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 | B1A85:11 | Ambient Light Sensor: Circuit Short To Ground | GO to Pinpoint Test A |
BCM | B1A85:13 | Ambient Light Sensor: Circuit Open | GO to Pinpoint Test A |
Global Customer Symptom Code (GCSC) 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).
Symptom | Action |
---|---|
Lighting/Glass/Vision > Exterior Lighting > Headlamp > Inoperative | GO to Pinpoint Test A |
Lighting/Glass/Vision > Exterior Lighting > Headlamp > Stays On | GO to Pinpoint Test A |
Symptom Charts
Symptom Chart: Autolamps
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 | Actions |
---|---|
A module does not respond to the diagnostic scan tool |
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
The autolamps are inoperative or do not operate correctly | GO to Pinpoint Test A |
Pinpoint Tests
Refer to Wiring Diagrams Cell 86 for schematic and connector information. Normal Operation and Fault Conditions
REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
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A1 CHECK THE MANUAL HEADLAMP OPERATION | ||||||||||||||||
Do the headlamps operate correctly?
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A2 CHECK FOR VOLTAGE TO THE LIGHT SENSOR | ||||||||||||||||
Is the voltage approximately 5 volts?
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A3 CHECK THE LIGHT SENSOR FOR GROUND | ||||||||||||||||
Is the voltage approximately 5 volts?
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A4 CHECK THE LIGHT SENSOR GROUND CIRCUIT FOR AN OPEN | ||||||||||||||||
Is the resistance less than 3 ohms?
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A5 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO GROUND | ||||||||||||||||
Is the resistance greater than 10,000 ohms?
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A6 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR AN OPEN | ||||||||||||||||
Is the resistance less than 3 ohms?
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A7 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO VOLTAGE | ||||||||||||||||
Is any voltage present?
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A8 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION | ||||||||||||||||
Is the concern still present?
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Locating the Under Hood Fuse Box
Accessing the Under Hood Fuse Box
Pull the latch toward you and remove the top cover.