417-01 Exterior Lighting 2013 - 2014 Fusion
Diagnosis and Testing Procedure revision date: 04/1/2013

Autolamps

DTC Chart: Body Control Module (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
B1A85:11 Ambient Light Sensor: Circuit Short To Ground   GO to Pinpoint Test B
B1A85:13 Ambient Light Sensor: Circuit Open   GO to Pinpoint Test B


Symptom Chart(s)

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: Autolamps

  Symptom Chart


Condition Possible Sources Actions
A module does not respond to the scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Module
 
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The autolamps are inoperative Refer to the Pinpoint Test   GO to Pinpoint Test A
The autolamps are on continuously Refer to the Pinpoint Test   GO to Pinpoint Test B


Pinpoint Tests

The Autolamps Are Inoperative


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

Normal Operation and Fault Conditions


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

Possible Sources


PINPOINT TEST A : THE AUTOLAMPS ARE INOPERATIVE
A1   CHECK THE MANUAL HEADLAMP OPERATION
  • Place the headlamp switch in the headlamps on and then off positions.

Do the headlamps operate correctly?

Yes GO to A2
No
REFER to: Headlamps (417-01 Exterior Lighting, Diagnosis and Testing).


A2   CHECK FOR VOLTAGE TO THE LIGHT SENSOR
  • Ignition OFF.
  • Disconnect: Light Sensor C286 (Dual Automatic Temperature Control (DATC)).
  • Disconnect: Light Sensor C287 (Electronic Manual Temperature Control (EMTC)).
  • Ignition ON.
  • Place the headlamp switch in the autolamps on position.
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   Ground




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   Ground



Is the voltage approximately 5 volts?

Yes INSTALL a new light sensor.
REFER to: Light Sensor (417-01 Exterior Lighting, Removal and Installation).
No GO to A3


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 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 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.



The Autolamps Are On Continuously


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

Normal Operation and Fault Conditions


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



  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1A85:11 Ambient Light Sensor: Circuit Short To Ground Sets when the BCM detects a short to ground from the light sensor input circuit.
B1A85:13 Ambient Light Sensor: Circuit Open Sets when the BCM detects an open or short to voltage from the light sensor input circuit.


Possible Sources

Visual Inspection and Diagnostic Pre-checks


PINPOINT TEST B : THE AUTOLAMPS ARE ON CONTINUOUSLY
B1   CHECK FOR BODY CONTROL MODULE (BCM) DIAGNOSTIC TROUBLE CODE (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B1A85:11 or B1A85:13 present?

Yes For DTC B1A85:11, GO to B3
For DTC B1A85:13, GO to B5
No GO to B2


B2   CHECK FOR VOLTAGE TO THE LIGHT SENSOR (NO DTC (DIAGNOSTIC TROUBLE CODE) )
  • Ignition OFF.
  • Disconnect: Light Sensor C286 (Dual Automatic Temperature Control (DATC)).
  • Disconnect: Light Sensor C287 (Electronic Manual Temperature Control (EMTC)).
  • Ignition ON.
  • Place the headlamp switch in the autolamps on position.
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   Ground




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   Ground



Is the voltage approximately 5 volts?

Yes INSTALL a new light sensor.
REFER to: Light Sensor (417-01 Exterior Lighting, Removal and Installation).
No GO to B10


B3   CHECK FOR VOLTAGE TO THE LIGHT SENSOR (DTC (DIAGNOSTIC TROUBLE CODE) B1A85:11)
  • Ignition OFF.
  • Disconnect: Light Sensor C286 (Dual Automatic Temperature Control (DATC)).
  • Disconnect: Light Sensor C287 (Electronic Manual Temperature Control (EMTC)).
  • Ignition ON.
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   Ground




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   Ground



Is the voltage approximately 5 volts?

Yes INSTALL a new light sensor.
REFER to: Light Sensor (417-01 Exterior Lighting, Removal and Installation).
No GO to B4


B4   CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: BCM C2280G.
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   Ground




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   Ground



Is the resistance greater than 10,000 ohms?

Yes GO to B10
No REPAIR the circuit.


B5   CHECK FOR VOLTAGE TO THE LIGHT SENSOR (DTC (DIAGNOSTIC TROUBLE CODE) B1A85:13)
  • Ignition OFF.
  • Disconnect: Light Sensor C286 (Dual Automatic Temperature Control (DATC)).
  • Disconnect: Light Sensor C287 (Electronic Manual Temperature Control (EMTC)).
  • Ignition ON.
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   Ground




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   Ground



Is the voltage approximately 5 volts?

Yes GO to B6
No GO to B8


B6   CHECK THE LIGHT SENSOR GROUND
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   C286-4




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   C287-4



Is the voltage approximately 5 volts?

Yes INSTALL a new light sensor.
REFER to: Light Sensor (417-01 Exterior Lighting, Removal and Installation).
No GO to B7


B7   CHECK THE LIGHT SENSOR GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: BCM C2280G.
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-4   C2280G-22




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-4   C2280G-22



Is the resistance less than 3 ohms?

Yes GO to B10
No REPAIR the circuit.


B8   CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280G.
  • Disconnect: run/start relay.
  • Connect:


    Positive Lead Measurement / Action Negative Lead

    Run/Start Relay Socket Pin 3

    Run/Start Relay Socket Pin 5


  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   Ground




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   Ground



Is any voltage present?

Yes REMOVE the fused jumper wire. REPAIR the circuit.
No REMOVE the fused jumper wire. GO to B9


B9   CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR AN OPEN
  • Measure:

      Dual Automatic Temperature Control (DATC)


    Positive Lead Measurement / Action Negative Lead
      C286-2   C2280G-24




      Electronic Manual Temperature Control (EMTC)


    Positive Lead Measurement / Action Negative Lead
      C287-2   C2280G-24



Is the resistance less than 3 ohms?

Yes GO to B10
No REPAIR the circuit.


B10   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 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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