Pinpoint Test O: The SYNC System Is Completely Inoperative
Information and Entertainment System
Pinpoint Tests
Pinpoint Test O: The SYNC System Is Completely Inoperative
Normal Operation
The Accessory Protocol Interface Module (APIM) receives voltage at all times from circuit SBP13 (GY/RD) and ground through circuit GD114 (BK/BU). The wake-up signal is sent to the APIM by the Audio Control Module (ACM), via the Medium Speed Controller Area Network (MS-CAN). All audio sources except the AM/FM tuner and in-dash CD are provided to the ACM from the APIM. Satellite audio, if equipped, is routed through the APIM to the ACM.
If a USB mass storage device is used to play the audio file, the SYNC system only plays audio files that do not have Digital Rights Management (DRM) protection.
Note that the APIM self-test fails if a Universal Serial Bus (USB) device is plugged-in during the test. Make sure there are no USB devices plugged into the USB port when the APIM self-test is run.
U0184-U0256:
This pinpoint test is intended to diagnose the following:
- Audio system concern
- Communication network concern
- Customer error
- Customer device
- APIM
PINPOINT TEST O: THE SYNC SYSTEM IS COMPLETELY INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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O1 CHECK THE AUDIO SYSTEM OPERATION
- Press the AUX button repeatedly until "SYNC Line In" appears on the FDIM display.
- Is "SYNC Line In" available on the FDIM display?
Yes
GO to O2.
No
GO to O3.
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O2 CHECK THE SYNC SYSTEM OPERATION
- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, test the audio output for the audio input jack, USB port and Bluetooth.
- Do all of the SYNC inputs function correctly?
Yes
The SYNC system is operating correctly. REVIEW the system operation with the customer. If the customer device still does not operate correctly, the fault is with the customer device.
No
If only some of the inputs are inoperative, GO to Symptom Chart - SYNC System to diagnose the observed symptom. SYNC System
If all inputs are inoperative, Go To Pinpoint Test T. Pinpoint Test T: Poor Quality/Distorted/No Sound While In SYNC Mode
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O3 CHECK FOR SCAN TOOL COMMUNICATION
- Carry out the network test using the scan tool.
- Does the APIM pass the network test?
Yes
GO to O4.
No
REFER to Information Bus.
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O4 CHECK FOR CORRECT APIM OPERATION
- Ignition OFF.
- Disconnect the APIM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pints
- 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.
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