Pinpoint Test F: The Satellite Audio Is Inoperative/Does Not Operate Correctly
Information and Entertainment System
Pinpoint Tests
Pinpoint Test F: The Satellite Audio Is Inoperative/Does Not Operate Correctly
Refer to Wiring Diagram Set 130, Audio System/Navigation for schematic and connector information. Diagrams By Number
Normal Operation
The Satellite Digital Audio Receiver System (SDARS) module receives voltage through circuit 729 (RD/WH), and ground through circuit 1204 (BK/OG). Digital signals are received by the satellite antenna and sent to the SDARS module, which then provides audio signals to the Audio Control Module (ACM). The SDARS module and the ACM communicate using the Medium Speed Controller Area Network (MS-CAN) through circuits 1847 (WH/OG) and 1848 (PK/OG).
It is important to note that a concern in the satellite radio antenna may cause the satellite audio to be inoperative. However, if there is a concern with the satellite radio antenna, DTCs B1031 or B1032 should set. Make sure to verify the integrity of the satellite radio antenna and cable before carrying out this pinpoint test.
- DTC U0184 (Lost Communication With Radio [ACM]) - sets when the SDARS module is missing messages from the ACM for greater than 5 seconds. This results in loss of satellite radio functionality.
- DTC U0193 (Lost Communication With Digital Audio Control Module [SDARS]) - sets when the ACM is missing messages from the SDARS module for greater than 5 seconds. This results in loss of satellite radio functionality.
This pinpoint test is intended to diagnose the following:
- Subscription status
- Wiring, terminals or connectors
- SDARS module
- ACM
PINPOINT TEST F: THE SATELLITE AUDIO IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
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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F1 VERIFY AN ACTIVE SUBSCRIPTION
- Operate the audio system in satellite audio mode and observe the display.
- Does the display read CALL SIRIUS?
Yes
The subscription has expired. INFORM the customer to contact Sirius to re-activate the subscription.
No
GO to F2.
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F2 CHECK FOR SATELLITE AUDIO DTCs
- Clear the ACM and SDARS module DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Carry out the ACM and SDARS module self-tests.
- Are any satellite audio system DTCs present?
Yes
For DTC B1031 or DTC B1032 , Go To Pinpoint Test G. Pinpoint Test G: Poor Reception/No Sound - Satellite Audio
For DTC U0184 or U0193, GO to F3.
For all other DTCs, REFER to DTC Charts. [1][2]Diagnostic Trouble Code Descriptions
No
GO to F3.
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F3 CHECK THE SATELLITE AUDIO OUTPUT
- Enter the following diagnostic mode on the scan tool: Electrical-->Audio-->Tones Test-->Satellite Digital Audio Receiver System.
- Are alternating LH/RH tones audible?
Yes
GO to F6.
No
GO to F4.
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F4 CHECK THE AUDIO CIRCUITS FROM THE SDARS MODULE FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: ACM C290a.
- Disconnect: SDARS Module C4344.
- Ignition ON.
- Measure the voltage between the SDARS module, harness side and ground as follows:
- Is any voltage present?
Yes
REPAIR the circuit in question. TEST the system for normal operation.
No
GO to F5.
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F5 CHECK THE AUDIO CIRCUITS FROM THE SDARS MODULE FOR AN OPEN OR SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between the SDARS module, harness side and the ACM, harness side; and between the SDARS module, harness side and ground as follows:
- Is the resistance less than 5 ohms between the SDARS module and the ACM, and greater than 10,000 ohms between the SDARS module and ground?
Yes
GO to F6.
No
REPAIR the circuit in question. TEST the system for normal operation.
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F6 ISOLATE THE SDARS MODULE
- Connect: ACM C290a.
- Install a new SDARS module. Refer to Satellite Digital Audio Receiver System (SDARS) Module Removal and Replacement.
- Operate the audio system in satellite audio mode.
- Does the system operate correctly?
Yes
The system is operating correctly at this time. The concern was caused by an inoperative SDARS module.
No
GO to F7.
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F7 CHECK FOR CORRECT ACM OPERATION
- Disconnect all the ACM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the ACM connectors and make sure they seat correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes
INSTALL a new ACM. REFER to Audio Control Module (ACM) Removal and Replacement. 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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