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Lincoln Aviator 2020-2024 Service Manual / Electrical / Electronic Feature Group / Perimeter Anti-Theft Alarm / Diagnosis and Testing - Perimeter Anti-Theft Alarm

Lincoln Aviator: Perimeter Anti-Theft Alarm / Diagnosis and Testing - Perimeter Anti-Theft Alarm

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 B109F:01 Intrusion Sensor Module: General Electrical Failure   GO to Pinpoint Test B
  BCM B109F:02 Intrusion Sensor Module: General Signal Failure   GO to Pinpoint Test B
  BCM B109F:08 Intrusion Sensor Module: Bus Signal / Message Failure   GO to Pinpoint Test B
  BCM B109F:49 Intrusion Sensor Module: Internal Electric Failure   GO to Pinpoint Test E
  BCM B109F:55 Intrusion Sensor Module: Not Configured   GO to Pinpoint Test F
  BCM B109F:97 Intrusion Sensor Module: Component or System Operation Obstructed or Blocked   GO to Pinpoint Test B
  BCM B109F:9A Intrusion Sensor Module: Component or System Operating Conditions   GO to Pinpoint Test B
  BCM B1305:01 Hood Switch: General Electrical Failure   GO to Pinpoint Test D
  BCM B1305:11 Hood Switch: Circuit Short To Ground   GO to Pinpoint Test D
  BCM B1305:15 Hood Switch: Circuit Short To Battery or Open   GO to Pinpoint Test D

Symptom Chart

Symptom Chart: Anti-Theft - Perimeter

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. 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).


  Symptom Chart


Condition Possible Sources Actions
No horn output during alarm activation
  • Horn output concern
DIAGNOSE the inoperative horn
REFER to: Horn (413-06 Horn, Diagnosis and Testing).
The alarm system does not activate from an unauthorized entry at the hood
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test A
The alarm system does not activate from an unauthorized entry at a door
  • Door ajar input
  • DIAGNOSE the courtesy lamps not illuminating when a door is open.
    REFER to: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).
The alarm system does not activate from an unauthorized entry at the liftgate
  • Liftgate ajar input
  • DIAGNOSE the incorrect liftgate ajar indication.
    REFER to: Instrumentation, Message Center and Warning Chimes - Vehicles With: Head Up Display (HUD) (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).
The alarm system does not activate from the intrusion sensor
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test B
The alarm system does not arm or no turn signals flash confirmation
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test C
False alarm activation
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test G

Pinpoint Tests


PINPOINT TEST A : THE ALARM SYSTEM DOES NOT ACTIVATE FROM AN UNAUTHORIZED ENTRY AT THE HOOD

Refer to Wiring Diagrams Cell 117 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Perimeter Anti-Theft Alarm - Component Location (419-01A Perimeter Anti-Theft Alarm, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • Hood latch
  • BCM

Visual Inspection and Pre-checks

  • Inspect the hood latch for damage.
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
A1 MONITOR THE BCM (BODY CONTROL MODULE) HOOD AJAR SWITCH (HOOD_SW) PID (PARAMETER IDENTIFICATION)
  • Ignition ON.
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, monitor the BCM HOOD_SW PID.
  • Disconnect Hood Ajar Switch C127 .

Does the PID read AJAR when the switch is disconnected?
Yes INSTALL a new hood latch.
REFER to: Hood Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).
No GO to A2

A2 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C127-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A3
No REPAIR the circuit.

A3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect all BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM, or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST B : THE ALARM SYSTEM DOES NOT ACTIVATE FROM THE INTRUSION SENSOR

Refer to Wiring Diagrams Cell 117 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Perimeter Anti-Theft Alarm - Component Location (419-01A Perimeter Anti-Theft Alarm, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B109F:01 Intrusion Sensor Module: General Electrical Failure Sets when the BCM detects a short to ground from the intrusion sensor LIN circuit.
BCM B109F:02 Intrusion Sensor Module: General Signal Failure Sets when the BCM detects a communication fault with the intrusion sensor.
BCM B109F:08 Intrusion Sensor Module: Bus Signal/Message Failures Sets when the BCM detects a communication fault with the intrusion sensor.
BCM B109F:97 Intrusion Sensor Module: Component Or System Operation Obstructed Or Blocked Sets when the intrusion sensor communicates to the BCM that it detects the motion sensor is blocked.
BCM B109F:9A Intrusion Sensor Module: Component or System Operating Conditions Sets when the BCM detects a communication fault with the intrusion sensor.

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Intrusion sensor
  • BCM

Visual Inspection and Pre-checks

  • Inspect the BCM fuse 9 (5A)
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
B1 CHECK FOR VOLTAGE TO THE INTRUSION SENSOR
  • Ignition OFF.
  • Disconnect Intrusion Sensor C9800 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C9800-1   Ground

Is the voltage greater than 11 volts?
Yes GO to B3
No VERIFY the BCM fuse 9 (5A) is OK. If OK, GO to B2
If not OK, REFER to the Wiring Diagrams manual to identify the possible cause of the circuit short.

B2 CHECK THE INTRUSION SENSOR VOLTAGE SUPPLY CIRCUIT FOR A OPEN
  • Disconnect BCM C2280C .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C9800-1   C2280C-15

Is the resistance less than 3 ohms?
Yes GO to B7
No REPAIR the circuit.

B3 CHECK THE INTRUSION SENSOR GROUND CIRCUIT FOR A OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C9800-1   C9800-3

Is the voltage greater than 11 volts?
Yes GO to B4
No REPAIR the circuit.

B4 CHECK THE INTRUSION SENSOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect BCM C2280E .
  • Disconnect Hands-Free Liftgate Actuation Module C4401 (if equipped).
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C9800-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to B5

B5 CHECK THE INTRUSION SENSOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C9800-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B6
No REPAIR the circuit.

B6 CHECK THE INTRUSION SENSOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C9800-2   C2280E-36

Is the resistance less than 3 ohms?
Yes INSTALL a new intrusion sensor.
REFER to: Intrusion Sensor (419-01A Perimeter Anti-Theft Alarm, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to B7
No REPAIR the circuit.

B7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect all BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM, or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST C : THE ALARM SYSTEM DOES NOT ARM OR NO TURN SIGNALS FLASH CONFIRMATION

Normal Operation and Fault Conditions

REFER to: Perimeter Anti-Theft Alarm - Component Location (419-01A Perimeter Anti-Theft Alarm, Description and Operation).

Possible Sources

  • Door ajar input
  • Hood switch input
  • Liftgate ajar input
  • Turn signal output
  • RKE transmitter concern
  • BCM
C1 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE BCM (BODY CONTROL MODULE) SELF-TEST

NOTE: DTC B1305:01 sets if the hood is open. Make sure the hood is closed prior to running the self-test.

  • Ignition ON.
  • Using a diagnostic scan tool, carry out the BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Chart in this section.
No GO to C2

C2 CHECK THE DOOR AJAR SWITCH INPUT
  • Close all the doors.
  • Observe the IPC.

Does the IPC indicate a door is ajar?
Yes DIAGNOSE the courtesy lamps staying on continuously.
REFER to: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).
No GO to C3

C3 MONITOR THE LIFTGATE AJAR SWITCH INPUT
  • Close the liftgate.
  • Observe the IPC.

Does the IPC indicate the liftgate is ajar?
Yes DIAGNOSE the incorrect liftgate ajar indication.
REFER to: Instrumentation, Message Center and Warning Chimes - Vehicles With: Head Up Display (HUD) (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).
No GO to C4

C4 VERIFY THE HAZARD FLASHER LAMP OPERATION
  • Ignition OFF.
  • Activate the hazard flasher lamp function and observe the turn signals.

Do all the turn signals flash on and off?
Yes GO to C5
No DIAGNOSE the inoperative turn signals.
REFER to: Turn Signal and Hazard Lamps (417-01 Exterior Lighting, Diagnosis and Testing).

C5 CHECK THE RKE (REMOTE KEYLESS ENTRY) TRANSMITTER FUNCTION
  • Using the RKE transmitter, lock and unlock the doors.

Do the doors lock and unlock?
Yes GO to C6
No DIAGNOSE the inoperative RKE transmitter.
REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).

C6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM, or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST D : B1305:01, B1305:11, B1305:15

Refer to Wiring Diagrams Cell 117 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Perimeter Anti-Theft Alarm - Component Location (419-01A Perimeter Anti-Theft Alarm, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B1305:01 Hood Switch: General Electrical Failure Sets when the BCM detects an open from the hood ajar switch input during a self-test.
BCM B1305:11 Hood Switch: Circuit Short To Ground Sets when the BCM detects a short to ground from the hood ajar switch input during a self-test.
BCM B1305:15 Hood Switch: Circuit Short To Battery Or Open Sets when the BCM detects a short to battery or open from the hood ajar switch input during a self-test.

Possible Sources

  • Wiring, terminals or connectors
  • Hood latch
  • BCM

Visual Inspection and Pre-checks

  • Inspect the hood latch for damage
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
D1 CHECK THE HOOD AJAR SWITCH
  • Disconnect Hood Ajar Switch C127 .
  • Ignition ON.
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C127-2   C127-1
  • Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC's still present?
Yes REMOVE the fused jumper wire. GO to D2
No REMOVE the fused jumper wire. INSTALL a new hood latch.
REFER to: Hood Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

D2 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C127-2   Ground

Is the voltage greater than 11 volts?
Yes GO to D3
No REPAIR the circuit.

D3 CHECK THE HOOD AJAR SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C127-2   C127-1

Is the voltage greater than 11 volts?
Yes GO to D4
No REPAIR the circuit.

D4 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C127-2   C2280F-14

Is the resistance less than 3 ohms?
Yes GO to D5
No REPAIR the circuit.

D5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM, or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST E : DTC (DIAGNOSTIC TROUBLE CODE) B109F:49

Normal Operation and Fault Conditions

REFER to: Perimeter Anti-Theft Alarm - System Operation and Component Description (419-01A Perimeter Anti-Theft Alarm, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B109F:49 Intrusion Sensor Module: Internal Electronic Failure Sets when the Intrusion Sensor Module detects a fault when there is an internal problem

Possible Sources

  • Incorrect response from Intrusion Sensor Module
E1 CHECK BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the BCM self-test.

Are there any other Diagnostic Trouble Codes (DTCs) Present ?
Yes DIAGNOSE all other Diagnostic Trouble codes (DTCs) first. Refer to DTC Chart in this section.
No INSTALL new Intrusion Sensor Module.
REFER to: Intrusion Sensor (419-01A Perimeter Anti-Theft Alarm, Removal and Installation).

PINPOINT TEST F : DTC (DIAGNOSTIC TROUBLE CODE) B109F:55

Normal Operation and Fault Conditions

REFER to: Perimeter Anti-Theft Alarm - System Operation and Component Description (419-01A Perimeter Anti-Theft Alarm, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B109F:55 Intrusion Sensor Module: Not Configured Sets when the Intrusion Sensor Module detects a fault when there is no ID stored in the BCM.

Possible Sources

  • Incorrect response from Intrusion Sensor Module
  • There is no Intrusion Sensor Module ID stored in the BCM memory
F1 CHECK BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the BCM self-test.

Are there any other Diagnostic Trouble Codes (DTCs) Present ?
Yes DIAGNOSE all other Diagnostic Trouble codes (DTCs) first.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
No Using a diagnostic scan tool, CARRY OUT the LIN New Module Initialization procedure (Toolbox>BCM>LIN New Module Initialization).

PINPOINT TEST G : FALSE ALARM ACTIVATION

Normal Operation and Fault Conditions

REFER to: Perimeter Anti-Theft Alarm - System Operation and Component Description (419-01A Perimeter Anti-Theft Alarm, Description and Operation).

Possible Sources

  • Door ajar input
  • Hood switch input
  • Panic button pressed on a RKE transmitter
  • A valid PATS key read was NOT received when the ignition transitioned to RUN
G1 MONITOR THE BCM (BODY CONTROL MODULE) ALARM EVENT PID (PARAMETER IDENTIFICATION) 'S
  • Identify and isolate the cause of the last alarm activation.
    • 1st. Most Recent Alarm Trigger Event (ALARM_EVT_1)
    • 2nd. Most Recent Alarm Trigger Event (ALARM_EVT_2)
    • 3rd. Most Recent Alarm Trigger Event (ALARM_EVT_3)
    • 4th. Most Recent Alarm Trigger Event (ALARM_EVT_4)

Are there any BCM PID's present?
Yes For a PID value of "Panic" causing the false alarm event, the system is operating correctly at this time. INSTRUCT the customer in the correct operation of the panic alarm feature. REFER to "Panic Alarm" in the Owner's Literature.
For a PID value of "Door Ajar" causing the false alarm event, DIAGNOSE the ajar switches.
REFER to: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing). For a PID value "Hood Ajar" causing the false alarm event, diagnose the hood ajar switch. GO to Pinpoint Test D
No The system is operating correctly at this time.


    Description and Operation - Perimeter Anti-Theft Alarm - System Operation and Component Description

    System Operation System Diagram Item Description 1 BCM 2 Turn Signals 3 Hood Ajar Switch 4 Liftgate Ajar Switch 5 IPC 6 Courtesy Lamps 7 Passive Key 8 RTM 9 RGTM 10 GWM 11 GWM 12 Intrusion Sensor 13 Horn 14 DLC 15 DCME (Left Front Door) 16 Door Ajar Switch 17 Power Liftgate 18 Manual Liftgate 19 DCMF (Right Front Door) 20 Door Ajar Switch 21 DCMG (Left Rear Door) 22 Door Ajar Switch 23 DCMH (Right Rear Door) 24 Door Ajar Switch 25 DDM 26 PDM Network Message Chart   BCM Network Input Messages Broadcast Message Originating Module Message Purpose RKE data   RTM Used by the BCM to arm/disarm the perimeter alarm or to activate/deactivate the panic alarm...

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