Diagnostic Starting Point - Entertainment
Begin the system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check - Vehicle will provide the following information
- The identification of the control modules which command the system
- The ability of the control modules to communicate through the serial data circuit
- The identification of any stored DTCs and their status
The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.
Scan Tool Output Controls
| Scan Tool Output Control | Additional Menu Selections | Description |
|---|---|---|
| Rear Subwoofer | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Center IP | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Rear Door | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Rear Door | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Front IP and Left Front Door | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Front IP and Right Front Door | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker OFF will turn off all speakers. |
UX8 Input/Output Test
| Scan Tool Output Control | Additional Menu Selections | Description |
|---|---|---|
| Rear Subwoofer Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Front IP Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Front IP Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Front Door Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Front Door Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Center IP Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Rear Door Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Rear Door Speaker | Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. |
UX8 Test Tone Test
| Scan Tool Output Control | Additional Menu Selections | Description |
|---|---|---|
| Left Front Door Subwoofer Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Front Door Subwoofer Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Rear Subwoofer Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Front IP Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Front IP Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Center IP Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Rear Door Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Rear Door Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Seat Left Speakers | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Seat Right Speakers | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Left Rear Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Right Rear Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. | |
| Rear Console Speaker | Commanding the speaker ON will turn off all speakers except this speaker. Commanding the speaker ON will produce a tone heard from this speaker. Commanding the speaker OFF will turn off all speakers. |
UY5 Audio Input/Output and Test Tone Tests
Scan Tool Data List
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine OFF/Radio ON | |||
| 8-Digit GM Part Number | Data Display | Numeric | Varies |
| Band Number | Data Display | AM/FM1/FM2 | FM1 |
| CD Changer | Data Display | Present/Not Present | Not Present |
| Channel Number | Data Display | Alphanumeric | Varies |
| Personalization | Data Display | Driver 1/Driver 2/Unknown | Driver 1 |
| Power Mode Config. | Data Display | Alphanumeric | Seville |
| Signal Strength | Data Display | Numeric | 19 |
| Source Selected | Data Display | Alphanumeric | Tuner |
| Theft Armed | Data Display | No VIN/ Learned | Learned |
| Theft Lock | Data Display | Locked/Unlocked | Unlocked |
| Total CD/DVD Hours | Data Display | Hours | Varies |
| Total CDX Hours | Data Display | Hours | Varies |
| Total Radio Hours | Data Display | Hours | Varies |
Radio/Integrated Radio Control (IRC) Data List
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine OFF/Radio ON | |||
| 8-Digit GM Part Number | ID Information/Module Information | Numeric | Varies |
| Battery Voltage | Data | Volts | Varies |
| Component Serial Number | ID Information/Module Information | Numeric | Varies |
| Digital Radio Antenna | Data | Millivolts or Milliamps | Varies |
| Ignition Counter | Data | Numeric | Varies |
| Power Mode | Data | Alphanumeric | Run |
| Radio ID | ID Information/Module Information | Numeric | Varies |
Digital Radio Receiver Data List
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine OFF/Radio ON | |||
| Battery Voltage | Data | Volts | Varies |
Amplifier Data List
Circuit Description
This DTC is generated by the module when an error occurs between the VIN as received over the Low Speed GMLAN circuit and the VIN as stored in the module memory. The only circuit required is the Low Speed GMLAN circuit.
DTC Descriptor
This diagnostic procedure supports the following DTC
DTC B1001 Option Configuration Error
This Vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms refer to DTC Symptom Description in Vehicle DTC Information
| DTC Symptom | DTC Descriptor |
|---|---|
| 00 | Out of range condition |
DTC B1001
Conditions for Running the DTC
The DTC is run when the module changes from OFF to ON. This may be in response to the radio switch or the ignition ON signal.
Conditions for Setting the DTC
This DTC is generated by the module when an error occurs between the VIN as received over the Low Speed GMLAN circuit and the VIN as stored in the module memory. This happens when the radio changes from OFF to ON.
Action Taken When the DTC Sets
The module does not function. The radio may also displays as many characters of the word CALIBRATE as will fit in the radio display.
Conditions for Clearing the DTC
Re-calibration with the correct calibrations for the vehicle and cycling the module to OFF then to ON will clear the DTC if there is no damage to the module.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Radio/Audio System Schematics Connector End View Reference: Entertainment Connector End Views | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, configure the module to the vehicle. Does the DTC reset? | Go to Step 3 | Go to Step 4 |
| 3 | Replace the module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 4 | |
| 4 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified by the supporting text. Does the DTC reset? | Go to Step 2 | System OK |
DTC B1001
The digital radio antenna is connected to the digital radio receiver (DRR) by 1 coax cable. This coax carries the satellite and the terrestrial signal. The antenna cable for the satellite antenna also provides a path for D.C. current for powering the antenna.
This diagnostic procedure supports the following DTC
DTC B1259 Antenna Ground Circuit
This vehicle has DTCs which include DTC symptoms. For more information on DTC Symptoms refer to DTC Symptom Description in Vehicle DTC Information.
| DTC Symptom | DTC Symptom Descriptor |
|---|---|
| 04 | Open |
DTC B1259
This test is run every 300 milliseconds.
The DRR detects an antenna fault.
The radio displays No XM Signal.
- The condition must be corrected.
- The DTC clears after 100 malfunction free ignition cycles.
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Radio/Audio System Schematics Connector End View Reference: Entertainment Connector End Views | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | With a scan tool, observe the digital radio antenna in the digital radio receiver (DRR) data list. Does the scan tool indicate that the digital radio antenna is within the specified range? | 17-63 mA | Go to Step 3 | Go to Step 4 |
| 3 | Test the antenna cable for a short to ground. Refer to Circuit Testing in Wiring Systems. Did you find the condition? | Go to Step 6 | Go to Step 7 | |
| 4 | Disconnect the antenna cable from the DRR. Measure the voltage from the center conductor of the inboard antenna connector on the DRR to one of the case screws. Does the voltage measure within the specified range? | 4.5-5.5 V | Go to Step 5 | Go to Step 7 |
| 5 | Test the antenna cable for an open or a high resistance. Refer to Circuit Testing in Wiring Systems. Did you find the condition? | Go to Step 6 | Go to Step 9 | |
| 6 | Replace the antenna cable. Refer to Coaxial Cable Replacement - Global Positioning System (GPS) in Cellular Communication. Did you complete the replacement? | Go to Step 11 | ||
| 7 | Inspect for poor connections at the DRR. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 8 | |
| 8 | Replace the DRR. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 11 | ||
| 9 | Inspect for poor connections at the antenna. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 10 | |
| 10 | Replace the antenna. Refer to Antenna Replacement - Cellular Communications/Digital Radio in Cellular Communication. Did you complete the replacement? | Go to Step 11 | ||
| 11 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset? | Go to Step 2 | System OK | |
DTC B1259
Symptoms - Entertainment
| IMPORTANT | The following steps must be completed before using the symptom tables. |
- Perform the «Diagnostic System Check - Vehicle»(ref-197532-S30271296932005101200000) in Vehicle DTC Information before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. The control modules can communicate via the serial data link.
- Review the system operation in order to familiarize yourself with the system functions. Refer to «Radio/Audio System Description and Operation»(ref-197539-S01781598412005101200000) .
Visual/Physical Inspection
- Inspect for aftermarket devices which could affect the operation of the radio. Refer to «Checking Aftermarket Accessories»(ref-197533-S03944243902005101200000) in Wiring Systems.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom
- «Audio System Troubleshooting Hints»(ref-197539-S30614813842005101200000)
- «Radio Poor Reception»(ref-197539-S32014203002005101200000)
- «Digital Radio Poor or No Reception»(ref-197539-S16938798402005101200000)
- «Noise Compensated Volume Inoperative»(ref-197539-S33209139442005101200000)
- «Steering Wheel Controls Inoperative»(ref-197539-S12953729862005101200000)
- «Reduced Volume - One or More Speakers»(ref-197539-S30220644872005101200000)
- «Speakers Inoperative - One or More»(ref-197539-S33531283322005101200000)
- «Speakers Inoperative - All»(ref-197539-S19972599932005101200000)
For navigation related symptoms, refer to Symptoms - Navigation Systems in Navigation Systems.
Audio System Troubleshooting Hints
Many conditions that affect radio operation may be corrected without removing the radio from the car. Verify the condition, and follow the diagnostic procedures in order to isolate and correct the condition. In order to properly diagnose any audio system problems, ensure that you have a fully charged battery.
Preliminary Inspections
- Check for any aftermarket equipment that may have been installed on the vehicle. If aftermarket equipment is found disconnect it and check if the audio noise is still present. Inspect that the antenna connector and the antenna coaxial cable are clean and tight.
- For reception concerns, first determine if the customer is within the listening area of the stations they are attempting to receive.
- Stations at the lower end of the FM band are more susceptible to audio noises than stations at the higher end.
- If the noise is only from one speaker check for the following before speaker replacement: Isolate the noise using the J 39916-A CD and Cassette Diagnostic Audio Kit. See «Special Tools»(ref-197539-S16499858282005101200000) . Inspect the speaker connections to ensure they are clean and tight. Refer to «Testing for Intermittent Conditions and Poor Connections»(ref-197533-S35858719362005101200000) in Wiring Systems. Inspect for a loose or incorrectly installed speaker or surrounding trim. Loose trim can cause a buzz or flutter which sounds like a malfunctioning speaker.
- Ignition noise on the FM band may be an indication of an ignition system problem.
- Inspect that all vehicle grounds are clean, tight and free of corrosion.
- Inspect the rear defogger grid lines for large breaks or dark spots.
- Inspect the connections at the radio antenna module to ensure that they are clean and tight.
- Compare the customers vehicle to another of similar model and audio system to determine if the condition is abnormal.
Diagnostic System Check - Vehicle
Always perform the Diagnostic System Check - Vehicle, before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.
Always perform the Diagnostic System Check - Vehicle before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.
Always perform the Diagnostic System Check - Vehicle before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.
Always perform the Diagnostic System Check - Vehicle before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.
Always perform the Diagnostic System Check - Vehicle before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.