Lincoln Aviator 2020-2022 Service Manual / Electrical / Instrumentation and Warning Systems / Instrument Panel and Interior Switches Illumination / Description and Operation - Instrument Panel and Interior Switches Illumination - System Operation and Component Description

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

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


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


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


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 2020-2022 Owners Manual: Wireless Accessory Charger (If Equipped)


    WARNING: Wireless charging devices can affect the operation of implanted medical devices, including cardiac pacemakers. If you have any implanted medical devices, we recommend that you consult with your physician. Note: Devices without built-in Qi wireless charging receivers require an additional Qi receiver or sleeve...

    Lincoln Aviator 2020-2022 Service Manual: Removal and Installation - Hood


    Removal NOTE: Removal steps in this procedure may contain installation details. On both sides. Index-mark the hood hinge location to aid in hood installation. Remove the clips and the hood struts. Remove the nuts and the hood...

    Categories

    Locking and Unlocking the Doors from Inside

    Lincoln Aviator. Locking and Unlocking the Doors from Inside

    Unlock. Lock.

    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.

    read more

     
    Copyright © 2022 www.liaviator2.com