Lincoln Aviator 2020-2022 Service Manual / Electrical / Lighting / Exterior Lighting / Diagnosis and Testing - Parking, Rear and License Plate Lamps

Lincoln Aviator: Exterior Lighting / Diagnosis and Testing - Parking, Rear and License Plate Lamps

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 B10F3:11 Left Front Position Light:Circuit Short to Ground   GO to Pinpoint Test D
  BCM B10F3:15 Left Front Position Light:Circuit Short to Battery or Open   GO to Pinpoint Test D
  BCM B10F4:11 Right Front Position Light:Circuit Short to Ground   GO to Pinpoint Test D
  BCM B10F4:15 Right Front Position Light:Circuit Short to Battery or Open   GO to Pinpoint Test D
  BCM B1445:11 Rear Park Lamps Output:Circuit Short to Ground   GO to Pinpoint Test D
  BCM B1445:15 Rear Park Lamps Output:Circuit Short to Battery or Open   GO to Pinpoint Test D
  BCM B149E:11 Left Front Position/Sidemarker:Circuit Short To Ground   GO to Pinpoint Test D
  BCM B149E:15 Left Front Position/Sidemarker:Circuit Short To Battery or Open   GO to Pinpoint Test D
  BCM B149F:11 Right Front Position/Sidemarker:Circuit Short To Ground   GO to Pinpoint Test D
  BCM B149F:15 Right Front Position/Sidemarker:Circuit Short To Battery or Open   GO to Pinpoint Test D
  BCM B14A2:11 Tailgate/Liftgate Applique Lamps:Circuit Short To Ground   GO to Pinpoint Test D
  BCM B14A2:15 Tailgate/Liftgate Applique Lamps:Circuit Short To Battery or Open   GO to Pinpoint Test D
  BCM B14B2:11 Left Position Lamps:Circuit Short To Ground   GO to Pinpoint Test D
  BCM B14B2:15 Left Position Lamps:Circuit Short To Battery or Open   GO to Pinpoint Test D
  BCM B14B3:11 Right Position Lamps:Circuit Short To Ground   GO to Pinpoint Test D
  BCM B14B3:15 Right Position Lamps:Circuit Short To Battery or Open   GO to Pinpoint Test D
  BCM B14E4:01 Extra Enhanced Exterior Lighting System:General Electrical Failure   GO to Pinpoint Test E
  BCM B14E4:08 Extra Enhanced Exterior Lighting System:Bus Signal / Message Failure   GO to Pinpoint Test E
  BCM B14E4:1C Extra Enhanced Exterior Lighting System:Circuit Voltage Out of Range   GO to Pinpoint Test E
  BCM B14E4:49 Extra Enhanced Exterior Lighting System:Internal Electronic Failure   GO to Pinpoint Test E
  BCM B14E4:55 Extra Enhanced Exterior Lighting System:Not Configured   GO to Pinpoint Test E
  BCM B14E4:61 Extra Enhanced Exterior Lighting System:Signal Calculation Failure   GO to Pinpoint Test E

Symptom Charts

Symptom Chart: Parking, Rear and License Plate Lamps

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).

Condition Possible Sources Actions
A module does not respond to the diagnostic scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Module
 
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The Lincoln grille emblem lamp is inoperative or always on Refer to the Pinpoint Test   GO to Pinpoint Test A
An individual front side marker lamp only does not operate correctly Refer to the Pinpoint Test   GO to Pinpoint Test B
One or more front parking lamps do not operate correctly Refer to the Pinpoint Test   GO to Pinpoint Test C
One or more rear parking or license plate lamps are inoperative or always on Refer to the Pinpoint Test   GO to Pinpoint Test D
One or more parking lamps does not increase illumination during approach detection Refer to the Pinpoint Test   GO to Pinpoint Test E

Pinpoint Tests


PINPOINT TEST A : THE LINCOLN GRILLE EMBLEM LAMP IS INOPERATIVE OR ALWAYS ON

Refer to Wiring Diagrams Cell 85 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

Possible Sources

  • Lincoln grill emblem
  • Wiring, terminals or connectors
  • BCM

Visual Inspection and Pre-checks

  • Inspect the grill emblem for damage
A1 CHECK FOR SUPPLY VOLTAGE TO THE GRILL EMBLEM LAMP
  • Ignition OFF.
  • Disconnect: Signature Lamp (grill emblem) C1889.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1889-1   Ground

Is the voltage greater than 11 volts?
Yes GO to A3
No VERIFY BCMC fuse 128 (15A) is OK. If OK, GO to A2 If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

A2 CHECK GRILL EMBLEM LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: BCMC C1035B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1889-1   C1035B-10

Is the resistance less than 3 ohms?
Yes GO to A7
No REPAIR the circuit.

A3 CHECK THE GRILL EMBLEM LAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1889-1   C1889-2

Is the voltage greater than 11 volts?
Yes GO to A4
No REPAIR the circuit.

A4 CHECK FOR SIGNAL VOLTAGE TO THE GRILL EMBLEM LAMP
  • Place the headlamp switch in the PARKLAMPS position.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1889-3   Ground

Is the voltage approximately 4 volts?
Yes INSTALL a new grill emblem.
No GO to A5

A5 CHECK GRILL EMBLEM LAMP SIGNAL CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: LH Headlamp C1284A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1889-3   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A6
No REPAIR the circuit.

A6 CHECK GRILL EMBLEM LAMP SIGNAL CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1889-3   C1284A-9

Is the resistance less than 3 ohms?
Yes INSTALL a new top mounted headlamp LED control module.
REFER to: Light Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit.

A7 CHECK FOR CORRECT BCMC (BODY CONTROL MODULE C) OPERATION
  • Disconnect and inspect all BCMC 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 BCMC 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 BCMC.
REFER to: Body Control Module C (BCMC) (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 : AN INDIVIDUAL FRONT SIDE MARKER LAMP ONLY DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 92 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • Headlamp assembly
  • Top mounted headlamp LED control module
  • BCM
B1 CHECK THE FOR VOLTAGE TO THE FRONT SIDE MARKER LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH Front Side Marker Lamp C1127 or RH Front Side Marker Lamp C1126.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1127-1   Ground

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1126-1   Ground

Is the voltage greater than 11 volts?
Yes GO to B2
No GO to B3

B2 CHECK THE FRONT SIDE MARKER LAMP GROUND CIRCUIT
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1127-1   C1127-2

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1126-1   C1126-2

Is the voltage greater than 11 volts?
Yes INSTALL a new front side marker lamp.
No REPAIR the circuit.

B3 CHECK THE FRONT SIDE MARKER LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: For LH front side marker lamp, LH Headlamp C1021A.
  • Disconnect: For RH front side marker lamp, RH Headlamp C1041A.
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1127-1   C1021A-14

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1126-1   C1041A-14

Is the resistance less than 3 ohms?
Yes GO to B4
No REPAIR the circuit in question.

B4 CHECK VOLTAGE CIRCUIT TO THE FRONT SIDE MARKER LAMP FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors

      LHFront Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1127-1   Ground

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1126-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B5
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

B5 CHECK THE TOP MOUNTED HEADLAMP LED (LIGHT EMITTING DIODE) CONTROL MODULE
  • Substitute the known good top mounted headlamp LED control module from the opposite headlamp.
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the BCM LIN New Module Initialization.
  • Clear the Diagnostic Trouble Codes (DTCs), Repeat the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. Test the system for normal operation.

Does the suspect front turn lamp operate correctly?
Yes REMOVE the known good top mounted headlamp LED control module. INSTALL a new top mounted headlamp LED control module.
REFER to: Light Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good top mounted headlamp LED control module. INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).

PINPOINT TEST C : ONE OR MORE FRONT PARKING LAMPS DO NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 92 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • Headlamp assembly
  • Top mounted headlamp LED control module
  • BCM
C1 DETERMINE IF ALL THE PARKING LAMPS ARE INOPERATIVE OR ALWAYS ON
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.

Are all the front side marker and parking lamps inoperative or always on?
Yes GO to C2
No If only the LH or the RH side marker lamp is inoperative or always on, GO to Pinpoint Test B
If only the LH LED daytime running lamp/front parking and side marker lamps or the RH LED daytime running lamp/front parking and side marker lamps do not operate correctly, GO to C4

C2 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Disconnect: LH Headlamp C1284A and RH Headlamp C1285A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280F-15   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to C3

C3 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280F-15   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to C4
No REPAIR the circuit.

C4 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • For all LED daytime running lamp/front parking and side marker lamps, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280F-15   C1284A-5
  • For only the LH LED daytime running lamp/front parking and side marker lamps or the RH LED daytime running lamp/front parking and side marker lamps do not operate correctly, measure:
    Click to display connectors

      LH LED Daytime Running Lamp/Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C2280F-15   C1284A-5

    Click to display connectors

      RH LED Daytime Running Lamp/Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C2280F-15   C1285A-5

Is the resistance less than 3 ohms?
Yes For all LED daytime running lamp/front parking and side marker lamps, do not operate correctly, GO to C6
For only the LH LED daytime running lamp/front parking and side marker lamps or the RH LED daytime running lamp/front parking and side marker lamps do not operate correctly, GO to C5
No REPAIR the circuit.

C5 CHECK THE TOP MOUNTED HEADLAMP LED (LIGHT EMITTING DIODE) CONTROL MODULE
  • Substitute the known good top mounted headlamp LED control module from the opposite headlamp.
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the BCM LIN New Module Initialization.
  • Clear the Diagnostic Trouble Codes (DTCs), Repeat the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. Test the system for normal operation.

Does the suspect front turn lamp operate correctly?
Yes REMOVE the known good top mounted headlamp LED control module. INSTALL a new top mounted headlamp LED control module.
REFER to: Light Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good top mounted headlamp LED control module. INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).

C6 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 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 : ONE OR MORE REAR PARKING OR LICENSE PLATE LAMPS ARE INOPERATIVE

Refer to Wiring Diagrams Cell 92 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B10F3:11 Left front position light: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH rear parking lamps output circuit.
BCM B10F3:15 Left front position light: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the LH rear parking lamps output circuit.
BCM B10F4:11 Right front position light: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH rear parking lamps output circuit.
BCM B10F4:15 Right front position light: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the RH rear parking lamps output circuit.
BCM B1445:11 Rear Park Lamps Output: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the license plate and liftgate parking lamp output circuit.
BCM B1445:15 Rear Park Lamps Output: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the license plate and liftgate parking lamp output circuit.
BCM B149E:11 Left Front Position/Sidemarker: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH rear parking lamps output circuit.
BCM B149E:15 Left Front Position/Sidemarker: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the LH rear parking lamps output circuit.
BCM B149F:11 Right Front Position/Sidemarker: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH rear parking lamps output circuit.
BCM B149F:15 Right Front Position/Sidemarker: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the RH rear parking lamps output circuit.
BCM B14A2:11 Tailgate/Liftgate Applique Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the license plate lamps output circuit.
BCM B14A2:15 Tailgate/Liftgate Applique Lamps: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the license plate lamps output circuit.
BCM B14B2:11 Left Position Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH rear parking lamp output circuit.
BCM B14B2:15 Left Position Lamps: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the LH rear parking marker lamp output circuit.
BCM B14B3:11 Right Position Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH rear parking lamp output circuit.
BCM B14B3:15 Right Position Lamps: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the RH rear parking lamp output circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Rear lamp assembly
  • Reversing lamp assembly
  • BCM
D1 DETERMINE IF ALL THE REAR PARKING LAMPS ARE INOPERATIVE
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.

Are all license plate lamps, rear side marker lamps and the liftgate parking lamp inoperative?
Yes GO to D12
No If any license plate lamps, rear side marker lamps or the liftgate parking lamp is always on, GO to D2
If the liftgate parking lamp (part of the reversing lamp) or an individual license plate lamp or rear side marker lamp is inoperative, GO to D3
If all liftgate parking lamp, license plate lamp and/or rear side marker lamps are inoperative, GO to D5
If both rear parking lamps are inoperative, GO to D12
If one rear parking lamp are inoperative, GO to D7

D2 CHECK THE BCM (BODY CONTROL MODULE) PARKING LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280F (For rear parking lamps).
  • Disconnect: BCM C2280C (For license plate, rear side marker and liftgate parking lamps).
  • Ignition ON.

Do the parking lamps continue to illuminate?
Yes REPAIR the circuit in question.
No GO to D12

D3 CHECK THE INOPERATIVE LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative parking lamp.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • For an inoperative license plate lamp, measure:
    Click to display connectors

      LH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C452-1   Ground

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-1   Ground
  • For an inoperative rear side marker lamp, measure:
    Click to display connectors

      LH Rear Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C4422-1   Ground

    Click to display connectors

      RH Rear Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C4423-1   Ground
  • For inoperative liftgate parking lamp, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C446-3   Ground

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

D4 CHECK THE INOPERATIVE LAMP GROUND CIRCUIT FOR AN OPEN
  • For an inoperative license plate lamp, measure:
    Click to display connectors

      LH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C452-1   C452-2

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-1   C462-2
  • For an inoperative rear side marker lamp, measure:
    Click to display connectors

      LH Rear Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C4422-1   C4422-2

    Click to display connectors

      RH Rear Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C4423-1   C4423-2
  • For inoperative liftgate parking lamp, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C446-3   C446-2

Is the voltage greater than 11 volts?
Yes INSTALL a new parking lamp or reversing lamp assembly.
No REPAIR the circuit.

D5 CHECK THE LAMP SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: LH Rear Side Marker Lamp C4422.
  • Disconnect: RH Rear Side Marker Lamp C4423.
  • Disconnect: LH License Plate Lamp C452.
  • Disconnect: RH License Plate Lamp C462.
  • Disconnect: Reversing Lamp C446.
  • Disconnect: BCM C2280C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280C-11   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to D6
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

D6 CHECK THE LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280C-11   C4422-1

Is the resistance less than 3 ohms?
Yes GO to D12
No REPAIR the circuit in question.

D7 CHECK THE FOR VOLTAGE TO THE REAR PARKING LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH Rear Lamp C414 or RH Rear Lamp C417.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-2   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-2   Ground

Is the voltage greater than 11 volts?
Yes GO to D9
No GO to D8

D8 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE REAR PARKING LAMP
  • Place the headlamp switch in the OFF position.
  • Using a diagnostic scan tool, perform the BCM self-test.
  • Clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test (required to enable the lamp output driver).
  • Ignition OFF.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-2   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-2   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new rear lamp assembly.
REFER to: Rear Lamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No GO to D10

D9 CHECK THE REAR PARKING LAMP GROUND CIRCUIT
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-2   C414-1

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-2   C417-1

Is the voltage greater than 11 volts?
Yes INSTALL a new rear lamp assembly.
REFER to: Rear Lamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit.

D10 CHECK THE REAR PARKING LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-2   C2280F-30

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-2   C2280F-37

Is the resistance less than 3 ohms?
Yes GO to D11
No REPAIR the circuit.

D11 CHECK VOLTAGE CIRCUIT TO THE REAR PARKING LAMP FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-2   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to D12
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

D12 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 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 : ONE OR MORE PARKING LAMPS DOES NOT INCREASE ILLUMINATION DURING APPROACH DETECTION

Refer to Wiring Diagrams Cell 92 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B14E4:01 Extra Enhanced Exterior Lighting System: General Electrical Failure A continuous memory and on-demand DTC that sets when the BCM detects an internal failure from the rear lamp fade control module.
BCM B14E4:08 Extra Enhanced Exterior Lighting System: Bus Signal/Message Failures A continuous memory and on-demand DTC that sets when the BCM detects a message failure from the rear lamp fade control module.
BCM B14E4:1C Extra Enhanced Exterior Lighting System: Circuit Voltage Out Of Range An on-demand DTC that sets when the BCM detects a an internal failure from the rear lamp fade control module.
BCM B14E4:49 Extra Enhanced Exterior Lighting System: Internal Electronic Failure A continuous memory and on-demand DTC that sets when the BCM detects an internal failure from the rear lamp fade control module.
BCM B14E4:55 Extra Enhanced Exterior Lighting System: Not Configured A continuous memory and on-demand DTC that sets when the BCM detects the rear lamp fade control module is not configured.
BCM B14E4:61 Extra Enhanced Exterior Lighting System: Signal Calculation Failure An on-demand DTC that sets when the BCM detects a an internal failure from the rear lamp fade control module.

Possible Sources

  • Wiring, terminals or connectors
  • Low beams concern
  • Rear lamp fade control module
  • BCM
E1 CHECK APPROACH DETECTION OPERATION
  • Ignition OFF.
  • Make sure the liftgate and all the doors are closed and locked and all valid programmed passive keys are outside of the area of detection (more than 10 feet) longer than 60 seconds.
  • While observing the operation of the front and rear parking lamps approach the vehicle.

Do any parking lamps increase in brightness when you approach near the vehicle?
Yes If only a front parking lamp does not illuminate, INSTALL a new top mounted headlamp LED control module.
REFER to: Light Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation). If only a single rear parking lamp does not illuminate, GO to E4
If only a single license plate or liftgate parking lamp does not illuminate,
If all license plate or liftgate parking lamps do not illuminate, GO to E7
If all rear parking, license plate and liftgate parking lamps do not illuminate, GO to E10
No GO to E2

E2 CHECK THAT APPROACH DETECTION IS ENABLED
  • Check if the approach detection is enabled through the IPC message center.

Is approach detection enabled?
Yes DIAGNOSE for the approach detection feature is inoperative.
REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).
No ENABLE approach detection. REFER to the Owner's Literature for information on enabling approach detection

E3 CHECK THE REAR LAMP FADE CONTROL MODULE INOPERATIVE PWM (PULSE WIDTH MODULATION) CIRCUIT FOR AN OPEN
  • Disconnect: Rear Lamp Fade Control Module C480.
  • Disconnect: Inoperative LH License Plate Lamp C452.
  • Disconnect: Inoperative RH License Plate Lamp C462.
  • Disconnect: Inoperative Reversing Lamp C446.
  • Measure:
    Click to display connectors

      LH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C452-3   C480-7

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-3   C480-7

    Click to display connectors

      Reversing Lamp


    Positive Lead Measurement / Action Negative Lead
      C446-4   C480-7

Is the resistance less than 3 ohms?
Yes INSTALL a new parking lamp or reversing lamp assembly.
No REPAIR the circuit.

E4 CHECK THE REAR LAMP FADE CONTROL MODULE PWM (PULSE WIDTH MODULATION) CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect: Rear Lamp Fade Control Module C480.
  • Disconnect: Inoperative LH Rear Lamp C414.
  • Disconnect: Inoperative RH Rear Lamp C417.
  • Ignition ON.
  • Measure:
    Click to display connectors

      LH Rear Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-6   Ground

    Click to display connectors

      RH Rear Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-6   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to E5

E5 CHECK THE REAR LAMP FADE CONTROL MODULE PWM (PULSE WIDTH MODULATION) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors

      LH Rear Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-6   Ground

    Click to display connectors

      RH Rear Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-6   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to E6
No REPAIR the circuit.

E6 CHECK THE REAR LAMP FADE CONTROL MODULE PWM (PULSE WIDTH MODULATION) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH Rear Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-6   C480-5

    Click to display connectors

      RH Rear Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-6   C480-6

Is the resistance less than 3 ohms?
Yes INSTALL a new rear lamp fade control module.
REFER to: Rear Lamp Fade Control Module (417-01 Exterior Lighting, Removal and Installation).
TEST the system for normal operation. If the condition still exists INSTALL a new rear lamp assembly. REFER to: Rear Lamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit.

E7 CHECK THE REAR LAMP FADE CONTROL MODULE LICENSE PLATE AND LIFTGATE PARKING LAMP PWM (PULSE WIDTH MODULATION) CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect: Rear Lamp Fade Control Module C480.
  • Disconnect: LH License Plate Lamp C452.
  • Disconnect: RH License Plate Lamp C462.
  • Disconnect: Reversing Lamp C446.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-7   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to E8

E8 CHECK THE REAR LAMP FADE CONTROL MODULE LICENSE PLATE AND LIFTGATE PARKING LAMP PWM (PULSE WIDTH MODULATION) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-7   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to E9
No REPAIR the circuit.

E9 CHECK THE REAR LAMP FADE CONTROL MODULE LICENSE PLATE AND LIFTGATE PARKING LAMP PWM (PULSE WIDTH MODULATION) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C446-4   C480-7

Is the resistance less than 3 ohms?
Yes INSTALL a new rear lamp fade control module.
REFER to: Rear Lamp Fade Control Module (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit.

E10 CHECK FOR VOLTAGE TO THE REAR LAMP FADE CONTROL MODULE
  • Disconnect: Rear Lamp Fade Control Module C480.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-1   Ground

Is the voltage greater than 11 volts?
Yes GO to E14
No GO to E11

E11 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE REAR LAMP FADE CONTROL MODULE
  • Place the headlamp switch in the OFF position.
  • Using a diagnostic scan tool, perform the BCM self-test.
  • Clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test (required to enable the lamp output driver).
  • Ignition OFF.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-1   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new rear lamp fade control module.
REFER to: Rear Lamp Fade Control Module (417-01 Exterior Lighting, Removal and Installation).
No GO to E12

E12 CHECK THE REAR LAMP FADE CONTROL MODULE VOLTAGE CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: BCM C2280B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to E13
No REPAIR the circuit in question. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If any BCM Diagnostic Trouble Codes (DTCs) other than DTC U3000:49 are present, CLEAR the Diagnostic Trouble Codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. TEST the system for normal operation.
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

E13 CHECK THE REAR LAMP FADE CONTROL MODULE VOLTAGE CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-1   C2280B-5

Is the resistance less than 3 ohms?
Yes GO to E16
No REPAIR the circuit in question.

E14 CHECK THE REAR LAMP FADE CONTROL MODULE GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-1   C480-8

Is the voltage greater than 11 volts?
Yes GO to E15
No REPAIR the circuit in question.

E15 CHECK THE REAR LAMP FADE CONTROL MODULE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Disconnect: BCM C2280F.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C480-2   C2280F-15

Is the resistance less than 3 ohms?
Yes INSTALL a new rear lamp fade control module.
REFER to: Rear Lamp Fade Control Module (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit.

E16 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 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.


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