f150mods.us
FORScan codes, As-Built mods & how-tos for every Ford F-150
by VARØ Industries

Auxiliary external subwoofer output — F-150 FORScan mod (2015–2020)

Configures the ACM auxiliary output for an aftermarket sub and amp (e.g. Kicker).

Module
ACM — Audio Control Module (727)
Model years
2015 2016 2017 2018 2019 2020
Trim & equipment
  • Requires an aftermarket subwoofer and amplifier
Category
Audio/SYNC
Risk
Medium risk
FORScan setting
No named setting documented. Use As-Built Format.
As-Built
ACM 727-01-01: xxx8 xxxx xxxx
As published by the source below. Compare against your own backup; surrounding digits control other features.

Notes

One Gen 2 Raptor forum poster warns the subwoofer mod may affect auto stop/start and possibly battery management.

How to apply it

  1. Back up every module's As-Built data and keep the files somewhere safe.
  2. Connect FORScan with a battery maintainer on, ignition ON and engine OFF.
  3. Open Configuration and Programming, choose the ACM module, open As-Built Format and edit only the digit described by the source.
  4. Write, follow any module reset prompt, cycle the ignition, then confirm the feature and check for new trouble codes.

Sources

More ACM mods

ModModuleCategoryYearsRisk
Disable synthetic engine sound (ASE)
Turns off the Active Sound Enhancement engine noise piped through the speakers (EcoBoost trucks).
⚑ 2018+ Lariat and up may also need DSP 783-01-01
ACM Audio/SYNC 2015–2020 Low risk