Pinpoint Test R: Poor Reception/Poor Sound Quality/No Sound - Satellite Radio
Information and Entertainment System
Pinpoint Test R: Poor Reception/Poor Sound Quality/No Sound - Satellite Radio
Normal Operation
Digital signals are received by the satellite radio antenna and sent to the Audio Control Module (ACM) through the satellite radio antenna cable. The satellite receiver is internal to the ACM.
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.
Obstructions to the antenna line of sight can affect reception, but this is considered normal operation. Possible obstructions include hills, tall buildings, tunnels, and being parked inside a garage. Be sure the vehicle is in a clear area, free of obstructions, before testing satellite radio reception.
- DTC B1A89:01 (Satellite Antenna: General Electrical Failure) - sets when a short to voltage or short to ground is detected in the satellite radio antenna circuit.
- DTC B1A89:13 (Satellite Antenna: Circuit Open) - sets when an open is detected in the satellite antenna circuit.
This pinpoint test is intended to diagnose the following:
- Obstructions to the antenna line of sight
- No channel found in the selected category
- Satellite antenna cable
- Satellite antenna
- ACM
PINPOINT TEST R: POOR RECEPTION/POOR SOUND QUALITY/NO SOUND - SATELLITE RADIO
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R1 CHECK THE RECEPTION AND CATEGORY FILTER SETTING
- Turn the category filter function off. For additional information, refer to the Owner's Literature.
- Drive the vehicle to an open location, free of obstacles.
- Scan for a good channel.
- Does the satellite radio system find a good channel with normal reception?
Yes
The system is operating correctly at this time. The concern was a result of no channel being found in the selected category or obstructions to the antenna line of sight.
No
GO to R2.
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R2 CHECK THE SATELLITE SIGNAL PID (SAT_SIG_STR)
- Enter the following diagnostic mode on the scan tool: ACM DataLogger.
- Monitor the ACM PID (SAT_SIG_STR).
- Does the PID indicate "No Signal"?
Yes
GO to R3.
No
GO to Pinpoint Test Q. Pinpoint Test Q: The Satellite Audio Is Inoperative/Does Not Operate Correctly
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R3 CHECK THE SATELLITE RADIO ANTENNA CABLE RESISTANCE
- Ignition OFF.
- Disconnect: Satellite Radio Antenna At ACM.
- Disconnect: Satellite Radio Antenna At Satellite Radio Antenna.
- Measure the resistance of the satellite radio antenna core between the ACM and the satellite radio antenna.
- Measure the resistance of the satellite radio antenna between the core and the shield of the antenna cable.
- Is the resistance less than 1 ohms between the ACM and the satellite radio antenna, and greater than 10,000 ohms between the satellite radio antenna core and shield?
Yes
GO to R4.
No
INSTALL a new satellite radio antenna cable. REFER to Antenna Cable - Satellite Radio Service and Repair. CLEAR any DTCs present. TEST the system for normal operation.
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R4 ISOLATE THE SATELLITE RADIO ANTENNA
- Install a new satellite radio antenna. Refer to Antenna - Satellite Radio Service and Repair.
- Operate the audio system in satellite radio mode.
- Is the reception OK?
Yes
The concern was caused by an inoperative satellite radio antenna. The system is operating correctly at this time. CLEAR any DTCs present.
No
GO to R5.
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R5 CHECK FOR CORRECT ACM OPERATION
- Ignition OFF.
- Disconnect all the ACM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect 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. CLEAR any DTCs present.
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