Pinpoint Test Z: The SYNC System Is Completely Inoperative
Information and Entertainment System
Pinpoint Tests
Pinpoint Test Z: The SYNC System Is Completely Inoperative
Normal Operation
When a button on the Front Controls Interface Module (FCIM) is pressed, a network message is broadcast to the APIM via the Medium Speed Controller Area Network (MS-CAN). The APIM takes the appropriate action and sends a status message to the Front Display Interface Module (FDIM) (vehicles without navigation) or the Audio Control Module (ACM) (vehicles with navigation) in order to update the display screen.
This pinpoint test is intended to diagnose the following:
- Audio system concern
- Communication network concern
- Customer error
- Customer device
- APIM
PINPOINT TEST Z: 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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Z1 CHECK FOR SCAN TOOL COMMUNICATION WITH THE APIM
- Carry out the network test using the scan tool.
- Does the APIM pass the network test?
Yes
GO to Z2.
No
REFER to Information Bus.
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Z2 CHECK THE 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.
- Connect: Multi-Media Interface Tester .
- Using the Multi-Media Interface Tester, test the audio output for the audio input jack, Universal Serial Bus (USB) port, and Bluetooth connection.
- Do all of the SYNC inputs function correctly?
Yes
The SYNC system is operating correctly at this time. CARRY OUT a SYNC 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 some of the inputs are inoperative, GO to Symptom Chart - SYNC System to diagnose the observed symptom. Symptom Chart - SYNC System
If all inputs are inoperative, GO to Z3.
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Z3 CHECK FOR CORRECT APIM OPERATION
- Ignition OFF.
- 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.
- 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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