SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 51 (MULTIFUNCTION ELECTRONIC MODULES)DIAGNOSIS AND TESTINGGENERIC FUNCTION MODULE 2 (GFM2)INSPECTION AND VERIFICATION
2021 Ford Edge SE, 4WD

Inspection and Verification

2021 Ford Edge SE, 4WDSECTION Inspection and Verification
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

NOTE: Except for GFM2 power, ground and HS-CAN, all wiring is provided by an upfitter. Refer to upfitter documentation for wiring and system operation.

Refer to Customer Access for schematic and connector information.

  1. Visually inspect for obvious signs of mechanical or electrical damage.
  2. Verify BJB fuse F91 (10A).
  3. Check the battery condition and state of charge. REFER to: Battery .
  4. If an obvious cause for an observed or reported concern is found, correct the cause before proceeding to the next step.
  5. Using a diagnostic scan tool, RETRIEVE all CMDTC.
  6. If the GFM2 fails the network test, REFER to: Communications Network .
  7. If any diagnostic trouble codes (DTCs) are retrieved, REFER to GFM2 DTC Chart .
  8. If no diagnostic trouble codes (DTCs) were retrieved, REFER to Symptom Chart .
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.