Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
4. Uses the scan tool to determine if there are any codes in the Radio module.
5. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
6. The presence of DTCs that begin with the letter "B" indicates an issue with a module that communicates with BCM.
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The numbers below refer to the step numbers on the diagnostic table.
2. This step verifies that the DTC is still present.
3. This step isolates the fault condition.
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The numbers below refer to the step numbers on the diagnostic table.
2. This step helps to determine if the Diversity Antenna System is operating.
3. This step helps to determine if Radio Antenna Module is receiving the proper signal from the radio.
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The number below refers to the step number on the diagnostic table.
3. Due to current limiting capabilities in the module, an antenna cable shorted to ground could still show 1200-1800 mV.
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The number below refer to the step number on the diagnostic table.
2. This step verifies that the steering wheel convenience switch is stuck. The convenience switches operate in the 123-247 count range. The value given is the normal condition that exists when no switch is activated.
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Symptoms-Entertainment
| IMPORTANT | Review the system operation in order to familiarize yourself with the system functions. Refer to Radio/Audio System Description and Operation . |
Radio/Audio System Description and Operation
The Entertainment System on this vehicle is configured with a radio, antenna, and speakers.
The following list shows the radios available for this vehicle
- Radio (UM7)-AM/FM with Cassette
- Radio (UB0)-AM/FM with CD
- Radio (UB1)-AM/FM, Cassette and CD
- Radio (UC6)-AM/FM, Integral Multi Disc CD Changer
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Each item in the list below represents topics covered in detail below.
- AM/FM Reception
- Voice Recorder (Travel Note)
- Audio Amplifier
- Theft Deterrent
- Integral Multi Disc CD Changer (IMDX)
- Remote Playback Device
- Radio Data System (RDS)
- Tape/CD Player Error Messages
- Rear Seat Audio (RSA)
- XM Satellite Radio