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 MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 346 (FOUR-WHEEL DRIVE SYSTEMS (2 OF 2))
2021 Ford Edge SE, 4WD
Section 346 (Four-Wheel Drive Systems (2 Of 2))
2021 Ford Edge SE, 4WDSECTION Section 346 (Four-Wheel Drive Systems (2 Of 2))
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnosis And Testing
- Four-Wheel Drive Systems - Raptor, Vehicles With: 4HI-LOC Torque on Demand Transfer Case
- Diagnostic Trouble Code (DTC) Chart
- Symptom Chart: Four-Wheel Drive Systems
- Symptom Chart -- NVH
- Pinpoint Tests
- Pinpoint Test A : Four-Wheel Drive (4WD) System Functional Test
- Pinpoint Test B : B11D9:16, B11D9:17, P0562:00, P0563:00
- Pinpoint Test C : Module Internal Fault
- Pinpoint Test D : DTC U300D:11
- Pinpoint Test E : IWE Solenoid - Electrical Fault
- Pinpoint Test F : Grinding / Clicking / Ratcheting Noise From Front Axle In 2H Mode Under Acceleration Or Heavy Loads
- Pinpoint Test G : Lost Communication With Another Module
- Pinpoint Test H : P1839, P1840, P1841
- Pinpoint Test I : Shift Motor Contact Plates
- Pinpoint Test J : P184A, P184B
- Pinpoint Test K : P1825, P1826 And P1827
- Pinpoint Test L : Missing Or Invalid Data Received From Another Module
- Pinpoint Test M : U2300
- Four-Wheel Drive Systems - Vehicles With: Electronic Shift Transfer Case
- DTC Chart: Transfer Case Control Module (TCCM)
- Symptom Chart
- Symptom Chart -- NVH
- Pinpoint Tests
- Pinpoint Test A : The Vehicle Does Not Shift Between 2H And 4H Correctly And/Or Grinding Noise Heard During 4WD Engagement At High Speeds
- Pinpoint Test B : The Front Axle Does Not Engage/Disengage Correctly
- Pinpoint Test C : The Transfer Case Jumps Out Of Gear
- Pinpoint Test D : Grinding / Clicking / Ratcheting Noise From Front Axle In 2H Mode Under Acceleration Or Heavy Loads
- Pinpoint Test E : The 4WD Does Not Engage At Speed Correctly
- Pinpoint Test F : Electronic Shift-On-The-Fly (ESOF) System Functional Test
- Pinpoint Test G : U0100
- Pinpoint Test H : U0121
- Pinpoint Test I : U0140
- Pinpoint Test J : DTCS P0562:00 Or P0563:00
- Pinpoint Test K : DTC U0101
- Pinpoint Test L : Shift Motor - Electrical Or Mechanical Fault
- Pinpoint Test M : DTCS P1812:00, P1815:00
- Pinpoint Test N: Grinding / Clicking / Ratcheting Noise From Front Axle In 2H Mode Under Acceleration Or Heavy Loads
- Four-Wheel Drive Systems - Raptor, Vehicles With: 4HI-LOC Torque on Demand Transfer Case
- General Procedures
- Removal And Installation
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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.