Overview
The interior lighting system consists of
- Courtesy lamps
- Demand lamps
- Ambient lighting (if equipped)
The courtesy lamps subsystem consists of
- Interior lamps
- Puddle lamps (if equipped)
- Door ajar switches (integrated into the door latches)
- Liftgate ajar switch (manual liftgate)
- Courtesy lamp switch (integrated into the front/driver interior lamp)
- SCCM
- DDM
- PDM
- BCM
- LTM (power liftgate)
The courtesy lamps provide illumination to the interior of the vehicle (and below the exterior mirrors if equipped with puddle lamps) when entering or exiting the vehicle or when requested using the courtesy lamp switch located on the interior lamp.
The demand lamps subsystem consists of
- Interior lamps
- Vanity mirror lamps
- Glove compartment lamp
- BCM
The demand lamps are used to provide illumination to specific areas within the vehicle when needed. The BCM energizes the interior light relay to supply voltage to the demand lamps when the battery saver feature is not active.
The ambient lighting subsystem consists of
- Ambient lighting LEDs
- Ambient lighting module (integrated into the overhead console)
- Ambient lighting switches (integrated into the overhead console)
The ambient lighting provides aesthetically colored illumination to the center console storage bin and cup holders, the door map pockets, the door pull handles, the door release handles, and the front and rear footwells for illuminated entry or when the ignition is in RUN with the parking lamps on. The ambient lighting is controlled using the buttons and knob on the overhead console.
Scheme 1
Diagnostic Overview
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Normal Operation and Fault Conditions
Refer to COURTESY LAMPS .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1175:64 | Drivers Door Ajar Switch: Signal Plausibility Failure | Sets when the BCM detects a short to ground from the driver door ajar input circuit. |
DTC FAULT TRIGGER CONDITIONS
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to COURTESY LAMPS .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1D13:11 | Interior Lights Circuit "A": Circuit Short To Ground | Sets when the BCM detects an open from the courtesy lighting ground control circuit. |
| B1D13:12 | Interior Lights Circuit "A": Circuit Short To Battery | Sets when the BCM detects a short to battery voltage from the courtesy lighting ground control circuit. |
DTC FAULT TRIGGER CONDITIONS
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to COURTESY LAMPS .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B12C2:11 | Puddle Lamp: Circuit Short To Ground | Sets when the DDM or the PDM detects a short to ground from the puddle lamp output circuit. |
| B12C2:15 | Puddle Lamp: Circuit Short To Battery Or Open | Sets when the DDM or the PDM detects an open or a short to battery voltage from the puddle lamp output circuit. |
DTC FAULT TRIGGER CONDITIONS
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to SYSTEM WIRING DIAGRAMS - Power Door Locks for additional information.
Refer to COURTESY LAMPS .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1175:64 | Drivers Door Ajar Switch: Signal Plausibility Failure | May set when the BCM detects an open from the left front door ajar circuit. |
| B11E9:13 | Left Rear Door Ajar Switch: Circuit Open | Sets when the BCM detects an open from the left rear door ajar circuit during a self-test. |
| B11EA:13 | Right Rear Door Ajar Switch: Circuit Open | Sets when the BCM detects an open from the right rear door ajar circuit during a self-test. |
| B1306:13 | Liftgate Ajar Switch: Circuit Open | Sets when the BCM detects an open from the liftgate ajar circuit during a self-test. |
| B1318:13 | Right Front Door Ajar Switch: Circuit Open | Sets when the BCM detects an open from the right front door ajar circuit during a self-test. |
| B131B:13 | Left Front Door Ajar Switch: Circuit Open | Sets when the BCM detects an open from the left front door ajar circuit during a self-test. |
DTC FAULT TRIGGER CONDITIONS
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to COURTESY LAMPS .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1D13:11 | Interior Lights Circuit "A": Circuit Short To Ground | Sets when the BCM detects a short to ground from the courtesy lighting ground control circuit. |
DTC FAULT TRIGGER CONDITIONS
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to DEMAND LAMPS .
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to BATTERY SAVER .
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to AMBIENT LIGHTING .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1088:86 | LIN Bus "B": Signal Invalid | Sets when the BCM loses communication with the ambient lighting module over the LIN circuit. |
| B1088:88 | LIN Bus "B": Bus Off | Sets when the BCM loses communication with the ambient lighting module over the LIN circuit. |
| B1390:83 | Ambient Light Control Module: Value of Signal Protection Calculation Incorrect | Check the vehicle service history for recent service actions related to this module. This BCM DTC sets due to incomplete or incorrect PMI procedures. If there have been recent service actions with this module, Repeat the PMI procedure as directed by the scan tool. Refer to MODULE CONFIGURATION . If there have been no recent service actions, Install a new module to correct the failure to retain configuration data. |
| B1390:87 | Ambient Light Control Module: Missing Message | Sets when the BCM loses communication with the ambient lighting module over the LIN circuit. |
DTC FAULT TRIGGER CONDITIONS
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Interior Lamps for additional information.
Refer to AMBIENT LIGHTING .
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.
Refer to SYSTEM WIRING DIAGRAMS - Power Liftgate for additional information.
Refer to SYSTEM WIRING DIAGRAMS - Power Door Locks for additional information.
Refer to COURTESY LAMPS .