LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2021 >> Edge ST-Line, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Charging System - General Information) >> Diagnosis And Testing >> Charging System - 6.7L Power Stroke Diesel >> Pinpoint Tests >> Pinpoint Test D : Radio Interference >> Pinpoint Test D : Radio Interference
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Pinpoint Test D : Radio Interference

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.

  1. D1 VERIFY THE GENERATOR IS THE SOURCE OF THE AUDIO SYSTEM INTERFERENCE

    • Start the engine.

    • Allow the engine to idle.

    • Tune the audio system to a station where interference is present.

    • Ignition OFF.

    • Disconnect Generator C102A .

    • Disconnect Generator C102B .

    • Start the engine.

    • Allow the engine to idle.

    Is the interference present with the generator disconnected? 

    Yes  CONTINUE diagnosis, REFER to: Information and Entertainment System Vehicles Without: SYNC . REFER to: Information and Entertainment System Vehicles With: Sony Audio System . REFER to: Information and Entertainment System Vehicles With: SYNC .
    No  INSTALL a new generator. REFER to: Generator - 6.7L Power Stroke Diesel .