Pinpoint Test O : B105A:12, B105A:14, B1A61:11, B1A61:15, B1A69:12, B1A69:14: Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Manual Climate Control System for schematic and connector information.
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 .
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.