Is the audio output OK for the audio input jack?

PINPOINT TEST T : THE AUDIO INPUT JACK IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

T1 RESET THE APIM (SYNC MODULE) AND RECHECK SYNC® SYSTEM OPERATION

Remove any devices connected to the USB port and audio input jack. Carry out an APIM power reset by disconnecting the battery for 1 minute, then reconnecting it. Wait at least 2 minutes for the APIM to re-initialize. Connect: MIT 105-00120. Using the MIT 105-00120, attempt to play an audio file using the audio input jack.

Yes	The system is operating correctly at this time. The concern was corrected by performing the APIM power reset. If the customer's device still does not operate correctly, the fault is with the customer's device.
No	GO to T2

T2 CHECK THE AUDIO INPUT JACK CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF. Disconnect: Audio Input Jack C2362. Disconnect: APIM C2383. Ignition ON. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2362-1		Ground
C2362-3		Ground
C2362-4		Ground

Is any voltage present?

Yes	REPAIR the circuit in question.
No	GO to T3

T3 CHECK THE AUDIO INPUT JACK CIRCUITS FOR A SHORT TO GROUND

Ignition OFF. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2362-1		Ground
C2362-3		Ground
C2362-4		Ground

Are the resistances greater than 10,000 ohms?

Yes	GO to T4

Source reference 4185

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.