Pinpoint Test C : DTC (Diagnostic Trouble Code) B12D8:11, DTC (Diagnostic Trouble Code) B12D8:13, DTC (Diagnostic Trouble Code) B120C:11, DTC (Diagnostic Trouble Code) B120C:13: Notes
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Power Mirrors for schematic and connector information.
Normal Operation and Fault Conditions
The IPMA supplies voltage and ground to the camera windshield defrost heater. The IPMA uses input from the front camera and the ambient air temperature data from the PCM to command the heater on and off. The heater may be commanded on if the ambient temperature is below 5°C (41°F).
Possible Causes
- Wiring, terminals or connectors
- Camera windshield defrost heater
- IPMA
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B120C:11 | Heater for Windshield Mounted Sensor: Circuit Short To Ground | An on-demand and continuous memory DTC that sets in the IPMA if an excessive current draw is detected on the heater output circuit. |
| B120C:13 | Heater for Windshield Mounted Sensor: Circuit Open | An on-demand and continuous memory DTC that sets in the IPMA if a lower than expected current draw is detected on the heater output circuit. |
| B12D8:11 | Mirror Heater Output: Circuit Short To Ground | An on-demand and continuous memory DTC that sets in the IPMA if an excessive current draw is detected on the heater output circuit. |
| B12D8:13 | Mirror Heater Output: Circuit Open | An on-demand and continuous memory DTC that sets in the IPMA if a lower than expected current draw is detected on the heater output circuit. |
Visual Inspection and Diagnostic Pre-Checks
Inspect the integrity of the wiring, terminals and connectors on the jumper harness between the vehicle harness and the camera windshield defrost heater.