Pinpoint Test H : A Welcome Mat Lamp Is Inoperative Or Always On: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Wiring Diagram Interior Lamps for schematic and connector information.
Refer to Wiring Diagram Power Mirrors for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Interior Lighting - System Operation and Component Description .
DDM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1165:11 | Left Front Puddle Lamp Output: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the DDM detects a short to ground from the welcome mat lamp output circuit. |
| B1165:15 | Left Front Puddle Lamp Output: Circuit Short To Battery Or Open | A continuous memory and on-demand DTC that sets when the DDM detects an open or a short to voltage from the welcome mat lamp output circuit. |
PDM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1166:11 | Right Front Puddle Lamp Output: Circuit Short To Ground | A continuous memory and on-demand DTC that sets when the PDM detects a short to ground from the welcome mat lamp output circuit. |
| B1166:15 | Right Front Puddle Lamp Output: Circuit Short To Battery Or Open | A continuous memory and on-demand DTC that sets when the PDM detects an open or a short to voltage from the welcome mat lamp output circuit. |
Possible Sources
- Wiring, terminals or connectors
- Welcome mat lamp
- Exterior mirror
- DDM
- PDM
Visual Inspection and Diagnostic Pre-checks
- Inspect the exterior mirror for damage.