Pinpoint Test B : One Turn Signal Lamp Is Inoperative Or Always On: Notes
WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Turn Signal/Stop/Hazard Lamps for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Exterior Lighting - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B123A:11 | Left Front Turn Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH front turn lamp voltage supply circuit. |
| B123A:15 | Left Front Turn Indicator: Circuit Short To Battery Or Open | A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the LH front turn lamp voltage supply circuit. |
| B123B:11 | Right Front Turn Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH front turn lamp voltage supply circuit. |
| B123B:15 | Right Front Turn Indicator: Circuit Short To Battery Or Open | A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the RH front turn lamp voltage supply circuit. |
| B1247:11 | Left Rear Turn Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH rear turn lamp voltage supply circuit. |
| B1247:15 | Left Rear Turn Indicator: Circuit Short To Battery or Open | A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the LH rear turn lamp voltage supply circuit. |
| B1248:11 | Right Rear Turn Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH rear turn lamp voltage supply circuit. |
| B1248:15 | Right Rear Turn Indicator: Circuit Short To Battery or Open | A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the RH rear turn lamp voltage supply circuit. |
| B1265:01 | Left Rear Turn Lamp Feedback: General Electrical Failure | A continuous memory and on-demand DTC that sets when the BCM detects an electrical failure from the LH rear turn lamp outage circuit when the turn lamp is activated. |
| B1266:01 | Right Rear Turn Lamp Feedback: General Electrical Failure | A continuous memory and on-demand DTC that sets when the BCM detects an electrical failure from the RH rear turn lamp outage circuit when the turn lamp is activated. |
| B1497:01 | Left Front Turn Lamp Feedback: General Electrical Failure | A continuous memory and on-demand DTC that sets when the BCM detects an electrical failure from the LH rear turn lamp outage circuit when the turn lamp is activated. |
| B1498:01 | Right Front Turn Lamp Feedback: General Electrical Failure | A continuous memory and on-demand DTC that sets when the BCM detects an electrical failure from the RH rear turn lamp outage circuit when the turn lamp is activated. |
| B14B4:11 | Left Turn Lamps: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH turn lamp voltage supply circuits. |
| B14B4:15 | Left Turn Lamps: Circuit Short To Battery or Open | A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the LH turn lamp voltage supply circuits. |
| B14B5:11 | Right Turn Lamps: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH turn lamp voltage supply circuits. |
| B14B5:15 | Right Turn Lamps: Circuit Short To Battery or Open | A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the RH turn lamp voltage supply circuits. |
| B1D06:11 | Left Turn Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the DDM detects an open or short to voltage from the LH exterior mirror turn lamp voltage supply circuit. |
| B1D07:11 | Right Turn Indicator: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the PDM detects an open or short to voltage from the RH exterior mirror turn lamp voltage supply circuit. |
Possible Sources
- Bulb
- Rear lamp assembly
- Exterior mirror
- Wiring, terminals or connectors
- DDM
- PDM
- BCM