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 SYNC® System, Voice Recognition, ACM, and APIM.
Possible Sources
Customer's setting Wiring, terminals, or connectors APIM ACM
PINPOINT TEST R : ALL APIM (SYNC MODULE) MONO OUTPUTS ARE INOPERATIVE OR DO NOT
OPERATE CORRECTLY
R1 CHECK THE AUDIBLE PROMPT FUNCTIONALITY
Operate the audio system in AM/ FM mode. Operate the VOICE steering wheel switch and listen for the SYNC® audible prompt.
Does the SYNC® system produce an audible prompt correctly; indicating voice recognition mode has been entered?
Yes | The system is operating correctly at this time. INSTRUCT the customer in the correct operation of the audible prompt feature. REFER to "SYNC® Voice Recognition Feature" in the Owner's Literature. |
|---|---|
No | GO to R2 |
R2 CHECK THE OPERATION OF THE RH (RIGHT-HAND) LOWER STEERING WHEEL SWITCHES
Operate the audio system in AM/ FM mode. Operate the VOLUME +/-, SEEK +/END CALL, SEEK-/SEND CALL/RECEIVE CALL, VOICE, and MUTE steering wheel switches.
Do the VOLUME +/-, SEEK +/END CALL, SEEK-/SEND CALL/RECEIVE CALL, VOICE, and MUTE steering wheel switches operate correctly?
Yes | GO to R3 |
|---|---|
No | GO to Pinpoint Test X |
R3 CHECK FOR AN AC (ALTERNATING CURRENT) VOLTAGE SIGNAL ON THE APIM (SYNC MODULE) MONO OUTPUT CIRCUITS TO THE ACM (AUDIO FRONT CONTROL MODULE)
NOTICE: This pinpoint test step directs testing circuits using a back-probe method. Use the special back-probe tool POM6411. Do not force test leads or other probes into connectors. Adequate care must be exercised to avoid connector terminal damage, while ensuring that good electrical contact is made with the circuit or terminal. Failure to follow these instructions may cause damage to wiring, terminals, or connectors, and may cause subsequent electrical faults.
Operate the audio system in AM/ FM mode. While back-probing ACM C240B, measure the AC voltage while repeatedly operating the VOICE steering wheel switch.
Click to display connectors
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.