MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Information and Entertainment Systems

Positive Lead Measurement / Action Negative Lead

415-00A General Information -Vehicles With AM-FM-CD-SYNC

2016 MustangReference 4,166 / 6,619HTML edition
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M3 CHECK THE AUDIO CIRCUITS TO THE RIGHT PARCEL SHELF SPEAKER FOR A SHORT TO GROUND

Ignition OFF. Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C485-1

Ground

C485-4

Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to M4

No

REPAIR the circuit in question.

M4 CHECK THE AUDIO CIRCUITS TO THE RIGHT PARCEL SHELF SPEAKER FOR AN OPEN

Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C485-1

C240A-24

C485-4

C240A-12

Are the resistances less than 3 ohms?

Yes

GO to M5

No

REPAIR the circuit in question.

M5 CHECK THE AUDIO CIRCUITS TO THE RIGHT PARCEL SHELF SPEAKER FOR A SHORT TOGETHER

Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C485-1

C485-4

Is the resistance greater than 10,000 ohms?

Yes

GO to M6

No

REPAIR the circuit in question.

M6 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION

Source reference 4166

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.