T4 CHECK THE AUDIO INPUT JACK CIRCUITS FOR AN OPEN

No	REPAIR the circuit. TEST the system for normal operation.

Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2362-1		C2383-47
C2362-3		C2383-46
C2362-4		C2383-45

Are the resistances less than 3 ohms?

Yes	GO to T5
No	REPAIR the circuit in question. TEST the system for normal operation.

T5 ISOLATE THE AUDIO INPUT JACK

Connect: APIM C2383. Install a new audio input jack. REFER to: Audio Input Jack (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Removal and Installation). Connect: MIT 105-00120. Using the MIT 105-00120, attempt to play an audio file using the audio input jack.

Is the audio output OK for the audio input jack?

Yes	The system is operating correctly at this time. The concern was caused by an inoperative audio input jack.
No	GO to T6

T6 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF. Disconnect and inspect the APIM connector. 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 APIM connector. Make sure it seats and latches 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, PERFORM the APIM Hardware Test. Click here to access Guided Routine (APIM).
No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

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, PERFORM the APIM Hardware Test.

Click here to access Guided Routine (APIM).

The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Source reference 4186

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.