DTC | Description | Fault Trigger Conditions |
|---|---|---|
B105A:12 Cabin Temperature Sensor Fan: Circuit Short To Battery | This DTC sets when the module senses higher than expected voltage on the in-vehicle temperature and humidity sensor fan motor circuit. The in-vehicle temperature and humidity sensor fan motor is inactive. | |
B105A:14 Cabin Temperature Sensor Fan: Circuit Short To Ground or Open | This DTC sets when the module senses no voltage on the in-vehicle temperature and humidity sensor fan motor circuit, indicating an open or a short directly to ground. The in-vehicle temperature and humidity sensor fan motor is active. | |
B1A61:11 | Cabin Temperature Sensor: Circuit Short to Ground | This DTC sets when the module senses lower than expected voltage on the in-vehicle temperature and humidity sensor feedback circuit, indicating a short to ground. |
B1A61:15 Cabin Temperature Sensor: Circuit Short to Battery or Open | This DTC sets when the module senses greater than expected voltage on the in-vehicle temperature and humidity sensor feedback circuit, indicating a short to voltage or an open circuit or sensor. | |
B1A69:12 Humidity Sensor: Circuit Short To Battery | This DTC sets when the module senses greater than expected voltage on the in-vehicle temperature and humidity sensor humidity input circuit, indicating a short to voltage. | |
B1A69:14 Humidity Sensor: Circuit Short To Ground or Open | This DTC sets when the module senses no voltage on the in-vehicle temperature and humidity sensor humidity input circuit, indicating a short to ground or an open circuit or sensor. |
Possible Sources
Fuse Wiring, terminals or connectors In-vehicle temperature and humidity sensor FCIM
Visual Inspection and Diagnostic Pre-checks
Make sure the in-vehicle temperature and humidity sensor harness is not chaffed.
PINPOINT TEST N : B105A:12, B105A:14, B1A61:11, B1A61:15, B1A69:12, B1A69:14
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
N1 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
Ignition OFF. Disconnect Air distribution door actuator C232. Disconnect Driver side temperature door actuator C2091. Disconnect Passenger side temperature door actuator C2092. Disconnect Air inlet door actuator C282. Disconnect In-vehicle temperature and humidity sensor C233. Disconnect BCM fuse 21 (5A). Ignition ON. Disconnect FCIM C2402A. Disconnect FCIM C2402B. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C233-1 | Ground |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.