Pinpoint Test X: The Universal Serial Bus (USB) Port Is Inoperative/Does Not Operate Correctly

Information and Entertainment System

Pinpoint Tests

Pinpoint Test X: The Universal Serial Bus (USB) Port Is Inoperative/Does Not Operate Correctly

Normal Operation

The Universal Serial Bus (USB) port is connected to the Accessory Protocol Interface Module (APIM) through the USB cable. The USB port can be used to play audio files, upload software from mass storage devices, or for connecting a media device.

If supported by the user device, the USB port can provide charging. Because of this feature, when a USB device is plugged into the USB port, the SYNC(R) system does not automatically switch to the device.

If a USB mass storage device is used to play an audio file, the SYNC(R) system only plays audio files that do not have Digital Rights Management (DRM) protection.

The USB cable and port are not serviceable separately.

- DTC B1252:04 (USB Port: System Internal Failure) - sets when the APIM detects any fault in the USB circuit. This can be caused by a fault in the USB cable or port or by the customer USB device.
- DTC B1252:11 ( USB Port: Circuit Short to Ground) - sets when the APIM detects a short to ground in the USB circuit.

This pinpoint test is intended to diagnose the following:

- Customer USB device
- USB cable and port
- APIM

PINPOINT TEST X: THE USB PORT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

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X1 CHECK THE USB CONNECTION

- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, attempt to play a file using the USB port.
- Does the audio file play successfully using the USB connection?

Yes
The SYNC(R) system is operating correctly. REVIEW the operation of the USB port with the customer. If the customer device still does not operate correctly, the fault is with the customer device.

No
GO to X2.

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X2 INSPECT THE USB CABLE

- Ignition OFF.
- Disconnect: USB Cable (At APIM).
- Inspect the USB cable for damage.
- Connect: USB Cable (At APIM).
- Ignition ON.
- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, attempt to play a file using the USB port.
- Does the audio file play successfully using the USB connection?

Yes
The concern was caused by the USB connection not being seated correctly. The system is now operating correctly. CLEAR the DTCs.

No
GO to X3.

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X3 RESET THE APIM AND RECHECK SYNC SYSTEM OPERATION

NOTE: Carrying out a Master Reset returns all preference settings to the factory defaults, erases all the phone book and call histories, and deletes any devices paired with the SYNC system.

- Carry out an APIM power reset by disconnecting the battery for 5 minutes, then reconnecting it.
- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, test the audio output for the audio input jack, USB port, and Bluetooth connection using the VOICE switch on the steering wheel controls to enter each mode.
- Do all of the SYNC inputs function correctly?

Yes
The SYNC system is operating correctly at this time. CARRY OUT a SYNC(R) system Master Reset. REFER to the Owner's Literature.

REVIEW the SYNC system operation with the customer. If the customer device still does not operate correctly, the fault is with the customer device.

No
If only the USB port is inoperative, GO to X4. If additional inputs are inoperative, GO to Symptom Chart - SYNC System Symptom Chart - SYNC(R) System to diagnose the observed symptom. If all inputs are inoperative, INSTALL a new APIM. REFER to Accessory Protocol Interface Module (APIM) Accessory Protocol Interface Module (APIM).

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X4 ISOLATE THE USB CABLE AND PORT

- Disconnect: Multi-Media Interface Tester.
- Install a new USB cable and port. Refer to Universal Serial Bus (USB) Cable and Port Universal Serial Bus (USB) Cable and Port.
- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, attempt to play a file using the USB port.
- Does the audio file play successfully using the USB connection?

Yes
The concern was caused by an inoperative USB cable. The system is now operating correctly. CLEAR the DTCs.

No
GO to X5.

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X5 CHECK FOR CORRECT APIM OPERATION

- Disconnect the APIM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the APIM connector and make sure it seats correctly.
- Wait 2 minutes for the APIM to re-initialize.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new APIM. REFER to Accessory Protocol Interface Module (APIM) Accessory Protocol Interface Module (APIM). TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs.

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