B0162

DTC B0162

CIRCUIT DESCRIPTION
The driver information center (DIC) monitors the signal circuit of the ambient air temperature sensor. The ambient air temperature sensor 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 DIC senses a small voltage drop across the sensor, indicating a higher temperature.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B0162 Outside Air Temperature Sensor Circuit Open

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 less than -40�C (-40�F) for more than 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
OC 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 - 10:

The number below refer to the step number on the diagnostic table.
3. Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.