B105A:12, B105A:14, B1A61:11, B1A61:15, B1A69:12, B1A69:14
Normal Operation and Fault Conditions
In-Vehicle Temperature and Humidity Sensor, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation).
DTC Fault Trigger Conditions
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 P : 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.
P1 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
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.