PINPOINT TEST C : DTCs C1B14:11 OR 12: Notes
WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic Overview
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.
Refer to Automatic Climate Control System , for schematic and connector information.
Normal Operation and Fault Conditions
A 5-volt reference voltage is supplied to the sensors and actuators from the HVAC module.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C1B14:11 | Sensor Supply Voltage A: Circuit Short to Ground | This CMDTC sets when the HVAC module senses less than 5 volts on the sensor reference voltage circuit, indicating a short to ground. |
| C1B14:12 | Sensor Supply Voltage A: Circuit Short to Battery | This CMDTC sets when the HVAC module senses greater than 5 volts on the sensor reference voltage circuit, indicating a short to voltage. |
Possible Sources
- Wiring, terminals or connectors
- HVAC module
Visual Inspection and Diagnostic Pre-checks
- Inspect loose or corroded HVAC module connections.