• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Ambient Air Temperature Sensor Signal Circuit | B0160 | B0161 | B0161 | -- |
The driver information center (DIC) applies 5 volts to 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 smaller voltage drop across the sensor, indicating a higher temperature.
The DIC must be fully operational within a continuous voltage supply of 9-16 volts.
The sensed temperature must be greater than 60°C (140°F) for more than 2 seconds.
SC is displayed by the DIC in the compass/temperature mode when the condition is present.
• | DTC B0160 status changes from current to history when the condition is no longer present. |
• | History DTC B0160 will clear after 100 consecutive fault-free ignition cycles. |
• | The DTC can be cleared with a scan tool. |
Displays and Gages Connector End Views
⇒ | If OC is not displayed, test the ambient air temperature sensor signal circuit for a short to ground. If the circuit tests normal, replace the instrument panel cluster (IPC). |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for IPC replacement, setup, and programming |