Pinpoint Test C : DTC (Diagnostic Trouble Code) B120C:11, DTC (Diagnostic Trouble Code) B120C:13: Notes
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).
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| IPMA 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. |
| IPMA 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. |
Possible Sources
- Wiring, terminals or connectors
- Camera windshield defrost heater
- IPMA
NOTE:
Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector. Use only Rotunda Flex Probes (NUD105-R025D)
NOTE:
Before replacing the camera windshield defrost heater or IPMA for a camera windshield defrost heater concern, verify the integrity of the wiring, connectors and terminals on the camera windshield defrost heater jumper harness.