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

Information and Entertainment System

Pinpoint Tests

Pinpoint Test H: 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 converts the signals to analog and sends them to the Audio Control Module (ACM), the Accessory Protocol Interface Module (APIM), or to the Rear Entertainment Module (RETM), depending on vehicle configuration.

A short to ground in the satellite radio antenna typically has no effect on the antenna signal. However, an open in the antenna circuit results in no sound from the satellite radio system. A short to voltage in the antenna circuit can have varying effects on the system.

- 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 H: POOR RECEPTION - SATELLITE AUDIO

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H1 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 H2.

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H2 CHECK FOR A SATELLITE ANTENNA FAULT MESSAGE


- Operate the audio system in satellite audio mode and observe the ACM display.
- Does the ACM display indicate a satellite radio antenna fault?

Yes
GO to H3.

No
For vehicles without a DVD entertainment system, Go To Pinpoint Test I. Pinpoint Test I: The Satellite Audio Is Inoperative/Does Not Operate Correctly - Vehicles Without A DVD Entertainment System

For vehicles with a DVD entertainment system, Go To Pinpoint Test J. Pinpoint Test J: The Satellite Audio Is Inoperative/Does Not Operate Correctly - Vehicles With A DVD Entertainment System

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H3 ISOLATE THE SATELLITE RADIO ANTENNA


- Install a new satellite radio antenna. Refer to Antenna Service and Repair.
- 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 any DTCs present. TEST the system for normal operation.

No
GO to H4.

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H4 ISOLATE THE SATELLITE RADIO ANTENNA CABLE


- Install a new satellite radio antenna cable. Refer to Antenna Cable - Satellite Radio Antenna Cable - 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 cable. CLEAR any DTCs present. TEST the system for normal operation.

No
GO to H5.

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H5 CHECK FOR CORRECT SDARS MODULE OPERATION


- Ignition OFF.
- Disconnect the SDARS module connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the SDARS module connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?

Yes
INSTALL a new SDARS module. REFER to Satellite Digital Audio Receiver System (SDARS) Module Service and Repair.
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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