Pinpoint Test Z: The Universal Serial Bus (USB) Port Is Inoperative/Does Not Operate Correctly
Information and Entertainment System
Pinpoint Tests
Pinpoint Test Z: 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 or upload software from mass storage devices, or for connecting a media device.
If supported by the user device, the USB can provide charging. Because of this feature, when a USB device is plugged into the USB port, the SYNC system does not automatically switch to the device.
If a USB mass storage device is used to play an audio file, SYNC 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 (V2) detects an over-temperature condition in the USB circuit. This can be caused by a fault in the USB cable and port, or by the customer USB device.
- DTC B1252:11 (USB Port: Circuit Short to Ground) - sets when the APIM (V2) detects an over-current condition in the USB circuit. This can be caused by a fault in the USB cable and port, or by the customer USB device.
- DTC U261C (USB #1 Device Error) - sets when the APIM (V1) detects an over-current or over-temperature condition in the USB circuit. This can be caused by a fault in the USB cable and port, or by the customer USB device.
This pinpoint test is intended to diagnose the following:
- Customer USB device
- USB cable and port
- APIM
PINPOINT TEST Z: THE USB PORT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
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Z1 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 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 Z2.
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Z2 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.
No
GO to Z3.
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Z3 ISOLATE THE USB CABLE AND PORT
- 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.
No
GO to Z4.
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Z4 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 any DTCs present.
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