Normal Operation and Fault Conditions
The in-vehicle temperature and humidity sensors receive a ground from the HVAC module. The sensor varies its resistance with the temperature. As the temperature rises, the resistance falls. As the temperature falls, the resistance rises. The HVAC module measures this resistance to determine the temperature at the sensor. The sensor DTCs set if there is a fault in either the temperature or humidity part of the sensor or circuits.
DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1A61:11 | Cabin Temperature Sensor: Circuit Short to Ground | This CMDTC sets when the HVAC module senses lower than expected voltage on the sensor feedback circuit, indicating a short to ground. |
| B1A61:15 | Cabin Temperature Sensor: Circuit Short to Battery or Open | This CMDTC sets when the HVAC module senses greater than expected voltage on the sensor feedback circuit, indicating a short to voltage or an open circuit or sensor. |