MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Information and Entertainment Systems

L9 CHECK THE LH (LEFT-HAND) AUDIO SIGNAL FROM THE ACM (AUDIO FRONT CONTROL

415-00B General Information -Vehicles With Touchscreen Display

2016 MustangReference 4,404 / 6,619HTML edition
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No

REPAIR the circuit in question.

L9 CHECK THE LH (LEFT-HAND) AUDIO SIGNAL FROM THE ACM (AUDIO FRONT CONTROL MODULE) TO THE AUDIO DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) MODULE FOR AN OPEN

Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C2385A-7

C240A-10

C2385A-8

C240A-22

Are the resistances less than 3 ohms?

Yes

GO to L10

No

REPAIR the circuit in question.

L10 CHECK THE LH (LEFT-HAND) AUDIO SIGNAL FROM THE ACM (AUDIO FRONT CONTROL MODULE) TO THE AUDIO DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) MODULE FOR A SHORT TOGETHER

Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C2385A-7

C2385A-8

Is the resistance greater than 10,000 ohms?

Yes

GO to L11

No

REPAIR the circuit in question.

L11 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all the ACM connectors. Repair:

Corrosion (clean module pins or install new connectors or terminals) Damaged or bent pins (install new terminals or pins) Pushed-out pins (install new pins as necessary)

Reconnect the ACM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present.

Is the concern still present?

Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for

this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ACM.

Source reference 4404

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.