a thermistor which varies in resistance as the temperature changes. As the resistance of the ambient air temperature sensor increases, the DIC senses a larger voltage drop across the sensor, indicating a lower temperature. As the resistance of the ambient air temperature sensor decreases, the driver information center senses a smaller voltage drop across the sensor, indicating a higher temperature.

CONDITIONS FOR RUNNING THE DTC
The DIC must be fully operational within a continuous voltage supply of 9.0-16.0 volts.

CONDITIONS FOR SETTING THE DTC
The DIC detects that the temperature is greater than 140°C (284°F) for more than 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
SC is displayed by the DIC in the compass/temperature mode when the condition is present.

CONDITIONS FOR CLEARING THE DTC
The DTC becomes history when the DIC no longer detects a failure.
^ The history DTC clears after 100 fault free ignition cycles.
^ The DIC receives the clear code command from the scan tool.

TEST DESCRIPTION

Steps 1-9:

The number below refer to the step number on the diagnostic table.
3. Tests for the proper operation of the circuit in the high voltage range. A DTC may set when performing this step.