Ford Ecosport Owners and Service Manuals

Ford Ecosport: Exterior Lighting / Diagnosis and Testing - Parking, Rear and License Plate Lamps

Ford Ecosport 2014-2024 Service and Repair Manual / Lighting / Exterior Lighting / Diagnosis and Testing - Parking, Rear and License Plate Lamps

DTC Chart: BCM

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).


  BCM DTC Chart


  DTC Description Action
B10F3:11 Left Front Position Light: Circuit Short to Ground   GO to Pinpoint Test A
B10F4:11 Right Front Position Light: Circuit Short to Ground   GO to Pinpoint Test A
B1445:11 Rear Park Lamps Output: Circuit Short to Ground   GO to Pinpoint Test A
B1445:15 Rear Park Lamps Output: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test A
  • If the lamp is always on, GO to Pinpoint Test C
B1447:11 Parklamp On Switch Input: Circuit Short to Ground  
REFER to: Headlamps (417-01 Exterior Lighting, Diagnosis and Testing).
B149E:11 Left Front Position/Sidemarker: Circuit Short To Ground   GO to Pinpoint Test A
B149E:15 Left Front Position/Sidemarker: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test A
  • If the lamp is always on, GO to Pinpoint Test C
B149F:11 Right Front Position/Sidemarker: Circuit Short To Ground   GO to Pinpoint Test A
B149F:15 Right Front Position/Sidemarker: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test A
  • If the lamp is always on, GO to Pinpoint Test C
B14B2:11 Left Position Lamps: Circuit Short To Ground   GO to Pinpoint Test A
B14B2:15 Left Position Lamps: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test A
  • If the lamp is always on, GO to Pinpoint Test C
B14B3:11 Right Position Lamps: Circuit Short To Ground   GO to Pinpoint Test A
B14B3:15 Right Position Lamps: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test A
  • If the lamp is always on, GO to Pinpoint Test C
B1538:11 Left Rear Position Lamp Output: Circuit Short To Ground   GO to Pinpoint Test A
B1538:15 Left Rear Position Lamp Output: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test A
  • If the lamp is always on, GO to Pinpoint Test C
B1539:11 Right Rear Position Lamp Output: Circuit Short To Ground   GO to Pinpoint Test A
B1539:15 Right Rear Position Lamp Output: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test A
  • If the lamp is always on, GO to Pinpoint Test C
U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The BCM cannot enable the output until the cause of the short is corrected. ADDRESS all other Diagnostic Trouble Codes (DTCs) first. After the cause of the concern is corrected, CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).
U3000:49 Control Module: Internal Electronic Failure The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the BCM can withstand. The cause of the excessive current draw MUST be corrected before a new BCM is installed. ADDRESS all other Diagnostic Trouble Codes (DTCs) first. After the cause of the concern is corrected, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).
For other BCM Diagnostic Trouble Codes (DTCs) -  
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

Symptom Chart(s)

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).


  Symptom Chart


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).
One or more front parking or side marker lamps are inoperative Refer to the Pinpoint Test   GO to Pinpoint Test A
One or more rear parking or license plate lamps are inoperative Refer to the Pinpoint Test   GO to Pinpoint Test B
The parking, rear or license plate lamps are on continuously Refer to the Pinpoint Test   GO to Pinpoint Test C
A daytime running/parking lamp does not dim with the parking lamps ON - vehicles equipped with daytime running/parking lamp Light Emitting Diodes (LEDs) Refer to the Pinpoint Test   GO to Pinpoint Test A
A daytime running/parking lamp does not brighten when the parking lamps are OFF - vehicles equipped with daytime running/parking lamp Light Emitting Diodes (LEDs) Refer to the Pinpoint Test   GO to Pinpoint Test C

Pinpoint Tests


PINPOINT TEST A: ONE OR MORE FRONT PARKING OR SIDE MARKER 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 front parking lamp 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 front 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 front parking lamp 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 front parking lamp 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 front parking lamp 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 front parking lamp 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 front 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 front parking 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 front 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 front parking lamp output circuit.
BCM U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information This DTC sets when the BCM has temporarily shut down the output driver. The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The BCM cannot enable the output until the cause of the short is corrected, the Diagnostic Trouble Codes (DTCs) have been cleared and a successful self-test is run. For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).
BCM U3000:49 Control Module: Internal Electronic Failure This DTC sets when the BCM has permanently shut down the output driver. The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the BCM can withstand. CORRECT the cause of the excessive current draw before installing a new BCM . For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).

Possible Sources

  • Bulb
  • Wiring, terminals or connectors
  • BCM
A1 DETERMINE IF ALL THE PARKING LAMPS ARE INOPERATIVE
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.

Are all the parking lamps inoperative?
Yes GO to A11
No If a front side marker lamp is inoperative or, if equipped, daytime running/parking lamp Light Emitting Diodes (LEDs) does not dim with the parking lamps ON, GO to A2
If a front parking lamp is inoperative, GO to A6

A2 CHECK FOR VOLTAGE TO THE HEADLAMP ASSEMBLY
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative, LH Headlamp C1284 or RH Headlamp C1285.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1284-7   Ground

    Click to display connectors

      RH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1285-7   Ground

Is the voltage greater than 11 volts?
Yes GO to A4
No GO to A3

A3 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE HEADLAMP ASSEMBLY
  • 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 if DTC U1000:00 is present).
  • Ignition OFF.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1284-7   Ground

    Click to display connectors

      RH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1285-7   Ground

Is the voltage greater than 11 volts?
Yes For an inoperative side marker lamp, INSTALL a new side marker lamp bulb.
For a daytime running/parking lampLight Emitting Diodes (LEDs) not dimming, INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No GO to A5

A4 CHECK THE HEADLAMP ASSEMBLY GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1284-7   C1284-16

    Click to display connectors

      RH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1285-7   C1285-16

Is the voltage greater than 11 volts?
Yes For an inoperative side marker lamp, INSTALL a new side marker lamp bulb.
For a daytime running/parking lamp Light Emitting Diodes (LEDs) not dimming, INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit.

A5 CHECK THE HEADLAMP ASSEMBLY SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280E.
  • Measure:
    Click to display connectors

      LH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1284-7   C2280E-14

    Click to display connectors

      RH Front Side Marker Or Daytime Running/Parking Lamp Light Emitting Diodes (LEDs)


    Positive Lead Measurement / Action Negative Lead
      C1285-7   C2280E-28

Is the resistance less than 3 ohms?
Yes GO to A11
No REPAIR the circuit in question.

A6 CHECK THE FOR VOLTAGE TO THE FRONT PARKING LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH Front Turn Lamp C156 or RH Turn Lamp C166.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C156-2   Ground

    Click to display connectors

      RH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C166-2   Ground

Is the voltage greater than 11 volts?
Yes GO to A8
No GO to A7

A7 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE FRONT 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 if DTC U1000:00 is present).
  • Ignition OFF.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C156-2   Ground

    Click to display connectors

      RH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C166-2   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new front park/turn lamp bulb.
REFER to: Front Turn Signal Lamp Bulb (417-01 Exterior Lighting, Removal and Installation).
No GO to A9

A8 CHECK THE FRONT PARKING LAMP GROUND CIRCUIT
  • Measure:
    Click to display connectors

      LH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C156-2   C156-3

    Click to display connectors

      RH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C166-2   C166-3

Is the voltage greater than 11 volts?
Yes INSTALL a new front park/turn lamp bulb.
REFER to: Front Turn Signal Lamp Bulb (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit.

A9 CHECK THE FRONT PARKING LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280E.
  • Measure:
    Click to display connectors

      LH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C156-2   C2280E-14

    Click to display connectors

      RH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C166-2   C2280E-7

Is the resistance less than 3 ohms?
Yes GO to A10
No REPAIR the circuit in question.

A10 CHECK VOLTAGE CIRCUIT TO THE FRONT PARKING LAMP FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors

      LH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C156-2   Ground

    Click to display connectors

      RH Front Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C166-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A11
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).

A11 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM and all related in-line 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 and all related in-line 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) 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: 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 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 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 lamp output circuit.
BCM B1538:11 Left Rear Position Lamp Output: 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 B1538:15 Left Rear Position Lamp 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 LH rear parking lamp output circuit.
BCM B1539:11 Right Rear Position Lamp Output: 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 B1539:15 Right Rear Position Lamp 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 RH rear parking lamp output circuit.
BCM U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information This DTC sets when the BCM has temporarily shut down the output driver. The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The BCM cannot enable the output until the cause of the short is corrected, the Diagnostic Trouble Codes (DTCs) have been cleared and a successful self-test is run. For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).
BCM U3000:49 Control Module: Internal Electronic Failure This DTC sets when the BCM has permanently shut down the output driver. The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the BCM can withstand. CORRECT the cause of the excessive current draw before installing a new BCM . For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).

Possible Sources

  • Bulb
  • Wiring, terminals or connectors
  • BCM
B1 DETERMINE IF ALL THE PARKING LAMPS ARE INOPERATIVE
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.

Are all the parking lamps inoperative?
Yes GO to B12
No If one or both license plate lamps are inoperative, GO to B2
If a rear parking lamp is inoperative, GO to B7

B2 CHECK FOR VOLTAGE TO THE LICENSE PLATE LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH License Plate Lamp C452 or RH License Plate Lamp C462.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C452-2   Ground

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-2   Ground

Is the voltage greater than 11 volts?
Yes GO to B4
No GO to B3

B3 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE LICENSE PLATE 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 if DTC U1000:00 is present).
  • Ignition OFF.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C452-2   Ground

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-2   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new license plate lamp.
No GO to B5

B4 CHECK THE LICENSE PLATE LAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH License Plate Lamp


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

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-2   C462-1

Is the voltage greater than 11 volts?
Yes INSTALL a new license plate lamp.
No REPAIR the circuit.

B5 CHECK THE LICENSE PLATE LAMP SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Measure:
    Click to display connectors

      LH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C452-2   Ground

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B6
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).

B6 CHECK THE LICENSE PLATE LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C452-2   C2280F-52

    Click to display connectors

      RH License Plate Lamp


    Positive Lead Measurement / Action Negative Lead
      C462-2   C2280F-52

Is the resistance less than 3 ohms?
Yes GO to B12
No REPAIR the circuit.

B7 CHECK THE FOR VOLTAGE TO THE REAR PARKING LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH Rear Lamp C412 or RH Rear Lamp C415.
  • 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
      C412-3   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C415-1   Ground

Is the voltage greater than 11 volts?
Yes GO to B9
No GO to B8

B8 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 if DTC U1000:00 is present).
  • 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
      C412-3   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C415-1   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new rear parking lamp bulb.
REFER to: Rear Lamp Bulb (417-01 Exterior Lighting, Removal and Installation).
No GO to B10

B9 CHECK THE REAR PARKING LAMP GROUND CIRCUIT
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C412-3   C412-2

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C415-1   C415-3

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

B10 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
      C412-3   C2280F-53

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C415-1   C2280F-48

Is the resistance less than 3 ohms?
Yes GO to B11
No REPAIR the circuit in question.

B11 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
      C412-3   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C415-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B12
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).

B12 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM and all related in-line 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 and all related in-line 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) 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 PARKING, REAR OR LICENSE PLATE LAMPS ARE ON CONTINUOUSLY

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 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 a short to voltage from the LH front parking lamp 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 a short to voltage from the RH front parking lamp output circuit.
BCM B1538:15 Left Rear Position Lamp Output: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects a short to voltage from the LH front parking lamp output circuit.
BCM B1539:15 Right Rear Position Lamp Output: Circuit Short To Battery Or Open A continuous memory and on-demand DTC that sets when the BCM detects a short to voltage from the RH front parking lamp output circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Low beams concern
  • BCM
C1 CHECK LOW BEAM HEADLAMP OPERATION
  • Ignition ON.
  • Place the headlamp switch in the OFF position.
  • Observe the operation of the LH and RH low beams.

Are the low beams illuminated?
Yes
REFER to: Headlamps (417-01 Exterior Lighting, Diagnosis and Testing).
No GO to C2

C2 CHECK THE BCM (BODY CONTROL MODULE) PARKING LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280E (For front parking lamps, or if equipped, daytime running/parking lamp Light Emitting Diodes (LEDs)).
  • Disconnect: BCM C2280F (For rear parking and license plate lamps).
  • Ignition ON.

Do the parking lamps continue to illuminate?
Yes REPAIR the affected circuit.
No GO to C3

C3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM and all related in-line 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 and all related in-line 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) 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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