The LHF A-pillar Tweeter Speaker Is Inoperative

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.

The LHF door speaker and LHF A-pillar tweeter speaker share the same audio signal.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Conditions B1A01:01 Speaker #1: General Set by the ACM when a failure is detected on the LHF door or LHF A-pillar Electrical Failure tweeter speaker circuits. B1A01:11 Speaker #1: Circuit Set by the ACM when a short to ground is detected on the LHF door or LHF Short To Ground A-pillar tweeter speaker circuits. When DTC B1A01:11 is set, the speaker output is disabled. B1A01:12 Speaker #1: Circuit Set by the ACM when a short to voltage is detected on the LHF door or LHF Short To Battery A-pillar tweeter speaker circuits. When DTC B1A01:12 is set, the speaker output is disabled. B1A01:13 Speaker #1: Circuit Set by the ACM when an open is detected on the LHF door or LHF A-pillar Open tweeter speaker circuits.

Original table alignment retained · Scroll horizontally if needed

Possible Sources

Speaker Wiring, terminals, or connectors ACM

PINPOINT TEST I : THE LHF (LEFT-HAND FRONT) A-PILLAR TWEETER SPEAKER IS INOPERATIVE

I1 CHECK THE AUDIO SIGNAL TO THE LHF (LEFT-HAND FRONT) A-PILLAR TWEETER SPEAKER

Ignition OFF. Disconnect: LHF A-pillar Tweeter Speaker C9063. Operate the audio system in AM/ FM mode. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C9063-1		C9063-3

The LHF A-pillar Tweeter Speaker Is Inoperative — original illustration 1, reference 4153Original colors & callouts · Select to enlarge

Source reference 4153

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.