No audio input-have done system test,diagnostics. all report no problem but still no sound

Which of these systems does your vehicle have ?
Audio System The audio system is enabled when the key is in RUN or ACC. The accessory delay function allows the audio unit to be operated for a preset period of time after the key has been turned to OFF and a front door has not been opened.
The speakers are powered either directly by the audio unit (all except THX®) or by the audio amplifiers (THX®). The subwoofers are powered by their own amplifier (Audiophile) or by the audio amplifiers (THX®).
The following audio systems are available:

• Base
  • AM/FM single compact disc (CD) with MP3 audio unit
  • 4 speakers
• Mid-Level
  • AM/FM single CD with MP3 audio unit
  • 6 speakers
• Premium
  • AM/FM 6-CD changer with MP3 audio unit
  • 6 speakers
• Audiophile
  • AM/FM 6-CD changer with MP3 audio unit
  • 8 speakers (includes subwoofers)
• THX® Sound
  • AM/FM 6-CD changer with MP3 audio unit
  • 12 speakers (includes subwoofers and center front/rear speakers)
  • Digital signal processing (DSP) module
  • 2 amplifiers
• Navigation
  • Navigation audio unit
  • THX® sound system
  • Inspection and Verification
    
    1. Verify the customer concern.
    1. Visually inspect the following for obvious signs of mechanical or electrical damage.
    
    
    Visual Inspection Chart Mechanical Electrical
    • Audio unit
    • Antenna
    • Antenna cable
    • Door trim panel(s)
    • Speaker(s)
    • Noise suppression equipment
    • Smart junction box (SJB) fuse(s):
      • 12 (7.5A) (accessory delay feed)
      • 17 (20A) (subwoofer amplifier) (Audiophile)
      • 18 (20A) (audio unit hot at all times)
      • 22 (7.5A) (audio unit hot in START)
    • Battery junction box (BJB) fuse(s):
      • 20 (20A) (LH audio amplifier) (THX®)
      • 21 (20A) (RH audio amplifier) (THX®)
    • Circuitry
    • Digital signal processing (DSP) module (THX®)
    • Subwoofer amplifier (Audiophile)
    • Audio amplifier(s) (THX®)
    • Audio unit
    
    
    1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
       • check that the program card is correctly installed.
       • check the connections to the vehicle.
       • check the ignition switch position.
    1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
    1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
       • CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
       • No response/not equipped for the audio unit, Go To Pinpoint Test A .
       • NOTE: Do not press any buttons on the audio unit while the audio unit is carrying out the self-test.
         System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the audio unit.
    1. If the DTCs retrieved are related to the concern, go to Audio Unit Diagnostic Trouble Code (DTC) Index.
    1. If no DTCs related to the concern are retrieved, and the concern is not visually evident, proceed to the Speaker Walk-Around Test and the Audio Unit Self-Diagnostic Mode.

A normal function of many modern "thinking" cars.
If you need it to remain unlocked you could leave a window open or leave a door on the first catch or leave the spare key in the ignition...

Are these the lights you are talking about ?
Instrument Cluster and Panel Illumination The instrument cluster and panel illumination is used to provide backlighting to the instrument panel, switches, and control components when the headlamp switch is in either the PARKING LAMPS ON or HEADLAMPS ON position. The level of intensity is adjustable by rotating the instrument panel dimmer switch either up to increase intensity or down to decrease intensity.
Fixed Backlighting When the accessory delay relay is energized, switched voltage is supplied to the non-dimmable components and switches.
Dimmable Backlighting When the parking lamps or the headlamps are in the ON position the smart junction box (SJB) monitors the input from the instrument panel dimmer switch. The SJB sends a pulse-width modulated (PWM) voltage to the dimmable components and switches based on input received from the instrument panel dimmer switch. The SJB also sends a message over the controller area network (CAN) to the audio unit, and the instrument cluster to indicate the backlighting intensity level.
If you don't know about PWM an smart junction box your better off taking your vehicle to a quailified repair shop ! You don't the diagnostic tools or technical information . May have DTC'S - diagnostic trouble codes stored in the SJB (computer ). Do you know where SJB is located ?
Visual Inspection Chart Electrical

• Smart junction box (SJB) fuse 23 (15A)
• Bulb(s)
• Circuitry
• Connectors
• Illumination source(s)
• Auxiliary climate control switches (if equipped)
• Door lock control switches
• Window control switches
• Headlamp switch
• Dual electronic automatic temperature control (DEATC) module
• Audio unit
• SJB
• Instrument cluster

1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:

• check that the program card is correctly installed.
• check the connections to the vehicle.
• check the ignition switch position.

1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.

1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:

• CAN circuits fault; all electronic control units no response/not equipped, refer to Section 418-00 .
• No response/not equipped for SJB, refer to Section 419-10 .
• System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the SJB.

1. If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index.

1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
2. • The control illumination is inoperative
   • Fuse
   • Smart junction box (SJB)
   • Go To Pinpoint Test A .
   • The instrument cluster illumination is inoperative
   • Instrument cluster
   • CHECK the audio unit illumination for correct operation.
     • If the audio unit illumination operates correctly, INSTALL a new instrument cluster. REFER to Section 413-01 . TEST the system for normal operation.
     • If the audio unit illumination does not operate correctly, REFER to Section 418-00 to continue diagnosis of the communications network.
   • The audio unit illumination is inoperative
   • Audio unit
   • CHECK the instrument cluster illumination for correct operation.
     • If the instrument cluster illumination operates correctly, REMOVE the audio unit. REFER to Section 415-01 . SEND it to an authorized repair facility. TEST the system for normal operation after the repair.
     • If the instrument cluster illumination does not operate correctly, REFER to Section 418-00 to continue diagnosis of the communications network.

Inspection and Verification

1. Verify the customer concern.

1. Visually inspect the following for obvious signs of mechanical or electrical damage.

Visual Inspection Chart Mechanical Electrical

• Audio unit
• Antenna
• Antenna cable
• Door trim panel(s)
• Speaker(s)
• Noise suppression equipment

• Smart junction box (SJB) fuse(s):
  • 12 (7.5A) (accessory delay feed)
  • 17 (20A) (subwoofer amplifier) (Audiophile)
  • 18 (20A) (audio unit hot at all times)
  • 22 (7.5A) (audio unit hot in START)
• Battery junction box (BJB) fuse(s):
  • 20 (20A) (LH audio amplifier) (THX®)
  • 21 (20A) (RH audio amplifier) (THX®)
• Circuitry
• Digital signal processing (DSP) module (THX®)
• Subwoofer amplifier (Audiophile)
• Audio amplifier(s) (THX®)
• Audio unit

1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
   • check that the program card is correctly installed.
   • check the connections to the vehicle.
   • check the ignition switch position.

1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.

1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
   • CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
   • No response/not equipped for the audio unit, Go To Pinpoint Test A .
   • NOTE: Do not press any buttons on the audio unit while the audio unit is carrying out the self-test. System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the audio unit.

1. If the DTCs retrieved are related to the concern, go to Audio Unit Diagnostic Trouble Code (DTC) Index.

1. If no DTCs related to the concern are retrieved, and the concern is not visually evident, proceed to the Speaker Walk-Around Test and the Audio Unit Self-Diagnostic Mode.

Audio Unit Self-Diagnostic Mode
NOTE: To enter the audio unit self-diagnostic mode, the audio unit must be turned on and in radio tuner mode (AM/FM).

1. To enter the following tests, press the desired preset button while in the speaker walk-around test or while in the audio unit self-diagnostic mode.

1. To exit the audio unit self-diagnostic mode, turn the key OFF or the audio unit off.

1. If the concern remains and the fault is not detected, GO to Symptom Chart to continue diagnostics.

1. The self-diagnostic mode has the following functions available:
   • Preset button 1 = On-Demand Self-Test. This button runs the on-demand self-test.
     • Pressing the MENU DOWN button allows scrolling of any DTCs found during the test while in this menu.
   • Preset button 2 = Display Continuous DTCs. This button enables viewing of any continuous DTCs that have been logged.
     • Pressing the MENU UP button allows scrolling of any DTCs while in this menu.
     • While continuous DTCs are being displayed, pressing the EJECT button will clear all present DTCs.
   • Preset button 3 = Signal Strength Test. This button displays the signal strength.
   • Preset button 4 = Software Version Display. This button displays the audio unit software version.
     • Pressing the MENU UP button allows scrolling of all audio subsystem software versions while in this menu.
   • Preset button 5 = Display Test. This test illuminates all the display segments for 5 seconds, then turns all segments off.
   • Preset button 6 = Configuration Status. This button enables audio unit configuration status.
     • Pressing the MENU button displays the ACM part number while in this menu.

1. To exit the self-diagnostic mode, turn the audio unit off or turn the key OFF.

1. If the concern remains and the fault is not detected, GO to Symptom Chart to continue diagnostics.

Which three fuse's did you replace ? You should check for B+ voltage on both side's of the fuse . Two little metal tabs on top of the fuse. Voltage on both , fuse is good .
Try radio self-diagnostic mode .
A fluctuating AC voltage audio signal is sent to the speakers directly from the audio unit to reproduce sound. The audio unit has a self-diagnostic mode that can be entered by pressing preset buttons 3 and 6 simultaneously.
Visual Inspection Chart Mechanical Electrical

• Audio unit
• Antenna or antenna cable
• Speaker mounting/speaker cones
• Radio ignition interference capacitor, radio frequency interference suppression bond, or radio receiver hood bonding strap

• Smart junction box (SJB) fuse(s):
  • 7 (10A)
  • 12 (5A)
  • 16 (15A)
• Battery junction box (BJB) fuse(s):
  • 7 (40A)
  • 15 (20A) (Hybrid)
  • 16 (25A)
  • 21 (40A)
  • 22 (40A) (Hybrid)
  • 23 (40A) (Hybrid)
• Subwoofer amplifier
• Circuitry
• Audio unit

1. If the concern is visually evident, GO to Symptom Chart .

1. If the concern is not visually evident, proceed to the Speaker Walk-Around Test and the Audio Unit Self-Diagnostic Mode.

Speaker Walk-Around Test (Except Premium CD6)
NOTE: To enter the speaker walk-around test or audio unit self-diagnostic mode, the audio unit must be turned on and in the radio tuner mode (AM/FM).

1. To enter the speaker walk-around test, simultaneously press the audio unit preset buttons 3 and 6.

1. The speaker walk-around test stops at each speaker and applies sound to each speaker for about 1-2 seconds. Each speaker is tested and displayed on the audio unit in the following sequence: RF, LF, LR, RR and SUBWOOFER.

1. To exit the speaker walk-around test, turn the ignition switch off, turn the audio unit off, or press preset button 1 for diagnostics (DIA).

Audio Unit Self-Diagnostic Mode (Except Premium CD6)
NOTE: To enter the speaker walk-around test or audio unit self-diagnostic mode, the audio unit must be turned on and in radio tuner mode (AM/FM).

1. To enter the following tests, press the desired preset button while in the speaker walk-around test or while in the audio unit self-diagnostic mode.

1. To exit the audio unit self-diagnostic mode, turn the ignition switch or the audio unit off.

1. If the concern remains and the fault is not detected, GO to Symptom Chart to continue diagnostics.

1. The self-diagnostic mode has 6 manual tests available:
   • Preset button 1 = ENTER DIAGNOSTICS. This test enters diagnostics from the speaker walk-around test. Metrics are available with SEL and ON buttons indicating time played in AM/FM, media, number of buttons pressed, etc.
   • Preset button 2 = EEPROM BLOCK STATUS. This test shows the validity of memory to calibrate the clock, and seek sensitivity.
   • Preset button 3 = EXIT DIAGNOSTICS.
   • Preset button 4 = Software configuration level. This test queries each radio system controller for its software configuration level.
   • Preset button 5 = DISPLAY TEST. This test lights all the display segments for five seconds and then turns all segments off.
   • Preset button 6 = RAM CONTENTS READOUT. To enter these tests, press preset button 1 while in the speaker walk-around test, then the desired preset button.

1. To exit the self-diagnostic mode, turn the audio unit or the ignition switch off.

1. If the concern remains and the fault is not detected, GO to Symptom Chart to continue diagnostics.

Restart the computer and tap the f12 key as soon as it starts to boot up .
2. Select 'Diagnostic' from the boot menu. The computer will run its pre-boot assessment tests (PSA) before Dell Diagnostics starts. During the PSA you will hear some tones through the system speaker (but not through the headphone jack) but this does not adequately test the audio hardware. Dell Diagnostics plays an instrumental piece of music complete with drums, so if you only hear some tones then you have only run the PSA.
3. Dell Diagnostics should open after the PSA tests, or you should see an option to open it. If you have ever reformatted your entire hard drive then Dell Diagnostics will no longer be there as an option. In that case run it from the Drivers and Utilities (Resource) CD if you have one.
4. Select 'Custom', then the audio tests. (At this point - after you have opened Dell Diagnostic custom - if you can't find the option to select the audio tests that is a symptom of a failed audio chip.)
5. The tests will run. Alternate between using headphones and listening to speakers in case only one signal path is working.
The tests will play some audio and ask you whether you heard it.
6. If you don't hear the music during the test it definitely means there is a hardware failure somewhere in the system. In this case Dell will repair the computer if it is still under warranty.
7.If you do hear the audio during the test but not when you boot back into Windows, that almost always means the hardware is okay but there is a problem with the audio driver or with Windows.
8. Error codes: If you answer 'no' to any question that the test asks you, the test generates an error code that can tell a Dell technician that you answered 'no' to that question. The test does not know the exact component that has gone bad. Before answering 'no' to a question, make note of the circumstances at that point so you will know in general what the error code means.

configure ur PC (both OS audio and third party sound driver) for surround sounds. control panel- sounds and audio devices - speaker settings - advanced - speker settings. so this done. make sure u select the 6 input channel - the button is on the right edge near the volume knob. near the vol button there are two buttons for selecting input type with up down arrow. from that u can select the input type this will be indicated on the top front indicator. but with the 6 input channel selected all selections are preceeded. if u select stereo mode u will have left/ right audio only.
make sure u connect the input right. connect from computer to 6 channel input. main, surround, center and sub-woofer.  connect the spekers to main (L/R), rear(surround) (L/R), center and sub woofer to terminal marked sub woofer ouput. this done select like i said before the 6 channel button. that should do it.

That message indicates that you did not input during the diagnostic that you could see the test. If the system is running normally, then the error can be ignored.

1. remove all external peripherals.
2. use the internal speakers
3. uninstall / reinstall the audio drivers
4. reboot system
5. if still hearing the crackling sound check if cracking sound can be heard only inside windows of even in the bios.
6. check bios hdd if in acoustic mode performance if yes then set it to normal.

2003
was a new model design. I have 2002 info.

you have about 4 doors that pivot and control air flow direction either by vacuum motors or electric motors. If system fails, the default is out of the defrost ducts to keep the windshield clear.

Try this test for 2002 system.

Front Panel DATC Module Self-Test (On-demand Diagnostic Trouble Codes—DTCs)
On-demand DTCs are those that are reported by an ECU when a failure is detected while executing a diagnostic test. For the DATC module this means that all faults (hard) that occur while the module is conducting a self-test shall be reported as an on-demand DTC.

• The DATC module self-test will not detect concerns associated with data link messages such as engine coolant temperature or vehicle speed signals. The scan tool must be used to retrieve these concerns.
• The vehicle interior temperature should be between 0-32°C (32-90°F) when carrying out the self-test. If the temperatures are not within the specified ranges, false temperature sensor DTCs may be displayed.

The DATC module self-test through the front panel display:

• can be initiated at any time. Normal operation of the system stops when the self-test is activated.
• is entered by pressing the OFF and FLOOR buttons simultaneously and then pressing the AUTO button within two seconds. The display will show counts of 1 to 25 in the center of the display window. Record all DTCs displayed.
• concludes by reporting all on-demand DTCs. Follow the diagnostics procedure given under ACTION in the DTC index for each DTC given.
• reports individual on-demand DTCs as four-digit DTCs (less the alpha character).
• will calibrate all the mode doors and check all analog inputs. The DATC module will only report on-demand (hard) faults that occurred while the DATC module was conducting its self-test.
• will light all control panel display segments if no faults are detected.
• will report individual on-demand DTCs without the °C symbol lit.

To exit the self-test, press any button. This will clear all on-demand codes from the DATC module memory. If no button is pushed DTCs will continue to be displayed.
Upon exit from the self-test the DATC module returns to operational status. The DATC module executes a hard (cold boot) reset which places the DATC system in the OFF mode.
If a condition exists but no DTCs appear during the self-test, GO to Symptom Chart Condition: The DATC System Is Inoperative, Intermittent or Incorrect Operation.
Always exit the self-test before powering the system down (system turned OFF).


PS. Where is air coming out in heat or cooling modes?