Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021EXPEDITION PLATINUM, RWDREPAIR AND DIAGNOSISELECTRICALCHARGING SYSTEMSCHARGING SYSTEM - GENERAL INFORMATION
2021 Ford Expedition Platinum, RWD
Charging System - General Information
2021 Ford Expedition Platinum, RWDSECTION Charging System - General Information
- Description And Operation
- Diagnosis And Testing
- Charging System
- Diagnostic Trouble Code (DTC) Chart
- Global Customer Symptom Code (GCSC) Chart
- Inspection and Verification
- Symptom Chart(s)
- Pinpoint Tests
- Pinpoint Test A: System Voltage High
- Pinpoint Test B: System Voltage Low Or Battery Is Discharged
- Pinpoint Test C: Generator Noise Or Mechanical Performance
- Pinpoint Test D: Radio Interference
- Pinpoint Test E: Battery Monitoring Sensor Faults
- Pinpoint Test F: Generator Current Sensor Faults
- Pinpoint Test G: DTC P0620, P065B
- Pinpoint Test H: DTC P0625, P0626
- Pinpoint Test I: Load Shed Message Displays In Message Center
- Pinpoint Test J: Generator Clutch Component Test
- Pinpoint Test K: B11DB:49
- Pinpoint Test L: B11DB:55
- Charging System
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.