Lincoln Aviator: Instrument Panel and Interior Switches Illumination / Description and Operation - Instrument Panel and Interior Switches Illumination - System Operation and Component Description
System Operation
System Diagram - Networked Illumination - Doors
NOTE: Not all vehicles come equipped with all the items listed below. The door latch modules are identified as follows:
- Left front door - DCME
- Right front door - DCMF
- Left rear door - DCMG
- Right rear door - DCMH
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| Item | Description |
|---|---|
| 1 | MS-CAN |
| 2 | DCME |
| 3 | Light sensor |
| 4 | DCMF |
| 5 | DCMH |
| 6 | DDM |
| 7 | PDM |
| 8 | RF door lock switch |
| 9 | RF door window control switch |
| 10 | LF door window control switch |
| 11 | RR door window control switch |
| 12 | LR door window control switch |
| 13 | LF door lock switch |
| 14 | RR door lock switch |
| 15 | LR door lock switch |
| 16 | GWM |
| 17 | DCMG |
| 18 | LH front interior door latch switch |
| 19 | RH front interior door latch switch |
| 20 | LH rear interior door latch switch |
| 21 | RH rear interior door latch switch |
| 22 | LIN |
| 23 | LIN |
| 24 | HS-CAN1 |
| 25 | BCM |
| 26 | Dimmer switch |
| 27 | Headlamp switch |
System Diagram - Networked Illumination - Steering Wheel Switches
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| Item | Description |
|---|---|
| 1 | Light sensor |
| 2 | RH lower steering wheel switch |
| 3 | RH upper steering wheel switch |
| 4 | LH lower steering wheel switch |
| 5 | LH upper steering wheel switch |
| 6 | SIMA |
| 7 | Upshift paddle switch |
| 8 | Downshift paddle switch |
| 9 | HS-CAN2 |
| 10 | GWM |
| 11 | HS-CAN1 |
| 12 | LIN |
| 13 | BCM |
| 14 | Dimmer switch |
| 15 | Headlamp switch |
System Diagram - Networked Illumination - Other Modules
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| Item | Description |
|---|---|
| 1 | FCIM |
| 2 | APIM |
| 3 | Light sensor |
| 4 | ACM |
| 5 | IPC |
| 6 | FDIM |
| 7 | without Touchscreen |
| 8 | FCDIM |
| 9 | RHVAC |
| 10 | RACM |
| 11 | LIN |
| 12 | HS-CAN1 |
| 13 | MS-CAN |
| 14 | HS-CAN3 |
| 15 | GWM |
| 16 | Dimmer switch |
| 17 | Headlamp switch |
| 18 | BCM |
Network Message Chart
Module Network Input Messages - ACM, APIM, DCME, DCMF, DCMG, DCMH, DDM, FCIM, RACM, RHVAC, SIMA, GWM, IPC and PDM.
| Broadcast Message | Originating Module | Message Purpose |
| Illumination dimming level | BCM | Commands the illumination dimming level for networked modules and outputs that are hardwired to networked modules. |
Networked Illumination Operation
The dimmable switches and components are illuminated when the parking lamps are on. The system-wide illumination dimming level is determined by the BCM using the ambient light level input from the light sensor and the requested illumination dimming level input from the dimmer switch. The BCM sends the illumination dimming level message to the GWM on the HS-CAN1.
The GWM distributes the message to the following components:
MS-CAN
- FCIM
- RHVAC
- DDM
- PDM
HS-CAN2
- SIMA
HS-CAN3
- IPC
- APIM
- ACM
The receiving modules use the illumination dimming level message to determine the backlighting intensity of internal and external non-networked illumination sources. If a module does not receive the illumination dimming level message or the data received is deemed invalid, the module sets a continuous memory DTC and defaults to full nighttime intensity.
If the IPC does not receive the dimming level or ambient light level network messages from the BCM for up to 5 seconds, the IPC illumination remains at the last level based on the last message received. If the IPC receives invalid or no signals for more than 5 seconds, the IPC defaults to full nighttime illumination level.
On vehicles equipped with autolamps, if the exterior lamps are activated during the daytime, the message center illumination remains at full intensity and cannot be dimmed using the instrument panel dimmer switch. If the vehicle travels under a bridge or through a tunnel, the low level of ambient light causes the illumination level of the message center to change to the level set by the illumination panel dimmer switch. The message center illumination changes back to full intensity when the intense ambient light is restored.
The hazard switch is integral to the FCIM and cannot be serviced separately.
Steering Wheel Switch Illumination Operation
The SIMA is internal to the LH upper steering wheel switch and controls the steering wheel and paddle switch illumination. The SIMA provides a pulse-width modulated voltage to the other switches on two circuits. All steering wheel and paddle switches are dimmable when the parking lamps are on.
The upper steering wheel switches are illuminated when the ignition is on. The RH upper steering wheel switch icons change depending on the mode the switch is in. The lower steering wheel switches are only illuminated when the cruise control system is on. The paddle switches are illuminated when the parking lamps are on.
System Diagram - Non-Networked Illumination
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| Item | Description |
|---|---|
| 1 | BCM |
| 2 | Overhead console |
| 3 | USB hub |
| 4 | EPB switch |
| 5 | Emergency call switch |
| 6 | Start-stop switch |
| 7 | LH second row seat control switch |
| 8 | RH second row seat control switch |
| 9 | Third row seat control switch |
| 10 | Drive mode switch |
| 11 | Sunshade switch |
| 12 | Light sensor |
| 13 | Dimmer switch |
| 14 | Headlamp switch |
| 15 | Liftgate release switch |
| 16 | LIN |
Non-Networked Illumination Operation
The BCM provides voltage to the rear seat control switches and the liftgate release switch with the key on. The illumination for these switches are non-dimmable.
Based on the ambient light level input from the light sensor and the requested illumination dimming level input from the dimmer switch, the BCM calculates the correct dimming level for the non-networked illumination sources. The BCM provides a pulse-width modulated voltage to all non-networked illumination sources.
Field-Effect Transistor (FET) Protection
Field-Effect Transistor (FET) protection is used to protect the BCM output drivers from damage in the event an excessive current draw is detected on a BCM output. Each illumination circuit connected to the BCM is separately protected. Refer to the System Diagram in this section to view the different groups of BCM non-networked illumination outputs. For a full description of Field-Effect Transistor (FET) protection,
Refer to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).
Component Description
Dimmer Switch
The illumination dimmer switch is a momentary contact switch that is integral to the headlamp switch. The headlamp switch communicates with the BCM over a LIN circuit. When the illumination dimmer switch is pressed up or down, the requested illumination level is sent to the BCM.
Description and Operation - Instrument Panel and Interior Switches Illumination - Overview
Overview
Dimmable Illumination
Dimmable
illumination provides backlighting to switches and control components
when the parking lamps are on. The instrument panel dimmer switch is
used to increase or decrease the level of intensity for the dimmable
backlit components...
Diagnosis and Testing - Instrument Panel and Interior Switches Illumination
Diagnostic Trouble Code (DTC) Chart
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation)...
Other information:
Lincoln Aviator 2020-2024 Service Manual: Removal and Installation - Second Row Temperature Door Actuator
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Lincoln Aviator 2020-2024 Service Manual: Diagnosis and Testing - Interior Lighting
Diagnostic Trouble Code (DTC) Chart Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation). Diagnostic Trouble Code Chart Module DTC Description Action BCM B1175:01 Driver Door Ajar Switch:General Electrical Failure If the courtesy lamps are inoperative, GO to Pinpoint Test A BCM B1175:01 Driver Door Ajar Switch:General Electrical Failure If the courtesy lamps are always on, GO to Pinpoint Test C BCM B1176:01 Passenger Door Ajar Switch:General Electrical Failure If the courtesy lamps are inoperative, GO to Pinpoint Test A BCM B1176:01 Passenger Door Ajar Switch:General Electrical Failure If the courtesy lamps are always on, GO to Pinpoint Test C BCM B11C0:01 Driver Side Rear Door Ajar Switch:General Electrical Failure If the courtesy lamps are inoperative, GO to Pinpoint Test A BCM B11C0:01 Driver Side Rear Door Ajar Switch:General Electrical Failure If the courtesy lamps are always on, GO to Pinpoint Test C BCM B11C1:01 Passenger Side Rear Door Ajar Switch:General Electrical Failure If the courtesy lamps are inoperative, GO to Pinpoint Test A BCM B11C1:01 Passenger Side Rear Door Ajar Switch:General Electrical Failure If the courtesy lamps are always on, GO to Pinpoint Test C BCM B12C2:11 Puddle Lamp:Circuit Short To Ground GO to Pinpoint Test H BCM B12C2:15 Puddle Lamp:Circuit Short To Battery or Open GO to Pinpoint Test H BCM B1306:01 Liftgate Ajar Switch:General Electrical Failure GO to Pinpoint Test K BCM B1306:11 Liftgate Ajar Switch:Circuit Short To Ground GO to Pinpoint Test K BCM B1313:11 Interior Lighting Output:Circuit Short To Ground GO to Pinpoint Test B BCM B1313:15 Interior Lighting Output:Circuit Short To Battery or Open If the courtesy lamps are always on, GO to Pinpoint Test B BCM B1313:15 Interior Lighting Output:Circuit Short To Battery or Open If the courtesy lamps are always on, GO to Pinpoint Test D BCM B145C:11 Ambient Lighting Power Supply Output:Circuit Short To Ground GO to Pinpoint Test I BCM B145C:15 Ambient Lighting Power Supply Output:Circuit Short To Battery or Open GO to Pinpoint Test I BCM B1465:00 Ambient Lighting Bus 1:No Sub Type Information If all the ambient lighting is inoperative, always on or does not change color/intensity, GO to Pinpoint Test I BCM B1465:00 Ambient Lighting Bus 1:No Sub Type Information If one or more of the ambient lighting Light Emitting Diodes (LEDs) are inoperative or do not change color/intensity, GO to Pinpoint Test J BCM B1465:96 Ambient Lighting Bus 1:Component Internal Failure If all the ambient lighting is inoperative, always on or does not change color/intensity, GO to Pinpoint Test I BCM B1465:96 Ambient Lighting Bus 1:Component Internal Failure If one or more of the ambient lighting Light Emitting Diodes (LEDs) are inoperative or do not change color/intensity, GO to Pinpoint Test J BCM B1467:00 Ambient Lighting Bus 3:No Sub Type Information If all the ambient lighting is inoperative, always on or does not change color/intensity, GO to Pinpoint Test I BCM B1467:00 Ambient Lighting Bus 3:No Sub Type Information If one or more of the ambient lighting Light Emitting Diodes (LEDs) are inoperative or do not change color/intensity, GO to Pinpoint Test J BCM B1467:96 Ambient Lighting Bus 3:Component Internal Failure If all the ambient lighting is inoperative, always on or does not change color/intensity, GO to Pinpoint Test I BCM B1467:96 Ambient Lighting Bus 3:Component Internal Failure If one or more of the ambient lighting Light Emitting Diodes (LEDs) are inoperative or do not change color/intensity, GO to Pinpoint Test J BCM B14AA:11 Demand Lamp Output:Circuit Short To Ground GO to Pinpoint Test E BCM B14AA:15 Demand Lamp Output:Circuit Short To Battery or Open GO to Pinpoint Test E BCM B153C:11 Color Ambient Light Output:Circuit Short To Ground GO to Pinpoint Test I BCM B153C:15 Color Ambient Light Output:Circuit Short To Battery or Open GO to Pinpoint Test I DCME B1175:19 Drivers Door Ajar Switch:Circuit Current Above Threshold GO to Pinpoint Test C DCMF B1176:19 Passenger Door Ajar Switch:Circuit Current Above Threshold GO to Pinpoint Test C DCMG B11C0:19 Driver Side Rear Door Ajar Switch:Circuit Current Above Threshold GO to Pinpoint Test C DCMH B11C1:19 Passenger Side Rear Door Ajar Switch:Circuit Current Above Threshold GO to Pinpoint Test C DDM B1165:11 Left Front Puddle Lamp Output:Circuit Short To Ground GO to Pinpoint Test G DDM B1165:15 Left Front Puddle Lamp Output:Circuit Short To Battery Or Open GO to Pinpoint Test G PDM B1166:11 Right Front Puddle Lamp Output:Circuit Short To Ground GO to Pinpoint Test G PDM B1166:15 Right Front Puddle Lamp Output:Circuit Short To Battery Or Open GO to Pinpoint Test G RGTM B1306:12 Liftgate Ajar Switch:Circuit Short To Battery GO to Pinpoint Test C Symptom Chart(s) Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices...
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Locking and Unlocking the Doors from Inside
Locking the Doors
Press the lock switch on the door interior trim panel. The doors can no longer be released using the exterior door handle switches and the luggage compartment locks.
