Pinpoint Test G: Poor Reception/No Sound - Satellite Audio

Information and Entertainment System

Pinpoint Tests

Pinpoint Test G: Poor Reception/No Sound - Satellite Audio

Normal Operation

Digital signals are received by the satellite antenna and sent to the Satellite Digital Audio Receiver System (SDARS) module, which then converts the signals to analog and provides the audio signals to the Audio Control Module (ACM).

- DTC B1031 (SDARS Satellite Antenna Open) - sets when an open or high resistance is detected in the satellite antenna circuit. This DTC can be either continuous or on-demand.
- DTC B1032 (SDARS Satellite Antenna Short) - sets when a short to ground is detected in the satellite antenna circuit. This DTC can be either continuous or on-demand.

This pinpoint test is intended to diagnose the following:
- Obstructions to the line of sight
- Satellite radio antenna cable
- Satellite radio antenna
- SDARS module



PINPOINT TEST G: POOR RECEPTION/NO SOUND - SATELLITE AUDIO

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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G1 REVIEW THE DTCs


- Review the DTCs from the SDARS module self-test.
- Is DTC B1031 or B1032 present?

Yes
GO to G3.

No
GO to G2.

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G2 CHECK THE OPERATION OF THE SATELLITE AUDIO


- Drive the vehicle to an open location, free of obstacles.
- Operate the audio system in satellite audio mode.
- Is the reception OK?

Yes
The system is OK at this time. ADVISE the customer that the satellite signal can be affected by obstructions to the satellite antenna line of sight.

No
GO to G3.

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G3 CHECK THE SATELLITE ANTENNA CABLE


- Ignition OFF.
- Disconnect: Satellite Antenna Connection (at SDARS Module).
- Disconnect: Satellite Antenna Connection (at Satellite Antenna).
- Measure the resistance of the satellite radio antenna cable between the SDARS module and the satellite antenna connection.
- Is the resistance less than 1 ohm?

Yes
GO to G4.

No
INSTALL a new satellite radio antenna cable. CLEAR the DTCs. REPEAT the self-test.

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G4 ISOLATE THE SATELLITE ANTENNA


- Install a new satellite antenna. Refer to Antenna - Satellite Radio Antenna - Satellite Radio.
- Operate the audio system in satellite audio mode.
- Is the reception OK?

Yes
The system is operating correctly at this time. The concern was caused by an inoperative satellite radio antenna. CLEAR the DTCs. REPEAT the self-test.

No
INSTALL a new SDARS module. REFER to Satellite Digital Audio Receiver System (SDARS) Module Removal and Replacement.
TEST the system for normal operation.

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