Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
AM/ FM antenna coaxial cable shield at the ACM | Ground |
Is the resistance less than 1 ohm?
Yes | GO to B20 |
|---|---|
No | GO to B19 |
B19 CHECK THE AM (AMPLITUDE MODULATION) / FM (FREQUENCY MODULATION) ANTENNA UNIT SHIELD FOR CONTINUITY TO ANTENNA UNIT BASE
Remove the AM/ FM antenna. REFER to: Audio Unit Antenna (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Removal and Installation). Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
AM/ FM antenna unit shield at the antenna unit (component side) | AM/ FM antenna base (unpainted surface) |
Is the resistance less than 1 ohm?
Yes | INSPECT and REPAIR any corrosion on the RHR fender-mounted AM/ FM mast antenna base and/or vehicle mounting surface. REINSTALL the antenna and ensure the proper torque value is achieved. REFER to: Audio Unit Antenna (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Removal and Installation). |
|---|---|
No | INSTALL a new RHR fender-mounted AM/ FM mast antenna. REFER to: Audio Unit Antenna (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Removal and Installation). |
B20 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. REFER to: Audio Front Control Module (ACM) (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Removal and
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.