The LHR Quarter Panel Speaker Is Inoperative (Convertible)

this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ACM. REFER to: Audio Front Control Module (ACM) (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Refer to Wiring Diagrams Cell 132 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - System Operation and Component Description (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Description and Operation). See ACM.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions B1A04:01 Speaker #4: General Set by the ACM when a failure is detected on the LHR quarter panel Electrical Failure speaker circuits. B1A04:11 Speaker #4: Circuit Set by the ACM when a short to ground is detected on the LHR quarter Short To Ground panel speaker circuits. When DTC B1A04:11 is set, the speaker output is disabled. B1A04:12 Speaker #4: Circuit Set by the ACM when a short to voltage is detected on the LHR quarter Short To Battery panel speaker circuits. When DTC B1A04:12 is set, the speaker output is disabled. B1A04:13 Speaker #4: Circuit Set by the ACM when an open is detected on the LHR quarter panel Open speaker circuits.

Original table alignment retained · Scroll horizontally if needed

Possible Sources

Speaker Wiring, terminals, or connectors ACM

PINPOINT TEST O : THE LHR (LEFT-HAND REAR) QUARTER PANEL SPEAKER IS INOPERATIVE

(CONVERTIBLE)

O1 CHECK THE AUDIO SIGNAL TO THE LHR (LEFT-HAND REAR) QUARTER PANEL SPEAKER

Ignition OFF. Disconnect: LHR Quarter Panel Speaker C395. Operate the audio system in AM/ FM mode. Measure:

Click to display connectors

Source reference 4170

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.