Pinpoint Test I: The Satellite Audio Is Inoperative/Does Not Operate Correctly - Vehicles Without A DVD Entertainment System
Information and Entertainment System
Pinpoint Tests
Pinpoint Test I: The Satellite Audio Is Inoperative/Does Not Operate Correctly - Vehicles Without A DVD Entertainment System
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 SBP03 (BU/RD), and ground through circuit GD103 (BK/BU). Digital signals are received by the satellite radio antenna and sent to the SDARS module, which converts the signals to analog and sends them to either the Audio Control Module (ACM) or to the Accessory Protocol Interface Module (APIM) (if equipped).
If there is an open in the satellite antenna circuit, there will be no satellite audio. The ACM display indicates a satellite antenna concern (the method varies according to the type of ACM) when the audio system is operated in satellite radio mode. To diagnose an open in the satellite antenna circuit, Go To Pinpoint Test H. Pinpoint Test H: Poor Reception/No Sound - Satellite Audio
The SDARS module transmits left and right channel audio signals. When there is a fault in any of the audio signal circuits, the audio quality is reduced. If the circuits for a specific channel are shorted together, loss of audio on the entire channel occurs. This can be detected by using the SDARS module tones test.
- DTC U0184 (Lost Communication With Radio [ACM]) - set by the SDARS module when certain Medium Speed Controller Area Network (MS-CAN) messages are missing 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]) - set by the ACM when certain MS-CAN messages are missing from the SDARS module for greater than 5 seconds. This results in loss of satellite radio functionality.
- DTC U0197 (Lost Communication With Telephone Control Module) - set by the SDARS module when certain MS-CAN messages are missing from the APIM for greater than 5 seconds.
This pinpoint test is intended to diagnose the following:
- Subscription status
- Wiring, terminals or connectors
- SDARS module
- APIM (if equipped)
- ACM
PINPOINT TEST I: THE SATELLITE AUDIO IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - VEHICLES WITHOUT A DVD ENTERTAINMENT SYSTEM
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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I1 VERIFY AN ACTIVE SUBSCRIPTION
- Enter satellite radio mode on the ACM 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
If the display indicates a satellite antenna fault, Go To Pinpoint Test H. Pinpoint Test H: Poor Reception/No Sound - Satellite Audio
Otherwise, GO to I2.
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I2 CHECK FOR NON-NETWORK DTCs
- Carry out the SDARS module self-test using the scan tool.
- Are any non-network DTCs present?
Yes
For DTC B1031 or DTC B1032, Go To Pinpoint Test H. Pinpoint Test H: Poor Reception/No Sound - Satellite Audio
For all other DTCs, REFER to DTC Charts. [1][2]Diagnostic Trouble Code Descriptions
No
GO to I3.
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I3 CHECK FOR COMMUNICATION WITH THE ACM AND APIM
- Carry out the network test using the scan tool.
- Does the scan tool communicate with the ACM and the APIM (if equipped)?
Yes
GO to I4.
No
REFER to Information Bus to diagnose no communication with the ACM or APIM.
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I4 CHECK FOR LOST COMMUNICATION DTCs
- Ignition ON.
- Using the scan tool, clear any ACM and SDARS module continuous DTCs.
- Ignition OFF.
- Ignition ON.
- Wait at least 10 seconds.
- Retrieve the ACM and SDARS module continuous DTCs.
- Is DTC U0184 (SDARS module), U0193 (ACM), or U0197 (SDARS module, if equipped with the SYNC system) present?
Yes
For DTC U0184, GO to I13.
For DTC U0193, GO to I11.
For DTC U0197, GO to I12.
No
GO to I5.
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I5 CHECK THE SATELLITE AUDIO OUTPUT
- Enter the following diagnostic mode on the scan tool: Tones Test.
- Carry out the SDARS module tones test using the scan tool.
- Are alternating LH/RH tones audible?
Yes
GO to I11.
No
If the vehicle is equipped with the SYNC system, GO to I6.
Otherwise, GO to I9.
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I6 CHECK THE OPERATION OF THE SYNC SYSTEM AUDIO
- Operate the audio system in radio tuner (AM/FM) mode.
- Connect: Multi-Media Interface Tester.
- Using the Multi-Media Interface Tester, attempt to play an audio file using the audio input jack.
- Does the SYNC system audio operate correctly?
Yes
GO to I7.
No
Go To Pinpoint Test U. Pinpoint Test U: Poor Quality/Distorted/No Sound While In SYNC Mode
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I7 CHECK THE AUDIO CIRCUITS TO THE APIM FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: APIM C3342.
- 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 I8.
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I8 CHECK THE AUDIO CIRCUITS TO THE APIM FOR AN OPEN OR SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between the APIM, harness side and the SDARS module, harness side; and between the APIM, harness side and ground as follows:
- Is the resistance less than 5 ohms between the APIM and the SDARS module, and greater than 10,000 ohms between the APIM and ground?
Yes
GO to I11.
No
REPAIR the circuit in question. TEST the system for normal operation.
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I9 CHECK THE AUDIO CIRCUITS TO THE ACM FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: ACM C240c.
- 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 I10.
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I10 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 I11.
No
REPAIR the circuit in question. TEST the system for normal operation.
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I11 ISOLATE THE SDARS MODULE
- Ignition OFF.
- Connect: ACM C240c.
- Connect: APIM C3342 (If Equipped).
- Install a new SDARS module. Refer to Satellite Digital Audio Receiver System (SDARS) Module Service and Repair.
- Operate the audio system in satellite radio mode.
- Does the system operate correctly?
Yes
The concern was caused by an inoperative SDARS module. The system is operating correctly at this time.
No
If equipped with the SYNC system, GO to I12.
Otherwise, GO to I13.
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I12 CHECK FOR CORRECT APIM OPERATION
- Connect: All Disconnected Connectors.
- 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. If the concern is still present, GO to I13.
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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I13 CHECK FOR CORRECT ACM OPERATION
- Ignition OFF.
- 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) Audio Control Module (ACM). 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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