Audio System Acura TL IV

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Disconnecting

To disconnect the connector, pull the lever (A) while pushing the lock tab (B) down, then pull the connector (C)

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Connecting

To connect the connector, push the connector into the connector sleeve (A) As the connector is pressed in, the lever (B) moves to the locked position

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Symptom Troubleshooting Index

With navigation

SYMPTOM TROUBLESHOOTING CHART

Without navigation

SYMPTOM TROUBLESHOOTING CHART

Overview

The audio unit acts as the processor for all audio functions Select audio functions from the audio unit buttons or the audio remote switch (on the steering wheel) The center display provides the current audio status

The audio unit has a built-in EEPROM (electrically erasable programmable read-only memory) This memory holds the audio presets (AM/FM radio frequency, sound settings, etc.) even when the battery is disconnected

A security signal is daisy-chained between the audio and vehicle components for integration into the vehicle's security system

There are two audio systems available for the TL

1. The ELS audio system is available on vehicles with navigation It includes surround sound with 10 speakers
2. The premium audio system is on vehicles without navigation It includes 8 speakers

PREMIUM AUDIO SYSTEM REFERENCE CHART

o Available

X Not available

HDD recording

The navigation system uses a HDD (hard disc drive) and can store music To record music to the HDD, you must use an original CD or uncompressed CD-R files The music must be loaded on a CD using the CD player You cannot load music through the USB adapter or auxiliary jack

Telematics Muting Logic

The optional navigation system provides voice control for the audio, the XM, and the CD player Voice control commands are communicated through the GA-Net (audio unit) When using the TALK/BACK buttons or route guidance (RG), the center speaker is muted and you hear the navigation instructions through the front speakers When using the HFL/AcuraLink, the center speaker, the rear speakers, and the subwoofer are muted and the front speakers give the telephone sound When using the HFL/AcuraLink and the RG (Route Guidance) or the TALK/BACK buttons, the rear speakers are muted and you hear the telephone sound and navigation instructions through the front speakers Muting commands are passed on the GA-Net bus For more information, see the NAVIGATION SYSTEM . The outline of the audio interruption function is shown in the following table

AUDIO OUTPUT REFERENCE CHART

Bluetooth Audio

Bluetooth audio allows approved Bluetooth cell phones equipped with music function to play music via a car audio system using Bluetooth technology You can control the phone's music player remotely using the wireless connection

1. You can play music stored in your cell phone using the wireless connection *1
2. You can choose next song, previous song and resume/pause via wireless *2

*1 Call phone must support AVRCP1 0, A2DP1 0 for Bluetooth technology, and also be on the Honda approved HFL list at handsfreelink.com

*2 Not all phones support the bluetooth audio function

Supported Devices

1. Bluetooth music phones that support AVRCP1 0/A2DP1 0
2. Bluetooth adapters for portable music devices including iPod are not supported

Note. Availability of the functions depends on the connected device The latest support information is updated through the website handsfreelink.com

Pairing a cell phone

To pair a cell phone, refer to pairing a cell phone in the HandsFreeLink system (see NAVIGATION THROUGH HFL MENUS ) Once a cell phone is paired, the process does not have to be repeated for the phone

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1. Push the AUX button to select Bluetooth Audio source NOTE: If you push the AUX button when no cell phone is connected, NO CONNECT is displayed If you see NO CONNECT when you are using the cell phone music function, check that the device is properly paired If it is paired, the cell phone may not be compatible See «HANDS FREE LINK SYSTEM»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system) for more information Music titles and artist names are not displayed
2. Start playing the music in the paired cell phone NOTE: Depending on the cell phone, the music may start automatically, or the user may need to select headset as an audio output
3. A user can select the next song or the previous song using the SKIP button
4. A user can select pause and resume by selecting [RESUME/PAUSE] in the AUDIO MENU using the interface dial

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Disc Handing and Cleaning

To avoid damaging or leaving fingerprints on a disc (CD, DVD, DVD-A, etc.), always handle it by the edges and place it in a jewel case whenever it is outside the audio or the audio-navigation unit Deep scratches or fingerprints on the back of the disc can cause loading problems, poor sound quality, skipping, or other errors

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Smudges and fingerprints can be carefully removed using a mild cleaner and tissues designed to clean eyeglasses To clean a disc, use a clean soft cloth Very gently wipe across the disc from the center to the outside edge, never in a circular motion

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Do not place stabilizer rings or labels on the disc

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Note. All items may not apply to this vehicle See the for more information

Audio Glossary

AUDIO GLOSSARY REFERENCE CHART

With Navigation

Note. Refer to the navigation section for audio-navigation unit connector G, H, and J inputs and outputs (see NAVIGATION UNIT CONNECTORS )

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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With navigation

TERMINAL REFERENCE CHART

Without navigation

TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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TERMINAL REFERENCE CHART

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With navigation

TERMINAL REFERENCE CHART

Without navigation

TERMINAL REFERENCE CHART

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How to Obtain the Audio Unit Serial Number

Note. This procedure can only be done after the power has been disconnected and reconnected to the audio unit, and the audio unit displays CODE when the audio unit is turned on

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Make sure the audio system is turned off
3. Push and hold the preset No 1 and No 6 buttons
4. While holding the buttons, push the VOL PUSH PWR knob to ON
5. Release the buttons, and the self-diagnostic begins
6. The display shows an 8 digit serial number
7. Use all 8 numbers as the serial number when using the Interactive Network (iN) to retrieve the 5 digit anti-theft code
8. To end the self-diagnostic function, turn the audio system off, or turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode

The audio system has a self-diagnostic function to help find problems with the audio system To run the self-diagnostic function, do the following

Note. Not all self-diagnostic functions appear on all models There may be other self-diagnostic functions that are for factory use only The self diagnostic function does not find every problem with the audio system Check any official Honda service website for more information about the audio system

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Make sure the audio system is turned off
3. Push and hold the preset No 1 and No 6 buttons
4. While holding the buttons, push the VOL PUSH PWR knob to ON
5. Release the buttons, and the self-diagnostic begins
6. When you are in the self-diagnostic mode, pressing a preset button starts the diagnostic mode that is assigned to that preset button

Note. Any other diagnostic screens shown are for factory use only

No 2 button

Audio button, knob, and audio remote switch detection Allows individual manual selection of all audio panel knobs, buttons, and remote switches to verify if they are functional When properly detected, the selected knob, button, or audio remote switch name and/or value is displayed To exit this mode, go to step 7 Once you exit this test, you must start again at step 1

No 3 button

Entire LCD lighting/light-out mode Turns on/off the entire LCD to show the presence (LCD stuck on) or absence (LCD dead) of an LCD segment

No 4 button

Duty indication mode (for the Illumination dim) Indicates the duty for the Illumination dim when the dash lights are on

No 5 button

Vehicle speed pulse (VSP) indication mode Indicates the vehicle speed pulse

FM button (Push and hold 5 sec)

Reception level indication mode. Indicates the reception level (dB) When entering the reception level check mode, the AM/FM or FM button is used to change the main/sub antenna

Canceling the Self-diagnostic Function

1. To end the self-diagnostic function, turn the audio system off, or turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode

Display Specifications

Note. Any other diagnostic screens shown are for audio manufacturer's use only

Entry LCD lighting/lights-outs mode (press No 3 button)

This diagnostic screen checks for segments that may be dead (off) or stuck on

All the segments in the display must appear If there are dead segments, replace the audio-navigation switch panel (see AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION ), or the audio-HVAC display unit (see AUDIO-HVAC DISPLAY UNIT REMOVAL/INSTALLATION )

When the display segments are all on, press the No 3 button The entire display must turn black If any segments are stuck on, replace the audio-navigation switch panel (see AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION ), or the audio-HVAC display unit (see AUDIO-HVAC DISPLAY UNIT REMOVAL/INSTALLATION )

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Illumination level (for the gauge illumination) indication (press No 4 button)

This diagnostic screen checks the gauge illumination input

With the headlights on, you should see a values between 1 (max low) and 22 (max high)

When you dim and brighten the gauge with the dimmer knob, you should see this value change accordingly If it doesn't, check for B-CAN DTCs

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Vehicle speed pulse indication (press No 5 button)

This diagnostic screen checks that the audio unit is receiving the VSP indication

When you drive the vehicle, the VSP indicates the vehicle speed in km/h

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Reception level indication (Push and hold 5 sec AM/FM button)

This diagnostic screen checks the radio reception level This level then can used in the diagnosis of radio reception quality The reception level is displayed in decibels (dB)

Preparation

1. Park the vehicle outdoors in a location with good radio reception
2. Tune to a powerful local FM radio station, then write down the radio station number
3. Tune to a powerful local AM radio station, then write down the radio station number

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1. Enter the reception level indication mode in the self-diagnostic function The AM/FM antenna amplifier is on and the character (A) is not displayed in the audio-HVAC display
2. Tune to the FM radio station you wrote down in preparation using the TUNE button (with navigation) or selector knob (without navigation), and note the decibel level of that station
3. Press and release the A SEL button to turn the AM/FM antenna amplifier off (A is now displayed in the audio-HVAC display)
4. Note the decibel level of that station
5. Press and release the A SEL button to turn the AM/FM antenna amplifier back on (A is not displayed in the audio-HVAC display)
6. Press and hold the AM/FM button for more than 5 seconds to enter the AM reception mode
7. Tune to the AM radio station you wrote down in preparation using the TUNE button (with navigation) or selector knob (without navigation), and note the decibel level of that station.
8. Press and release the A SEL button to turn the antenna amplifier off (A is now displayed in the audio-HVAC display)
9. Note the decibel level of that station
10. Press and release the A SEL button to turn the AM/FM antenna amplifier back on (A is not displayed in the audio-HVAC display)
11. Turn the ignition switch to LOCK(0), or press the engine start/stop button to select the OFF mode, or audio system off to exit the test mode
12. Compare your results to a known-good vehicle, (make sure it is the same year and trim level) in the same location and direction, and under the same environmental conditions

Speaker check mode

Note. Not all self-diagnostic functions appear on all models There may be other self-diagnostic functions that are for factory use only

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Make sure the audio system is turned off
3. Push and hold the preset No 1 and No 3 buttons
4. While holding the buttons, push the VOL PUSH PWR knob to ON
5. Release the buttons and the speaker check mode begins A tone should sound from one speaker
6. Each time you press the SKIP button, the test moves to the next speaker in the order listed in the table NOTE: Adjust the volume level to a comfortable level Display Specifications (-->) is pressed (1)-->(2)-->(3)-->(4)-->(5)-->(6)-->(7) (<--) is pressed (1)-->(7)-->(6)-->(5)-->(4)-->(3)-->(2) SPEAKER REFERENCE CHART Speaker Displayed Segments Remarks (1) Driver's door speaker and left tweeter SPK FR-L You should hear a tone corresponding to the speaker (2) Front center speaker SPK CNT You should hear a tone corresponding to the speaker (3) Front passenger's door speaker and right tweeter SPK FR-R You should hear a tone corresponding to the speaker (4) Right rear door speaker (1) and right rear speaker SPK RR-R You should hear a tone corresponding to the speaker (5) Subwoofer SPK SUBW You should hear a tone corresponding to the speaker (6) Left rear door speaker (1) and left rear speaker SPK RR-L You should hear a tone corresponding to the speaker (7) All speakers SPK ALL You should hear a tone corresponding to the speaker The subwoofer does not sound a tone (1) With navigation NOTE: Any other diagnostic screens are for factory use only
7. The speaker check mode ends when you turn the audio system off or turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode

XM Self-diagnosis

Note. The diagnostic screen checks the audio unit's XM radio reception level. To check the XM reception, do the following

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Select XM1 mode.
3. Make sure the audio system is turned off, then turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Push and hold the preset No. 3 and No. 6 buttons.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. While holding the buttons for 5 seconds, then release the buttons.
7. Press and release preset No. 1 button to read the error code. Error Code No. Displayed Error Code Title Displayed Solution ERROR 00 NO ERROR System is normal ERROR 04 NO SIGNAL Move the vehicle to an open area and recheck ERROR 05 NO XM ACTIVATION Contact XM satellite radio at 800-852-9696 ERROR 06 NO XM AUTHORIZATION Contact XM satellite radio at 800-852-9696 ERROR 14 ANTENNA NO CONNECTED/NO SIGNAL Refer to Error code: XM ANTENNA is displayed; With AcuraLink (see «Error code: XM ANTENNA is displayed (with AcuraLink)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-code-xm-antenna-or-xm) ) Without AcuraLink (see «Error code: XM ANTENNA is displayed (without AcuraLink)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-code-xm-antenna-or-xm) ) ERROR 24 ANTENNA SHORTED/NO SIGNAL Refer to Error code: XM ANTENNA is displayed; With AcuraLink (see «Error code: XM ANTENNA is displayed (with AcuraLink)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-code-xm-antenna-or-xm) ) Without AcuraLink (see «Error code: XM ANTENNA is displayed (without AcuraLink)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-code-xm-antenna-or-xm) ) ERROR 55 HARDWARE FAILURE (CONDITIONAL ACCESS FAILURE Replace the AcuraLink control unit (XM receiver) (see «With AcuraLink»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__with-acuralink) ) or the XM receiver (see «Without AcuraLink»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__without-acuralink) ) ERROR 65 HARDWARE FAILURE (CONDITIONAL ACCESS FAILURE Replace the AcuraLink control unit (XM receiver) (see «With AcuraLink»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__with-acuralink) ) or the XM receiver (see «Without AcuraLink»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__without-acuralink) )
8. To end the XM self-diagnosis, turn the audio system off, or turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

XM Signal Reception Level Indication Mode

Note. When you receive any XM complaint, do the XM self-diagnosis to check for any XM error codes. To get the XM error codes, do the following

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Select XM2 mode.
3. Make sure the audio system is turned off, then turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Push and hold the preset No. 3 and No. 6 buttons.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. While holding the buttons for 5 seconds, then release the buttons.
7. Press and release preset No. 1 button to read the error code. Error Code Displayed Solution SG NOSIG Move the vehicle to an open area and recheck. If the signal does not improve, substitute a known-good XM antenna (see) and recheck. SG GOOD The XM signal is OK. SG MARG The XM signal is OK. SG WEAK Move the vehicle to an open area and recheck. If the signal does not improve, substitute a known-good XM antenna (see «XM Antenna Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) and recheck. SG VWEAK Move the vehicle to an open area and recheck. If the signal does not improve, substitute a known-good XM antenna (see «XM Antenna Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) and recheck.
8. To end the XM self-diagnosis, turn the audio system off, or turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

Error Codes

The audio system can display a few error codes when some problems are detected with the audio disc player, the audio disc, the XM radio, or the anti-theft code This is not a complete list of audio error codes Refer to SYMPTOM TROUBLESHOOTING , or go to any official Honda service website for more service information

CD Error Codes

CD ERROR CODES REFERENCE CHART

USB Error Codes

USB ERROR CODES REFERENCE CHART

Audio Unit Error Codes

AUDIO UNIT ERROR CODES REFERENCE CHART

XM Error Codes

XM ERROR CODES REFERENCE CHART

Note. Do these checks with the vehicle parked outside with a clear view of the southern horizon

Poor AM or FM radio reception or interference (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Check for aftermarket accessories including cell phones and chargers plugged into the vehicle accessory power sockets Check the radio reception man open area Poor reception/interference can be caused by any of these conditions The radio station is far away Atmospheric conditions are unfavorable Aftermarket metallic window tint A tall building, mountains, or high-voltage power lines are nearby

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Do the Seek Stop Test (see «SEEK STOP TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__seek-stop-test) ) and the reception level indication in the Self-diagnostic Function (see «RECEPTION LEVEL INDICATION (PUSH AND HOLD 5 SEC AM/FM BUTTON)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__reception-level-indication-push-and-hold) ) Is the test vehicle within 10 % of the known-good vehicle? YES -Multipath interference or weak station Operation is normal NO -Go to step 3
3. Check the reception/interference is the same in several locations Is the reception/interference the same? YES -Go to step 4 NO -Multipath interference or weak station Operation is normal
4. Check the reception/interference while the engine is running Is there noise (static or whine) only with the engine running? YES -Check the antenna and radio grounds If OK, check the charging system and the ignition system NO -Go to step 5
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Remove the right C-pillar trim (see «C-PILLAR TRIM»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__c-pillar-trim) )
7. Check the connections from the AM/FM antenna amplifier to the window antenna Are there any loose or damaged connections? YES -Repair the connections, or substitute a known-good AM/FM antenna amplifier (see «AM/FM ANTENNA AMPLIFIER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__amfm-antenna-amplifier-replacement) ), and retest If the symptom/condition goes away, replace the original AM/FM antenna amplifier NO -Go to step 8
8. With the help of an assistant inside the vehicle, have the assistant shine a strong flashlight (A) along each antenna wire (B) Check from the outside of the vehicle for any breaks or openings in the antenna wires (the light shines through any breaks or cuts) NOTE: It is easier to see the breaks if you do this test in a dark or shaded area Are there any breaks or cuts in the antenna? YES -Repair the window antenna Go to AM/FM antenna repair (see «AM/FM Antenna Repair»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__amfm-antenna-repair) ), or replace the rear window (see «REAR WINDOW REPLACEMENT»(/acura/tl/iv-2008-2011/remont/windows/#windows-and-glass__rear-window-replacement) ) if the damaged section is too long NO -Go to step 9
9. Disconnect the AM/FM antenna amplifier 3P connector
10. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
11. Measure the voltage between AM/FM antenna amplifier 3P connector terminal No 3 and body ground Is there battery voltage? YES -Go to step 17 NO -Go to step 12
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
13. Remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
14. Disconnect audio-navigation unit connector E (5P)
15. Check for continuity between audio-navigation unit connector E (5P) terminal No 3 and AM/FM antenna amplifier 3P connector terminal No 3 Is there continuity? YES -Go to step 16 NO -Repair open in the wire between the audio-navigation unit and the AM/FM antenna amplifier Also check the AM/FM antenna lead/sublead connector
16. Check for continuity between audio-navigation unit connector E (5P) terminal No 3 and body ground Is there continuity? YES -Repair short to body ground in the wire between the audio-navigation unit and the AM/FM antenna amplifier NO -Replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
17. Remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
18. Disconnect audio-navigation unit connector E (5P)
19. Check for continuity between audio-navigation unit connector E (5P) terminal No 1 and AM/FM antenna amplifier 3P connector terminal No 1 Is there continuity? YES -Go to step 20 NO -Replace the AM/FM antenna lead and/or the sublead
20. Check for continuity between audio-navigation unit connector E (5P) terminal No 1 and body ground Is there continuity? YES -Replace the AM/FM antenna lead and/or the sublead NO -Go to step 21
21. Check for continuity between audio-navigation unit connector E (5P) terminal No 2 and AM/FM antenna amplifier 3P connector terminal No 2 Is there continuity? YES -Go to step 22 NO -Replace the AM/FM antenna lead and/or the sublead
22. Check for continuity between audio-navigation unit connector E (5P) terminals No 1 and No 2 Is there continuity? YES -Replace the AM/FM antenna lead and/or the sublead NO -Replace the AM/FM antenna amplifier (see «AM/FM ANTENNA AMPLIFIER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__amfm-antenna-amplifier-replacement) ), and recheck If the reception still poor, replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )

Poor AM or FM radio reception or interference (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Check for aftermarket accessories including cell phones and chargers plugged into the vehicle accessory power sockets Check the radio reception in an open area Poor reception/interference can be caused by any of these conditions The radio station is far away Atmospheric conditions are unfavorable Aftermarket metallic window tint A tall building, mountains, or high-voltage power lines are nearby

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Do the Seek Stop Test (see «SEEK STOP TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__seek-stop-test) ) and the reception level indication in the Self-diagnostic Function (see «RECEPTION LEVEL INDICATION (PUSH AND HOLD 5 SEC AM/FM BUTTON)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__reception-level-indication-push-and-hold) ) Is the test vehicle within 10 % of the known-good vehicle? YES -Multipath interference or weak station Operation is normal NO -Go to step 3
3. Check the reception/interference is the same in several locations Is the reception/interference the same? YES -Go to step 4 NO -Multipath interference or weak station Operation is normal
4. Check the reception/interference while the engine is running Is there noise (static or whine) only with the engine running? YES -Check the antenna and radio grounds If OK, check the charging system and the ignition system NO -Go to step 5
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Remove the right C-pillar trim (see «C-PILLAR TRIM»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__c-pillar-trim) )
7. Check the connections from the AM/FM antenna amplifier to the window antenna Are there any loose or damaged connections? YES -Repair the connections, or substitute a known-good AM/FM antenna amplifier (see «AM/FM ANTENNA AMPLIFIER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__amfm-antenna-amplifier-replacement) ), and retest If the symptom/condition goes away, replace the original AM/FM antenna amplifier NO -Go to step 8
8. With the help of an assistant inside the vehicle, have the assistant shine a strong flashlight (A) along each antenna wire (B) Check from the outside of the vehicle for any breaks or openings in the antenna wires (the light shines through any breaks or cuts) NOTE: It is easier to see the breaks if you do this test in a dark or shaded area Are there any breaks or cuts in the antenna? YES -Repair the window antenna Go to AM/FM antenna repair (see «AM/FM ANTENNA AMPLIFIER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__amfm-antenna-amplifier-replacement) ), or replace the rear window (see «REAR WINDOW REPLACEMENT»(/acura/tl/iv-2008-2011/remont/windows/#windows-and-glass__rear-window-replacement) ) if the damaged section is too long NO -Go to step 9
9. Disconnect the AM/FM antenna amplifier 3P connector
10. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
11. Measure the voltage between AM/FM antenna amplifier 3P connector terminal No 3 and body ground Is there battery voltage? YES -Go to step 17 NO -Go to step 12
12. Turn the ignition switch to LOCK (0), press the engine start/stop button to select the OFF mode
13. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
14. Disconnect audio unit connector E (3P)
15. Check for continuity between audio unit connector E (3P) terminal No 3 and AM/FM antenna amplifier 3P connector terminal No 3 Is there continuity? YES -Go to step 16 NO -Repair open in the wire between the audio unit and the AM/FM antenna amplifier Also check the AM/FM antenna lead/sublead connector
16. Check for continuity between audio unit connector E (3P) terminal No 3 and body ground Is there continuity? YES -Repair short to body ground in the wire between the audio unit and the AM/FM antenna amplifier NO -Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
17. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
18. Disconnect audio unit connector E (3P)
19. Check for continuity between audio unit connector E (3P) terminal No 1 and AM/FM antenna amplifier 3P connector terminal No 1 Is there continuity? YES -Go to step 20 NO -Replace the AM/FM antenna lead and/or the sublead
20. Check for continuity between audio unit connector E (3P) terminal No 1 and body ground Is there continuity? YES -Replace the AM/FM antenna lead and/or the sublead NO -Go to step 21
21. Check for continuity between audio unit connector E (3P) terminal No 2 and AM/FM antenna amplifier 3P connector terminal No 2 Is there continuity? YES -Go to step 22 NO -Replace the AM/FM antenna lead and/or the sublead
22. Check for continuity between audio unit connector E(3P) terminals No 1 and No 2 Is there continuity? YES -Replace the AM/FM antenna lead and/or the sublead NO -Replace the AM/FM antenna amplifier (see «AM/FM ANTENNA AMPLIFIER REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__amfm-antenna-amplifier-replacement) ), and recheck If the reception still poor, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )

Audio unit power switch will not turn on (No information display and no sound) (with navigation)

Note. Check the vehicle battery condition first Check the connectors for poor connections or loose terminals

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Push the power switch on to see if the audio-navigation unit turns on Does the audio-navigation unit display operate properly, and does the audio-navigation unit sound normal? YES -Intermittent failure, the system is OK at this time NO -Go to step 3
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
4. Check the No 15(10 A) fuse in the under-hood fuse/relay box and the No 18 (7 5 A) fuse in the driver's under-dash fuse/relay box Are the fuses OK? YES -Go to step 5 NO -Replace the fuse, and recheck
5. Remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) Check that the audio-navigation unit connectors are properly connected Are they connected properly? YES -Go to step 6 NO -Repair poor connections and reconnect the connectors, and recheck the function
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
7. Measure the voltage between body ground and audio-navigation unit connector A (24P) terminals No 14 and No 24 individually Is there battery voltage? YES -Go to step 8 NO -Repair open in the wire(s) between the No 15 (10 A) fuse in the under-hood fuse/relay box, the No 18 (7 5 A) fuse in the driver's under-dash fuse/relay box and the audio-navigation unit
8. Measure the voltage between audio-navigation unit connector A (24P) terminal No 12 and body ground. Is there less than 0.2 V? YES -Go to step 9 NO -Repair open or high resistance in the wire between audio-navigation unit connector A (24P) terminal No 12 and body ground (G502), (see «DASHBOARD WIRE HARNESS (VIEW OF DRIVER'S SIDE)»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__dashboard-wire-harness-view-of-drivers) ).
9. Measure the voltage between audio-navigation switch panel 24P connector terminal No. 22 and body ground. Is there battery voltage? YES -Go to step 10 NO -Repair an open in the wire(s) between the No. 15 (10 A) fuse in the under-hood fuse/relay box and the audio-navigation switch panel
10. Measure the voltage between audio-navigation switch panel 24P connector terminal No. 10 and body ground. Is there less than 0.2 V? YES -Go to step 11 NO -Repair an open or high resistance in the wire between audio-navigation switch panel 24P connector terminal No. 10 and body ground (G501).
11. Measure the voltage between audio-navigation switch panel 24P connector terminal No 17 and body ground Is there battery voltage? YES -Go to step 12 NO -Repair an open or a short in the wire between the audio-navigation switch panel and the audio-navigation unit.
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
13. Disconnect audio-navigation unit connector F (12P) and the audio-navigation switch panel 24P connector.
14. Check for continuity between audio-navigation switch panel 24P connector terminal No. 14 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between the audio-navigation switch panel and the audio-navigation unit. NO -Go to step 15
15. Check for continuity between audio-navigation unit connector F (12P) terminal No. 12 and audio-navigation switch panel 24P connector terminal No. 14. Is there continuity? YES -Go to step 16 NO -Repair an open in the wire between the audio-navigation switch panel and the audio-navigation unit.
16. Reconnect the audio-navigation switch panel 24P connector.
17. Check for continuity between audio-navigation switch panel 24P connector terminal No. 14 and body ground. Is there continuity? YES -Replace the audio-navigation switch panel (See «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -Go to step 18
18. While press and holding the PWR button, check for continuity between audio-navigation switch panel 24P connector terminal No. 14 and body ground. Is there continuity? YES -Go to step 19 YES -Replace the audio-navigation switch panel (See «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
19. Disconnect the audio-navigation switch panel 24P connector.
20. Check for continuity between audio-navigation unit connector F (12P) and the audio-navigation switch panel 24P connector according to the table AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART Audio-navigation unit connector Audio-navigation switch panel connector Wire color F1 15 YEL F7 16 BRN F8 3 BLU Is there continuity? YES -Go to step 21 NO -There is an open in the wire(s) between the audio-navigation unit and the audio-navigation switch panel. Repair or replace the affected harness.
21. Check for continuity between body ground and the audio-navigation switch panel 24P connector according to the table. AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART Audio-navigation and HVAC switch panel connector Wire color 3 BLU 15 YEL 16 BRN Is there continuity? YES -There is a short in the wires between the audio-navigation unit and the audio-navigation switch panel. Repair or replace the affected harness. NO -Go to step 22
22. Check for continuity between the terminals of the audio-navigation switch panel 24P connector according to the table. AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART From terminal To terminals 4 (GRY) 15 (YEL), 16 (BRN) 15 (YEL) 16 (BRN) Is there continuity? YES -There is a short in the wires between the audio-navigation unit and the audio-navigation switch panel. Replace the affected shielded harness NO -Substitute a known-good audio-navigation switch panel (see «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio-navigation switch panel If the symptom is still present, substitute a known-good audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck If the symptom/indication goes away, replace the original audio-navigation unit.

Audio unit power switch will not turn on (No information display and no sound) (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 91

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Push the power switch on to see if the audio unit turns on Does the audio unit display operate properly, and does the audio unit sound normal? YES -Intermittent failure, the system is OK at this time NO -Go to step 3
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
4. Check the No 15 (10 A) fuse in the under-hood fuse/relay box and the No 18 (7 5 A) fuse in the driver's under-dash fuse/relay box Are the fuses OK? YES -Go to step 5 NO -Replace the fuse, and recheck
5. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Check that the audio unit connectors are properly connected Are they connected properly? YES -Go to step 6 NO -Repair poor connections and reconnect the connectors, and recheck the function
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
7. Measure the voltage between body ground and audio unit connector A (24P) terminals No 14 and No 24 individually Is there battery voltage? YES -Go to step 8 NO -Repair open in the wire(s) between No 15 (10 A) fuse in the under-hood fuse/relay box, the No 18 (7 5 A) fuse in the driver's under-dash fuse/relay box and the audio unit
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
9. Measure the voltage between audio unit connector A (24P) terminal No 12 and body ground Is there less than 0 1 V? YES -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit NO -Repair open in the wire between audio unit connector A (24P) terminal No 12 and body ground (G502) (see «AUDIO WIRE HARNESS»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__audio-wire-harness) )

Audio unit power switch will not turn off (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Check for aftermarket accessories plugged info the vehicle's accessory power sockets

Scheme 93

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Push the PWR button off to see if the audio-navigation unit turns off Does the audio system turn off? YES -Go to step 3 NO -Replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
3. Push the PWR button on, then turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode Does the audio-navigation unit turn off? YES -Operation is normal NO -Go to step 4
4. Remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) Disconnect audio-navigation unit connector A (24P) NOTE: Eject all the CDs before disconnecting the audio-navigation unit to prevent damaging the CD player's load mechanism
5. Measure the voltage between terminal No 14 of audio-navigation unit connector A (24P) and body ground Is there battery voltage? YES -Check for short to power on the PUR wire NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck If the symptom/indication goes away, replace the original audio-navigation unit

Audio unit power switch will not turn off (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Check for aftermarket accessories plugged info the vehicle's accessory power sockets

Scheme 94

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Push the PWR button off to see if the audio unit turns off Does the audio unit turn off? YES -Go to step 3 NO -Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
3. Push the PWR button on, then turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode. Does the audio unit turn off? YES -Operation is normal NO -Go to step 4
4. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Disconnect audio unit connector A (24P). NOTE: Eject all the CDs before disconnecting the audio unit to prevent damaging the CD player's load mechanism.
5. Measure the voltage between terminal No 14 of audio unit connector A (24P) and body ground. Is there battery voltage? YES -Check for short to power on the PUR wire NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit

No sound is heard from the speaker(s) (display is normal) (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Set the fader and balance positions to the center Before doing the troubleshooting, do the Audio-navigation unit power switch will not turn on troubleshooting (see AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITH NAVIGATION) )

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and make sure the volume button is not set to the MIN level Is it at the MIN level? YES -Raise the volume level, and recheck the function NO -Go to step 3
3. Check for sound in each mode (AM/FM and CD or DVD). Is the sound OK in each mode? YES -Intermittent failure. The system is OK at this time. Check for loose connections at the audio-navigation unit and speaker(s). NO - If there is no sound in all modes, Go to step 4 If there is no sound in AM/FM mode, do the AM or FM radio reception interference troubleshooting (see «Poor Am Or Fm Radio Reception Or Interference (With Navigation)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__poor-am-or-fm-radio-reception) ). If there is no sound in CD or DVD mode, do the Audio disc does not play troubleshooting (see «AUDIO DISC DOES NOT PLAY (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-disc-does-not-play-with) ).
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the center console panel (see «CENTER CONSOLE PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#consoles__center-console-panel-removalinstallation) )
6. Disconnect the HandsFreeLink control unit 28P connector (see step 2 on «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system__handsfreelink-control-unit-removalinstallation) )
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and recheck the audio system for sound Did the sound return? YES -Reconnect the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system__handsfreelink-control-unit-removalinstallation) ) NO -Go to step 8
8. Do the speaker check mode with the self-diagnostic function (see «SPEAKER CHECK MODE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__speaker-check-mode) ) Do all speakers produce a tone? YES -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit. NO -Go to step 9
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
10. Check the No. 15 (20A) fuse in the passenger's under-dash fuse/relay box, No. 15 (10A) fuse in the under-hood fuse/relay box, and the No. 18 (7.5A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES -Go to step 11 NO -Replace the fuses and recheck
11. Measure the voltage between stereo amplifier connector A (18P) terminal No. 18 and body ground. Is there battery voltage? YES -Go to step 12 NO -Repair an open in the wire between the No. 15 (20 A) fuse in the passenger's under-dash fuse/relay box and stereo amplifier connector A (18P) terminal No. 18.
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
13. Measure the voltage between stereo amplifier connector B (28P) terminal No. 3 and body ground. Is there battery voltage? YES -Go to step 14 NO -Repair an open in the wire between stereo amplifier connector B (28P) terminal No. 3 and audio-navigation unit connector A (24P) terminal No. 17. If the wire and pin fits are OK, substitute a known-good audio-navigation unit (including the HDD), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit. (See «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ).
14. Measure the voltage between body ground and stereo amplifier connector A (18P) terminal No. 9. Is there less than 0.2 V? YES -Go to step 15 NO -Repair an open or high resistance in the wire between the stereo amplifier connector A (18P) terminal No. 9 and body ground (G653).
15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
16. Check the faulty speaker(s) for damage Is there any damage? YES -Replace the speaker, and recheck NO -Go to step 17
17. Remove the speaker(s) with no sound (see «SPEAKER TEST/REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and disconnect its connector.
18. Check the speaker 2P connector for a loose or poor connection Reconnect the speaker connector, and recheck the symptom, is the condition still present? YES -Go to step 19 NO -Intermittent failure Operation is normal
19. Test the speakers (see «SPEAKER TEST/REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the speaker(s) OK? YES -Go to step 20 NO -Replace the speaker(s) (see «SPEAKER TEST/REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
20. Reconnect the speaker connector(s)
21. Disconnect stereo amplifier connector A (18P)
22. Check for continuity between body ground and stereo amplifier connector A (18P) according to the table below. Speaker Stereo Amplifier Connector Wire Color Driver's door speaker, right tweeter A16 LT GRN A7 BLU Front passenger's door speaker, right tweeter A15 GRY A6 BRN Front center speaker A11 BRN A2 YEL Left rear door speaker A13 RED A4 GRN Right rear door speaker A12 BRN A3 GRY Left rear speaker A17 YEL A8 BLU Right rear speaker A14 BLU A5 YEL Subwoofer A10 GRY A1 LT BLU Is there continuity? YES -Repair a short to body ground in the wire(s) between the stereo amplifier connector and the speaker(s) NO -Go to step 23
23. Disconnect the left tweeter 2P connector and the right tweeter 2P connector.
24. Measure the resistance between each pair of speaker terminals at stereo amplifier connector A (18P) according to the table below. Speaker Stereo Amplifier Connector Wire Color Resistance Driver's door speaker A16 LT GRN About 2 ohms A7 BLU Front passenger's door speaker A15 GRY About 2 ohms A6 BRN Front center speaker A11 BRN About 2 ohms A2 YEL Left rear door speaker A13 RED About 2 ohms A4 GRN Right rear door speaker A12 BRN About 2 ohms A3 GRY Left rear speaker A17 YEL About 2 ohms A8 BLU Right rear speaker A14 BLU About 2 ohms A5 YEL Subwoofer A10 GRY About 2 ohms A1 LT BLU Is there resistance? YES -Go to step 25 NO -Repair an open or short in the wire between the stereo amplifier and the speaker
25. Connect stereo amplifier connector A (18P) terminals with jumper wires
26. Check for continuity between the tweeter 2P connector according to the table. Speaker Terminal Wire Color Left tweeter 1 LT GRN 2 BLU Right tweeter 1 GRY 2 BRN Is there continuity? YES -Go to step 27 NO -Repair an open in the wire between the stereo amplifier and the tweeter
27. Disconnect jumper wires
28. Disconnect stereo amplifier connector (28P)
29. Disconnect audio unit connector D (20P)
30. Check for continuity between body ground and audio-navigation unit connector D (20P) terminals No. 1 and No. 2 individually Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness. NO -Go to step 31
31. Check for continuity between the terminals of audio-navigation unit connector D (20P) according to the table below. From Terminal To Terminals D1 (RED) D2 (GRN), D11 (GRY) D2 (GRN) D11 (GRY) Is there continuity between any of the terminals? YES -There is a short in the wire(s) between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness. NO -Go to step 32
32. Check for continuity between audio-navigation unit connector D (20P) and stereo amplifier connector B (28P) according to the table below. Audio-Navigation Unit Connector Stereo Amplifier Connector Wire Color D1 B1 RED D2 B15 GRN Is there continuity? YES -Go to step 33 NO -There is an open in the wire(s) between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness.
33. Disconnect audio-navigation unit connector B (24P).
34. Check for continuity between audio-navigation unit connector A (24P) and stereo amplifier connector B (28P) according to the table below. Audio-Navigation Unit Connector Stereo Amplifier Connector A6 (WHT) B28 (WHT) A7 (BLK) B14 (BLK) A10 (RED) B27 (RED) A11 (GRN) B13 (GRN) A18 (RED) B25 (RED) A19 (GRN) B11 (BRN) A22 (RED) B24 (RED) A23 (GRN) B10 (GRN) B9 (WHT) B18 (WHT) B10 (BLK) B4 (BLK) B12 (GRN) B6 (GRN) B24 (RED) B19 (RED) Is there continuity? YES -Go to step 35 NO -There is an open in the wire(s) between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness.
35. Check for continuity between body ground and audio-navigation unit connector A (24P) and B (24P) according to the table below. Audio-Navigation Unit Connector Wire Color A6 WHT A7 BLK A9 GRY A10 RED A11 GRN` A18 RED A19 GRN A20 GRY A21 RED A22 GRN A23 GRY B9 WHT B10 BLK B11 GRY B12 GRN B24 RED Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness. NO -Go to step 36
36. Check for continuity between the terminals of stereo amplifier connector B (28P) and audio-navigation unit connectors A (24P) according to the table. From Terminals To Terminals Audio-Navigation Unit Connector Stereo Amplifier Connector Audio-Navigation Unit Connector A20 (GRY) B25 (RED) A18 (GRN) B11 (GRN) A19 (GRN) A21 (GRY) B10 (RED) A22 (RED) B24 (GRN) A23 (GRN) A9 (GRY) B28 (RED) A6 (WHT) B14 (GRN) A7 (BLK) B27 (RED) A10 (RED) B13 (GRN) A11 (GRN) B11 (GRY) B18 (RED) A9 (WHT) B4 (GRN) A10 (BLK) B6 (GRN) A12 (GRN) B19 (RED) A24 (RED) Is there continuity between any of the terminals? YES -There is a short in the wire(s) between the audio-navigation unit and the stereo amplifier. Replace the affected shielded harness. NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) and recheck. If the symptom/indication goes away, replace the original audio-navigation unit. If the symptom is still present, substitute a known-good stereo amplifier (see «STEREO AMPLIFIER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) and recheck. If the symptom/indication goes away, replace the original stereo amplifier.

No sound is heard from the speaker(s) (display is normal) (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Set the fader and balance positions to the center Before doing the troubleshooting, do the audio unit power switch will not turn on troubleshooting (see AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITHOUT NAVIGATION) )

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and make sure the volume button is not set to the MIN level Is it at the MIN level? YES -Raise the volume level, and recheck the function NO -Go to step 3
3. Check for sound in each mode (AM/FM and CD or DVD). Is the sound OK in each mode? YES -Intermittent failure. The system is OK at this time. Check for loose connections at the audio-navigation unit and speaker(s). NO - If there is no sound in all modes, Go to step 4 If there is no sound in AM/FM mode, do the AM or FM radio reception interference troubleshooting (see «POOR AM OR FM RADIO RECEPTION OR INTERFERENCE (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__poor-am-or-fm-radio-reception) ). If there is no sound in CD or DVD mode, do the Audio disc does not play troubleshooting (see «Audio Disc Does Not Play (Without Navigation)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-disc-does-not-play-without) ).
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the center console panel (see «CENTER CONSOLE PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#consoles__center-console-panel-removalinstallation) )
6. Disconnect the HandsFreeLink control unit 28P connector (see step 2 on «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system__handsfreelink-control-unit-removalinstallation) )
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and recheck the audio system for sound Did the sound return? YES -Reconnect the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system__handsfreelink-control-unit-removalinstallation) ) NO -Go to step 8
8. Do the speaker check mode with the self-diagnostic function (see «SPEAKER CHECK MODE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__speaker-check-mode) ) Do all speakers produce a tone? YES -Substitute a known-good audio unit (see «Audio Unit Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit. NO -Go to step 9
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
10. Check the No. 15 (20A) fuse in the passenger's under-dash fuse/relay box, No. 15 (10A) fuse in the under-hood fuse/relay box, and the No. 18 (7.5A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES -Go to step 11 NO -Replace the fuses and recheck
11. Measure the voltage between stereo amplifier connector A (18P) terminal No. 18 and body ground. Is there battery voltage? YES -Go to step 12 NO -Repair an open in the wire between the No. 15 (20 A) fuse in the passenger's under-dash fuse/relay box and stereo amplifier connector A (18P) terminal No. 18.
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
13. Measure the voltage between stereo amplifier connector B (20P) terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 14 NO -Repair an open in the wire between the stereo amplifier and the audio unit. If the wire and pin fits are OK, substitute a known-good audio unit, and recheck. If the symptom/indication goes away, replace the original audio unit (see «Audio Unit Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).
14. Measure the voltage between body ground and stereo amplifier connector A (18P) terminal No. 9. Is there less than 0.2 V? YES -Go to step 15 NO -Repair an open or high resistance in the wire between the stereo amplifier connector A (18P) terminal No. 9 and body ground (G653) (see «RIGHT SIDE WIRE HARNESS (WITHOUT SH-AWD)»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__right-side-wire-harness-without-sh-awd) ).
15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
16. Check the faulty speaker(s) for damage. Is there any damage? YES -Replace the speaker (see «Speaker Test/Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck. NO -Go to step 17
17. Remove the speaker(s) with no sound (see «Speaker Test/Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) and disconnect its connector.
18. Check the speaker 2P connector for a loose or poor connection Reconnect the speaker connector, and recheck the symptom, is the condition still present? YES -Go to step 19 NO -Intermittent failure Operation is normal
19. Test the speaker(s) (see «Speaker Test/Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the speaker OK? YES -Go to step 20 NO -Replace the speaker(s) (see «Speaker Test/Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
20. Reconnect the speaker connector(s)
21. Disconnect stereo amplifier connector A (18P)
22. Check for continuity between body ground and stereo amplifier connector A (18P) according to the table STEREO AMPLIFIER CONNECTOR REFERENCE CHART Speaker Stereo amplifier connector Wire color Driver's door speaker, left tweeter A11 (+) LT GRN A2 (-) BLU Front passenger's door speaker, right tweeter A15 (+) GRY A6 (-) BRN Left rear speaker A10 (+) YEL A1 (-) BLU Right rear speaker A14 (+) BLU A5 (-) YEL Subwoofer A12 (+) GRY A3 (-) LT BLU Front center speaker A16 (+) BRN A7 (-) YEL Is there continuity? YES -Repair short to body ground in the wire(s) between the stereo amplifier and the speaker(s) NO -Go to step 23
23. Disconnect the left tweeter 2P connector and the right tweeter 2P connector.
24. Measure the resistance between each pair of speaker terminals at stereo amplifier connector A (18P) according to the table below. Speaker Stereo Amplifier Connector Wire Color Resistance Driver's door speaker A11 LT GRN About 4 ohms A2 BLU Front passenger's door speaker A15 GRY About 4 ohms A6 BRN Front center speaker A16 BRN About 2 ohms A7 YEL Left rear speaker A10 YEL About 4 ohms A1 BLU Right rear speaker A14 BLU About 4 ohms A5 YEL Subwoofer A12 GRY About 2 ohms A3 LT BLU Is there resistance? YES -Go to step 25 NO -Repair an open or short in the wire between the stereo amplifier and the speaker
25. Connect stereo amplifier connector A (18P) terminals with jumper wires
26. Check for continuity between the tweeter 2P connector according to the table below. Speaker Terminal Wire Color Left tweeter 1 LT GRN 2 BLU Right tweeter 1 GRY 2 BRN Is there continuity? YES -Go to step 27 NO -Repair an open in the wire between the stereo amplifier and the tweeter
27. Disconnect jumper wires.
28. Disconnect audio unit connector A (24P), stereo amplifier connector B (14P), and audio unit connector B (14P) NOTE: Eject all the CDs before disconnecting the audio unit to prevent damaging the CD player's load mechanism.
29. Check for continuity between audio unit connector A (24P), connector B (14P), and stereo amplifier connector B (28P) according to the table below. STEREO AMPLIFIER CONNECTOR REFERENCE CHART Audio unit connector Stereo amplifier connector A18 (RED) B17 (BLK) A19 (GRN) B7 (WHT) A22 (RED) B16 (GRY) A23 (GRN) B6 (GRY) B1 (RED) B14 (GRN) B2 (WHT) B13 (RED) B3 (BLK) B3 (RED) B4 (RED) B19 (GRN) B5 (WHT) B20 (GRY) B8 (GRN) B4 (GRY) B11 (GRN) B9 (WHT) B12 (BLK) B10 (BLK) Is there continuity? YES -Go to step 30 NO -There is an open in the wire(s) between the stereo amplifier and the audio unit Replace the affected shielded harness
30. Check for continuity between audio unit connector A(24P) and B (14P) body ground according to the table AUDIO UNIT CONNECTOR REFERENCE CHART Audio unit connector Wire color A18 RED A19 GRN A20 GRY A21 GRY A22 RED A23 GRN B1 RED B2 WHT B3 BLK B4 RED B5 WHT B6 GRY B8 GRN B9 GRY B11 GRN B12 BLK Is there continuity? YES -There is a short to body ground in the wire(s) between the stereo amplifier and the audio unit Replace the affected shielded harness NO -Go to step 26
31. Check for continuity between the terminals of stereo amplifier connector B (20P) and audio unit connector A (24P) and B (14P) according to the table TERMINAL REFERENCE CHART From terminals To terminals Audio unit connector Stereo amplifier connector Audio unit connector A20 (GRY) B17 (RED) A18 (RED) B7 (GRN) A19 (GRN) A21 (GRY) B16 (RED) A22 (RED) B6 (GRN) A23 (GRN) B6 (GRY) B19 (RED) B4 (RED) B20 (WHT) B5 (WHT) B9 (GRN) B11 (GRN) B10 (BLK) B12 (BLK) B9 (GRY) B14 (RED) B1 (RED) B13 (WHT) B2 (WHT) B3 (BLK) B3 (BLK) B4 (GRN) B8 (GRN) Is there continuity between any of the terminals? YES -There is a short in the wires between the stereo amplifier and the audio unit Replace the affected shielded harness NO -Substitute a known-good audio unit and recheck (see «Audio Unit Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). If the symptom/indication goes away, replace the original audio unit. If the symptom is still present, substitute a known-good stereo amplifier (see «Stereo Amplifier Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) and recheck. If the symptom/indication goes away, replace the original stereo amplifier.

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and check for sound in each mode (AM, FM, XM, and CD) Is there sound from the speakers, and is the sound quality normal in each mode? YES -Intermittent failure, The system is OK at this time Check for loose connections at the audio unit, the amplifier, and each speaker NO -Speakers all work, sound quality is poor If the sound quality is poor only with XM radio, or the XM radio does not function, go to poor or no sound with XM radio (see «POOR OR NO SOUND WITH XM RADIO (AUDIO UNIT DOES DISPLAY XM CHANNELS) (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__poor-or-no-sound-with-xm) ) If the sound quality is poor only with AM or FM, go to poor AM or FM radio reception or interference (see «Poor Am Or Fm Radio Reception Or Interference (With Navigation)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__poor-am-or-fm-radio-reception) ) If the sound is poor in all modes, go to sound quality diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) )

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and check for sound in each mode (AM, FM, XM, and CD) Is there sound from the speakers, and is the sound quality normal in each mode? YES -Intermittent failure The system is OK at this time Check for loose connections at the audio unit, the amplifier, and each speaker NO -Speakers all work, sound quality is poor If the sound quality is poor only with XM radio, or the XM radio does not function, go to poor or no sound with XM radio (see «POOR OR NO SOUND WITH XM RADIO (AUDIO UNIT DOES DISPLAY XM CHANNELS) (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__poor-or-no-sound-with-xm) ) If the sound quality is poor only with AM or FM, go to poor AM or FM radio reception or interference (see «POOR AM OR FM RADIO RECEPTION OR INTERFERENCE (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__poor-am-or-fm-radio-reception) ) If the sound is poor mall modes, go to sound quality diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) )

Radio preset memory is lost (with navigation)

Note. If only XM stations are lost, go to XM radio preset memory is lost with AcuraLink (see XM RADIO PRESET MEMORY IS LOST (USA MODELS WITH NAVIGATION) ), without AcuraLink (see XM RADIO PRESET MEMORY IS LOST (CANADA MODELS WITH NAVIGATION) )

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and set each of the radio station preset buttons Do each of the buttons set properly? YES -Go to step 3 NO -Replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode for 1 minute, then back to ON (II), or the ON mode
4. Test the preset buttons for proper recall operation Do the preset buttons recall the set radio stations? YES -System is normal at this time Check connections at the audio-navigation unit NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck If the symptom/indication goes away, replace the original audio-navigation unit

Radio preset memory is lost (without navigation)

Note. If only XM stations are lost, go to XM radio preset memory is lost (see XM RADIO PRESET MEMORY IS LOST (WITHOUT NAVIGATION) )

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and set each of the radio station preset buttons Do each of the buttons set properly? YES -Go to step 3 NO -Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode for 1 minute, then turn it back to ON (II), or the ON mode.
4. Test the preset buttons for proper recall operation Do the preset buttons recall the set radio stations? YES -System is normal at this time Check connections at the audio unit NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit.

Volume does not change (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Set the fader and balance positions to the center

Scheme 124

Scheme 125

Scheme 126

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and check for sound in each mode (AM, FM, XM, and CD) Is the sound normal? YES -Go to step 3 NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or no sound is heard from speaker(s) (display is normal) (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) )
3. Operate the volume knob to see if the volume changes Does the volume change? YES -Operation is normal NO -Go to step 4
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Disconnect the audio switch panel 24P connector and audio-navigation unit connector F (12P)
6. Check for continuity between the audio-navigation switch panel 24P connector terminals No. 5 and No. 12 and audio-navigation unit connector F (12P) terminals No. 1 and No. 13 respectively. Is there continuity? YES -Go to step 7 NO -There is an open in the wire(s) between the audio-navigation unit and the audio-navigation switch panel Replace the affected shielded harness
7. Check for continuity between the audio-navigation switch panel 24P connector and body ground according to the table AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART Audio-navigation switch panel connector Wire color 1 BLU 13 PNK Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit and the audio-navigation switch panel Replace the affected shielded harness NO -Go to step 8
8. Check for continuity between the terminals of audio-navigation switch panel 24P connector according to the table TERMINAL REFERENCE CHART From terminal To terminals 1 (BLU) 2 (GRY), 13 (PNK) 2 (GRY) 13 (PNK) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the audio-navigation switch panel Replace the affected shielded harness NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck If the symptom-indication goes away, replace the original audio-navigation unit. If the symptom is still present, substitute a known-good audio-navigation switch panel (see «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio-navigation switch panel

Volume does not change (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Set the fader and balance positions to the center

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and check for sound in each mode (AM, FM, XM, and CD) Is the sound normal? YES -Go to step 3 NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or no sound is heard from speaker(s) (display is normal), (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) )
3. Operate the volume knob to see if the volume changes Does the volume change? YES -Operation is normal NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit.

Radio tuner does not change stations (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connection or loose terminals

Scheme 127

Scheme 128

Scheme 129

Scheme 130

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and check the audio information on the display panel Does the audio information display properly? YES -Go to step 3 NO -Go to power switch will not turn on (No information display and no sound). (see «AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-unit-power-switch-will-not) )
3. Operate the tuning knob to see if the radio station changes Does the radio station change? YES -Intermittent failure, the tuning knob is OK at this time NO -Go to step 4
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Disconnect the audio-navigation switch panel 24P connector and audio-navigation unit connector F (12P)
6. Check for continuity between audio-navigation unit connector F (12P) and the audio-navigation switch panel 24P connector according to the table AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART Audio-navigation unit connector Audio-navigation switch panel connector Wire color F3 18 PUR F9 6 LT BLU Is there continuity? YES -Go to step 7 NO -There is an open in the wire(s) between the audio-navigation unit and the audio-navigation switch panel Replace the affected shielded harness
7. Check for continuity between the audio-navigation switch panel 24P connector and body ground according to the table AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART Audio-navigation switch panel connector Wire color 6 LT BLU 18 PUR Is there continuity? YES -There is a short to body ground in the wire(s) between audio-navigation unit and audio-navigation switch panel. Replace the affected shielded harness NO -Go to step 8
8. Check for continuity between the terminals of audio-navigation switch panel 24P connector according to the table TERMINAL REFERENCE CHART From terminal To terminals 5 (GRY) 6 (LT BLU), 18 (PUR) 6 (LT BLU) 18 (PUR) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the audio-navigation switch panel Replace the affected shielded harness NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck If the symptom/indication goes away, replace the original audio unit If the symptom is still present, substitute a known-good audio-navigation switch panel (see «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio-navigation switch panel

Radio tuner does not change stations (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connection or loose terminals

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and check the audio information on the display panel Does the audio information display properly? YES -Go to step 3 NO -Go to power switch will not turn on (see «AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-unit-power-switch-will-not) )
3. Operate the tuning knob to see if the radio station changes Does the radio station change? YES -Intermittent failure, the tuning knob is OK at this time NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 131

Scheme 132

Scheme 133

Scheme 134

1. Remove the audio-navigation switch panel (see «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
2. Check the connections at the audio-navigation switch panel 24P connector and audio-navigation unit connector F (12P) Are the connectors and terminals connected properly? YES -Go to step 3 NO -Repair the connection, and recheck
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
4. Measure the voltage between audio-navigation switch panel 24P connector terminals No 21 and No 22 and body ground individually Is there battery voltage? YES -Go to step 5 NO -Repair open in the wire between the No 15 (10 A) fuse in the under-hood fuse/relay box and audio-navigation switch panel 24P connector terminal No 22, or repair open in the wire between the No 16(7 5 A) fuse in the driver's under-dash fuse/relay box and the audio-navigation switch panel 24P connector terminal No 21
5. Measure the voltage between audio-navigation switch panel 24P connector terminal No 10 and body ground Is there less than 0.2 V? YES -Go to step 6 NO -Repair open or high resistance in the wire between audio-navigation switch panel 24P connector terminal No 10 and body ground (G501) (see «AUDIO WIRE HARNESS»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__audio-wire-harness) )
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
7. Disconnect audio-navigation unit connector F (12P)
8. Check for continuity between audio-navigation unit connector F (12P) and the audio-navigation switch panel 24P connector according to the table AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART Audio-navigation unit connector Audio-navigation switch panel connector Wire color F7 16 BRN F1 15 YEL F8 3 BLU Is there continuity? YES -Go to step 9 NO -There is an open in the wire(s) between the audio-navigation unit and the audio-navigation switch panel Repair or replace the affected shielded harness
9. Check for continuity between the terminals of the audio-navigation switch panel 24P connector and body ground according to the table AUDIO-NAVIGATION SWITCH PANEL CONNECTOR REFERENCE CHART Audio-navigation switch panel connector Wire color 3 BLU 15 YEL 16 BRN Is there continuity? YES -There is a short in the wires between the audio-navigation unit and the audio-navigation switch panel Repair or replace the affected shielded harness NO -Go to step 10
10. Check for continuity between the terminals of audio-navigation switch panel 24P connector according to the table TERMINAL REFERENCE CHART From terminal To terminals 4 (GRY) 15 (YEL), 16 (BRN) 15 (YEL) 16 (BRN) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the audio-navigation switch panel Replace the affected shielded harness NO -Substitute a known-good audio-navigation switch panel (see «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio-navigation switch panel.If the symptom is still present, substitute a known-good audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Scheme 139

Scheme 140

1. Remove the audio-HVAC display unit (see «AUDIO-HVAC DISPLAY UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
2. Check the connections at the audio-HVAC display unit 12P connector and audio unit connector D (20P) Are the connectors and terminals connected properly? YES -Go to step 3 NO -Repair the connection, and recheck
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
4. Measure the voltage between audio-HVAC display unit 12P connector terminals No 5 and No 6 and body ground individually Is there battery voltage? YES -Go to step 5 NO -Repair open in the wire between the No 15 (10 A) fuse in the under-hood fuse/relay box and audio-HVAC display unit 12P connector terminal No 6, or repair open in the wire between the No 16 (7 5 A) fuse in the driver's under-dash fuse/relay box and audio-HVAC display unit 12P connector terminal No 5
5. Measure the voltage between audio-HVAC display unit 12P connector terminal No 9 and body ground Is there less than 0.2 V? YES -Go to step 6 NO -Repair open or high resistance in the wire between audio-HVAC display 12P connector terminal No 9 and body ground (G501) (see «AUDIO WIRE HARNESS»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__audio-wire-harness) )
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
7. Disconnect audio unit connector D (20P)
8. Check for continuity between audio unit connector D (20P) and the audio-HVAC display unit 12P connector according to the table AUDIO-HVAC DISPLAY UNIT CONNECTOR REFERENCE CHART Audio unit connector Audio-HVAC display unit connector Wire color D6 2 BRN D7 1 YEL D17 4 BLU Is there continuity? YES -Go to step 9 NO -There is an open in the wire(s) between the audio unit and the audio-HVAC display unit Replace the affected shielded harness
9. Check for continuity between the terminals of the audio unit connector D (20P) and body ground according to the table AUDIO UNIT CONNECTOR REFERENCE CHART Audio unit connector Wire color D6 BRN D7 YEL D17 BLU Is there continuity? YES -There is a short to body ground in the wire(s) between the audio unit and the audio-HVAC display unit Repair or replace the affected shielded harness NO -Go to step 10
10. Check for continuity between the terminals of audio unit connector D (20P) according to the table TERMINAL REFERENCE CHART From terminal To terminals 6 (BRN) 7 (YEL), 16 (GRY) 7 (YEL) 16 (GRY) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio unit and the audio-HVAC display unit. Replace the affected shielded harness NO -Substitute a known-good audio-HVAC display unit (see «AUDIO-HVAC DISPLAY UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the original audio-HVAC display unit. If the symptom/indication is still present, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).

Audio-navigation switch panel button illumination does not work (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 141

Scheme 142

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn the combination lighting switch to the parking light position
3. Check the illumination of the audio-navigation switch panel buttons Are the buttons illuminated? YES -Intermittent problem The audio-navigation switch panel is OK at this time Check for loose or poor connections at the audio-navigation switch panel 24P connector NO -Go to step 4
4. Check the illumination of several other buttons not related to the audio system Are the buttons illuminated? YES -Go to step 5 NO -Troubleshoot the interior lights Start by checking the No 6 (7 5 A) fuse in the passenger's under-dash fuse/relay box If the fuse is OK, check for an open in the wire between passenger's under-dash fuse/relay box and the audio-navigation switch panel
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Disconnect the audio-navigation switch panel 24P connector and the gauge control module 32P connector
7. Check for continuity between audio-navigation switch panel 24P connector terminals No 11 and No 12 and gauge control module 32P connector terminal No 8 and No 27 Is there continuity? YES -Go to step 8 NO -Repair open in the wire between the gauge control module and the audio-navigation switch panel
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
9. With the headlight switch still on, measure the voltage between audio-navigation switch panel 24P connector terminal No 23 and body ground Is there battery voltage? YES -Check the connections at the audio-navigation switch panel 24P connector If all connections are OK, substitute a known-good audio-navigation switch panel (see «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indicated goes away, replace the original audio-navigation switch panel NO -Repair open in the wire between the passenger's under-dash fuse/relay box and the audio-navigation switch panel

Audio switch panel button illumination does not work (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 143

Scheme 144

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn the combination lighting switch to the parking light position
3. Check the illumination of the audio unit buttons Are the buttons illuminated? YES -Intermittent problem, the audio unit is OK at this time Check for loose or poor connections at audio unit connector A (24P) NO -Go to step 4
4. Check the illumination of several other buttons not related to the audio system Are the buttons illuminated? YES -Go to step 5 NO -Troubleshoot the interior lights Start by checking the No 6 (7 5 A) fuse in the passenger's under-dash fuse/relay box If the fuse is OK, check for an open in the wire between the passenger's under-dash fuse/relay box and the audio unit
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Disconnect audio unit connector A (24P) NOTE: Eject all the CDs before removing the audio unit to prevent damaging the CD player's load mechanism
7. Disconnect the gauge control module 32P connector
8. Check for continuity between audio unit connector A (24P) terminal No 1 and gauge control module 32P connector terminal No 8 Is there continuity? YES -Go to step 9 NO -Repair open in the wire between the gauge control module and the audio unit
9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
10. With the headlight switch still on, measure the voltage between audio unit connector A (24P) terminal No 13 and body ground Is there battery voltage? YES -Check the connections at audio unit connector A (24P) If all connections are OK, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -Repair open in the wire between the passenger's under-dash fuse/relay box and the audio unit

Audio remote switch does not work properly (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 145

Scheme 146

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and check the audio remote switch operation (volume up, volume down, CH (UP), CH (DOWN), MODE) Is the audio system operation OK? YES -Intermittent failure, the audio remote switch is OK at this time Check for loose connections NO -Go to step 3
3. Test the audio remote switch (see «Audio Remote Switch Test»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the audio remote switch OK? YES -Go to step 4 NO -Replace the audio remote, HFL-navigation voice control switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/tl/iv-2008-2011/remont/electronic-steering/#power-steering-system) )
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
6. Disconnect audio-navigation unit connector A (24P) NOTE: Eject all the CDs before disconnecting audio-navigation unit to prevent damaging the CD player's load mechanism
7. Reconnect the audio remote switch, and measure the resistance between audio-navigation unit connector A (24P) terminals No 5 and No 16 as specified in the table AUDIO REMOTE SWITCH TABLE AUDIO REMOTE SWITCH REFERENCE CHART Button held down VOL DOWN VOL UP CH (-) CH (+) MODE No button pressed Resistance about 100 ohms about 357 ohms about 775 ohms about 1.7 kohms about 3.7 kohms about 10 kohms Is the resistance OK? YES -Go to step 8 NO -Repair short or high resistance in the circuit between the audio-navigation unit and the audio remote switch If the wires are OK, replace the cable reel (see «DISPOSAL OF DAMAGED COMPONENTS»(/acura/tl/iv-2008-2011/remont/airbag/#srs-supplemental-restraint-system__disposal-of-damaged-components) )
8. Disconnect the audio remote, HFL-navigation voice control switch 12P connector
9. Check for continuity between body ground and terminals No 5 and No 16 of audio-navigation unit connector A (24P) individually Is there continuity? YES -Repair short to body ground in the circuit between the audio-navigation unit and the audio remote switch If the wires are OK, replace the cable reel (see «CABLE REEL REPLACEMENT»(/acura/tl/iv-2008-2011/remont/airbag/#srs-supplemental-restraint-system) ) NO -Replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )

Audio remote switch does not work properly (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 147

Scheme 148

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and check the audio remote switch operation (volume up, volume down, CH (UP), CH (DOWN), MODE) Is the audio system operation OK? YES -Intermittent failure, the audio remote switch is OK at this time Check for loose connections NO -Go to step 3
3. Test the audio remote switch (see «Audio Remote Switch Test»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the audio remote switch OK? YES -Go to step 4 NO -Replace the audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/tl/iv-2008-2011/remont/electronic-steering/#power-steering-system) )
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
5. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
6. Disconnect audio unit connector A (24P) NOTE: Eject all the CDs before disconnecting audio unit to prevent damaging the CD player's load mechanism
7. Reconnect the audio remote switch, and measure the resistance between audio unit connector A (24P) terminals No 5 and No 16 as specified in the table AUDIO REMOTE SWITCH TABLE AUDIO REMOTE SWITCH REFERENCE CHART Button held down VOL DOWN VOL UP CH (-) CH (+) MODE No button pressed Resistance about 100 ohms about 357 ohms about 775 ohms about 1.7 kohms about 3.7 kohms about 10 kohms Is the resistance OK? YES -Go to step 8 NO -Repair short or high resistance in the circuit between the audio unit and the audio remote switch If the wires are OK, replace the cable reel (see «DISPOSAL OF DAMAGED COMPONENTS»(/acura/tl/iv-2008-2011/remont/airbag/#srs-supplemental-restraint-system__disposal-of-damaged-components) )
8. Disconnect the audio remote-HFL switch 12P connector
9. Check for continuity between body ground and terminals No 5 and No 16 of audio unit connector A (24P) individually Is there continuity? YES -Repair short to body ground in the circuit between the audio unit and the audio remote switch If the wires are OK, replace the cable reel (see «CABLE REEL REPLACEMENT»(/acura/tl/iv-2008-2011/remont/airbag/#srs-supplemental-restraint-system) ) NO -Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )

Audio disc does not load (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio-navigation unit They may jam and damage the player mechanism Make sure the audio disc is compatible with the system (see the owner's manual for more information)

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and insert a known-good disc to see if the symptom can be duplicated Does the disc load? YES -Operation is normal If the disc loads normally, but will not play, go to Audio disc does not play (see «AUDIO DISC DOES NOT PLAY (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-disc-does-not-play-with) ) NO -Go to step 3
3. Insert another disc Does the disc load? YES -The original disc is faulty NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) If the symptom/indication goes away, replace the original audio-navigation unit.

Audio disc does not load (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio unit They may jam and damage the player mechanism Make sure the audio disc is compatible with the system (see the owner's manual for more information)

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and insert a known-good disc to see if the symptom can be duplicated Does the disc load? YES -Operation is normal If the disc loads normally, but will not play, go to Audio disc does not play (see «Audio disc does not play (without navigation)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-disc-does-not-play-without) ) NO -Go to step 3
3. Insert another disc Does the disc load? YES -The original disc is faulty? NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) If the symptom/indication goes away, replace the original audio unit?

Audio disc does not eject (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Disc labels should not be used in the audio-navigation unit They may jam and damage the player mechanism Check the connectors for poor connections or loose terminals

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit Does the system turn on? YES -Go to step 3 NO -Go to audio unit power switch will not turn on (see «AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-unit-power-switch-will-not) )
3. Check to see if the disc ejects correctly with no binding when you push the EJECT button Does the disc eject properly? YES -Operation is normal NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) If the symptom/indication goes away, replace theoriginal audio-navigation unit.

Audio disc does not eject (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Disc labels should not be used in the audio unit They may jam and damage the player mechanism Check the connectors for poor connections or loose terminals

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit Does the system turn on? YES -Go to step 3 NO -Go to audio unit power switch will not turn on (see «AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-unit-power-switch-will-not) )
3. Check to see if the disc ejects correctly with no binding when you push the EJECT button Does the disc eject properly? YES -Operation is normal NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) If the symptom/indication goes away, replace the orinal audio unit

Audio disc changer does not load all six discs (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio unit They may jam and damage the player mechanism

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and try loading six discs into the audio unit (in-dash disc changer) Does the audio unit accept all six discs? YES -Intermittent failure, the audio unit is OK at this time NO -Go to step 3
3. Try loading the disc player with six known-good discs Does the audio unit (m-dash disc changer) accept all six discs? YES -At least one of the original discs is faulty NO -Substitute a known-good audio unit (in-dash disc changer) (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit (m-dash disc changer)

Audio disc changer does not move between discs (without navigation)

Note. Check the vehicle battery condition first. (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio unit They may jam and damage the player mechanism

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Insert six discs into the audio unit (m-dash disc changer), and see if the changer moves between discs Does the changer operate normally? YES -Intermittent failure, the disc changer is OK at this time NO -Go to step 3
3. Insert six known-good discs into the audio unit Does the changer operate normally? YES -At least one of the original discs is faulty NO -Substitute a known-good audio unit (in-dash disc changer) (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit (in-dash disc changer).

Audio disc does not play (with navigation)

Special tools required

Diagnostic CD 07AAZ-SDBA100

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio-navigation unit They may jam and damage the player mechanism

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio-navigation unit, and try loading a disc Does the disc load? YES -Go to step 3 NO -Go to audio disc does not load (see «AUDIO DISC DOES NOT LOAD (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-disc-does-not-load-with) )
3. Insert a known-good disc to see if the symptom can be duplicated Does the disc play? YES -Operation is normal NO -Go to step 4
4. Insert audio diagnostic CD (T/N 07AAZ-SDBA100) in the audio-navigation unit Does the disc play? YES -The original disc is faulty or has an unreadable format NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) If the symptom/indication goes away, replace the original audio-navigation unit

Audio disc does not play (without navigation)

Special tools required

Diagnostic CD 07AAZ-SDBA100

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio unit They may jam and damage the player mechanism

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio unit, and try loading a disc Does the disc load? YES -Go to step 3 NO -Go to audio disc does not load (see «AUDIO DISC DOES NOT LOAD (WITH NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__audio-disc-does-not-load-with) )
3. Insert a known-good disc to see if the symptom can be duplicated Does the disc play? YES -Operation is normal NO -Go to step 4
4. Insert audio diagnostic CD (T/N 07AAZ-SDBA100) in the audio unit Does the disc play? YES -The original disc is faulty or has an unreadable format NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) If the symptom/indication goes away, replace the original audio unit

Audio disc skips (with navigation)

Special tools required

1. Diagnostic CD 07AAZ-SDBA100
2. Skip test CD 07AAZ-SDBA200
3. Skip test CD 07AAZ-SDBA300

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio-navigation unit They may jam and damage the player mechanism

1. Confirm the vehicles tires are properly inflated
2. Check the client's disc for scratches and fingerprints NOTE: The following test should be done with the audio system bass and treble set to the client's listening settings When comparing to known-good vehicles, do the comparison on the same model and trim level
3. Test-drive the vehicle to identify when the client's disc skips The audio diagnostic CD (T/N 07AAZ-SDBA100) can be used if the client's CD is not available, use tracks 10-12 Does the disc skip? YES -Go to step 4 NO -Operation is normal
4. Compare the client's CD that skips to a known-good vehicle under the same conditions Does the disc skip in the known-good vehicle under the same conditions? YES -The disc player operation is normal, the problem is with the client's disc NO -Go to step 5 NOTE: Do the following test with vehicle parked and the engine running
5. Insert the diagnostic skip test CD (T/N 07AAZ-SDBA300) Play tracks 2-11, and note on which track number(s) the disc starts skipping Do the same test on a known-good vehicle Does the disc skip on the same track(s) as the known-good vehicle? YES -Operation is normal NO -Go to step 6
6. Insert the diagnostic skip test CD (T/N 07AAZ-SDBA200) Play tracks 7-11 and tracks 13-15, and note on which track number(s) the disc starts skipping Do the same test on a known-good vehicle Does the disc skip on the same track number (s) as the known-good vehicle? YES -Operation is normal NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) If the symptom/indication goes away, replace the original audio-navigation unit

Audio disc skips (without navigation)

Special tools required

1. Diagnostic CD 07AAZ-SDBA100
2. Skip test CD 07AAZ-SDBA200
3. Skip test CD 07AAZ-SDBA300

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Disc labels should not be used in the audio unit They may jam and damage the player mechanism

1. Confirm the vehicles tires are properly inflated
2. Check the client's disc for scratches and fingerprints NOTE: The following test should be done with the audio system bass and treble set to the client's listening settings When comparing to known-good vehicles, do the comparison on the same model and trim level
3. Test-drive the vehicle to identify when the client's disc skips The audio diagnostic CD (T/N 07AAZ-SDBA100) can be used if the client's CD is not available, use tracks 10-12 Does the disc skip? YES -Go to step 4 NO -Operation is normal
4. Compare the client's CD that skips to a known-good vehicle under the same conditions Does the disc skip in the known-good vehicle under the same conditions? YES -The disc player operation is normal, the problem is with the client's disc NO -Go to step 5 NOTE: Do the following test with vehicle parked and the engine running
5. Insert the diagnostic skip test CD (T/N 07AAZ-SDBA300) Play tracks 2-11, and note on which track number(s) the disc starts skipping Do the same test on a known-good vehicle Does the disc skip on the same track(s) as the known-good vehicle? YES -Operation is normal NO -Go to step 6
6. Insert the diagnostic skip test CD (T/N 07AAZ-SDBA200) Play tracks 7-11 and tracks 13-15, and note on which track number(s) the disc starts skipping Do the same test on a known-good vehicle Does the disc skip on the same track number(s) as the known-good vehicle? YES -Operation is normal NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) If the symptom/indication goes away, replace the original audio unit

Audio unit button does not work (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals In order to troubleshoot the main power switch, go to Power switch will not turn on (see AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITH NAVIGATION) )

1. Operate all items in the appropriate switch list Switch list AM/FM, XM, TITLE, , DISC, HDD/AUX, Preset 1-6, CATEGORY+/-, SKIP, TUNE, SCAN, A SEL, AUDIO, VOL Do all the items in the appropriate switch list work properly? YES -Operation is normal NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) If the symptom/indication goes away, replace the audio-navigation unit If the symptom still present, substitute a known-good audio-navigation switch panel (see «AUDIO-NAVIGATION SWITCH PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the audio-navigation switch panel

Audio unit button does not work (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals In order to troubleshoot the main power switch, go to Power switch will not turn on (see AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITHOUT NAVIGATION) )

1. Operate all items in the appropriate switch list Switch list AM/FM, XM, CD, AUX, TITLE, CLOCK, Preset 1-6, CATEGORY+/-, SKIP, SCAN, A SEL, RETURN, SET UP, , SEL, VOL Do all the items in the appropriate switch list work properly? YES -Operation is normal NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) If the symptom/indication goes away, replace the original audio unit

Audio unit disc indicator does not work (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Discs with labels should not be used in the audio-navigation unit They may jam and damage the player mechanism

1. Turn on the audio system
2. Insert a known-good disc or press the EJECT button Is the DISC indicator (LED) indicated? YES -The audio-navigation unit is OK at this time Check for loose or poor connections at the audio-navigation unit and the audio-navigation switch panel NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck If the symptom/indication goes away, replace the original audio-navigation unit

Audio unit disc indicator does not work (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Discs with labels should not be used in the audio unit They may jam and damage the player mechanism

1. Turn on the audio system
2. Insert a known-good disc or press the EJECT button Is the DISC indicator (LED) indicated? YES -The audio unit is OK at this time Check for loose or poor connections at the audio unit and the audio panel NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck If the symptom/indication goes away, replace the original audio unit

USB device does not function (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Make sure you have the client's USB device to use for testing Check the USB device requirement: Mass-storage class ready digital audio player with USB 2.0 port More than 256 MB of RAM Support MP3, WMA, and AAC (encoded with the iTunes) files, DRM files are not supported Not all players and player functions work with the USB jack Please see the owner's manual for more information Always test the clients USB device in a known-good vehicle of the same year and trim (if possible) Technologies change and are updated frequently which may result in that USB devices may work in newer vehicles, but not in older vehicles of the same model. If UNSUPPORTED appears on the display, the vehicle is OK, there is a software problem with the USB device.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio system.
3. Press the HDD/AUX button, and check if it changes to USB mode NOTE: Do not connect the USB device. Is USB NO DATA displayed in the audio display? YES -Go to step 4 NO - Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Connect the client's USB device to a known-good vehicle (same year/trim) that is equipped with a USB adapter, and check the USB device operation. Is the USB device working properly in the known-good vehicle? YES -Go to step 6. NO -If the audio display displays UNSUPPORTED or MEDIA ERROR, the USB device may not be supported or is defective. If the audio display displays USB NO MUSIC, the USB device may have no music files or wrong type music files are on the device. See the Owner's Manual for details on USB device requirements and approved file types.
6. On the client's vehicle, connect the client's USB device to the USB port.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Turn on the audio system.
9. Check the USB device operation in the client's vehicle. Does the USB device work properly in the client's vehicle? YES -The system is OK at this time. Inspect the connectors of the USB device, USB port and USB adapter for wear. NO -Check the navigation system error code (see «HOW TO CHECK ERROR HISTORY»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__how-to-check-error-history) ).

USB device does not function (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Make sure you have the client's USB device to use for testing Check the USB device requirement: Mass-storage class ready digital audio player with USB 2.0 port More than 256 MB of RAM Support MP3, WMA, and AAC (encoded with the iTunes) files, DRM files are not supported Not all players and player functions work with the USB jack Please see the owner's manual for more information Always test the clients USB device in a known-good vehicle of the same year and trim (if possible) Technologies change and are updated frequently which may result in that USB devices may work in newer vehicles, but not in older vehicles of the same model. If UNSUPPORTED appears on the display, the vehicle is OK, there is a software problem with the USB device.

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Scheme 157

Scheme 158

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio system.
3. Press the HDD/AUX button, and check if it changes to USB mode NOTE: Do not connect the USB device. Is USB NO DATA displayed in the audio display? YES -Go to step 4 NO - Go to step 16
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Connect the client's USB device to a known-good vehicle (same year/trim) that is equipped with a USB adapter, and check the USB device operation. Is the USB device working properly in the known-good vehicle? YES -Go to step 6 NO -If the audio display displays UNSUPPORTED or MEDIA ERROR, the USB device may not be unsupported or is defective. If the audio display displays USB NO MUSIC, the USB device may have no music files or wrong type music files are on the device. See the Owner's Manual for details on USB device requirements and approved file types.
6. On the client's vehicle, connect the client's USB device to the USB port.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Turn on the audio system.
9. Check the USB device operation in the client's vehicle. Does the USB device work properly in the client's vehicle? YES -The system is OK at this time. Inspect the connectors of the USB device, USB port and USB adapter for wear. NO -Go to step 10
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. On the client's vehicle, remove the USB device.
12. Disconnect USB adapter unit connector B (5P)
13. Check for continuity between USB adapter control unit connector B (5P) and the USB port 5P connector according to the table below. USB ADAPTER UNIT CONNECTOR REFERENCE CHART USB adapter unit connector USB jack B1 1 B2 2 B3 3 B4 4 B5 5 Is there continuity? YES -Replace the USB adapter unit (see «USB ADAPTER CONTROL UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -Go to step 14
14. Disconnect the USB adapter 5P connector.
15. Check for continuity between the USB adapter 5P connector and the USB port 5P connector according to the table below. USB ADAPTER UNIT CONNECTOR REFERENCE CHART USB adapter unit connector USB jack B1 1 B2 2 B3 3 B4 4 B5 5 Is there continuity? YES -There is an open in the wire(s) between the USB adapter control unit and the USB adapter. NO -Replace the affected shielded harness Replace the USB adapter unit (see «USB ADAPTER CONTROL UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), then recheck.
16. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
17. Measure the voltage between USB adapter control unit connector A (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 19 NO -Go to step 18
18. Measure the voltage between audio unit connector C (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Repair an open or high resistance in the wire between the USB adapter control unit connector A (14P) terminal No. 1 and audio unit connector C (14P) terminal No. 1. NO - Replace the audio unit. (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).
19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
20. Measure the voltage between USB adapter unit connector A (14P) terminal No 11 and body ground. Is there less than 0.2 V? YES -Go to step 21 NO -Repair an open or high resistance in the wire between USB adapter control unit connector A (14P) terminal No. 11 and audio unit connector C (14P) terminal No. 11.
21. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
22. Disconnect these items: Audio unit connector C (14P) USB adapter control unit connector A (14P) XM receiver connector A (14P)
23. Check for continuity between USB adapter control unit connector A (14P) terminal No. 2 and body ground. Is there continuity? YES Repair a short to body ground in the wire between USB adapter control unit connector A (14P) terminal No. 2 and audio unit connector C (14P) terminal No. 2. NO -Go to step 24
24. Check for continuity between audio unit connector C (14P) terminal No. 2 and USB adapter control unit connector A (14P) terminal No. 2. Is there continuity? YES -Go to step 25 NO -Repair an open in the wire between audio unit connector C (14P) terminal No. 2 and USB adapter control unit connector A (14P) terminal No. 2
25. Check for continuity between USB adapter control unit connector A (14P) and audio unit connector C (14P) according to the table below. USB ADAPTER UNIT CONNECTOR REFERENCE CHART USB adapter control unit connector Audio unit connector Wire color A9 C9 PNK A10 C10 BLU Is there continuity? YES -Go to step 26 NO -There is an open in the wire(s) between the audio unit and the USB adapter control unit. Replace the affected shielded harness.
26. Disconnect the HandsFreeLink control unit 28P connector.
27. Check for continuity between body ground and audio unit connector C (14P) according to the table below. USB ADAPTER UNIT CONNECTOR REFERENCE CHART Audio unit connector Wire color C9 PNK C10 BLU Is there continuity? YES -There is a short to body ground in the wire(s) between the audio unit and the USB adapter control unit. Replace the affected shielded harness. NO -Go to step 28
28. Check for continuity between the terminals of audio unit connector C (14P) according to the table below TERMINAL REFERENCE CHART From terminal To terminals C3 (GRY) C9 (PNK), C10 (BLU) C9 (PNK) C10 (BLU) Is there continuity between any of the terminals? YES -There is a short in the wires between the USB adapter control unit and the audio unit. Replace the affected shielded harness. NO -Substitute a known-good USB adapter control unit, (see «USB ADAPTER CONTROL UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the original USB adapter control unit. If the symptom/indication is still present, Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).

USB input sound is low or cannot be heard (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Not all players and player functions work with the USB jack Please see the owner's manual for more information Always test the clients USB device in a known-good vehicle of the same year and trim (if possible) Technologies change and are updated frequently which may result in that USB devices may work in newer vehicles, but not in older vehicles of the same model.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Do the speaker check mode with the self-diagnostic mode (see «SPEAKER CHECK MODE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__speaker-check-mode) ) Do all speakers make a sound? YES -Go to step 3 NO -Go to «No Sound Is Heard From The Speaker(S) (Display Is Normal) (With Navigation)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the)
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
4. On the client's vehicle, connect the client's USB device to the USB adapter
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
6. Turn on the audio system
7. Press the HDD/AUX button until USB appears on the audio display
8. Check if the USB device can be operated with the audio-navigation unit (Folders or Files UP/DOWN, etc.) Can you operate the USB device, but there is no sound heard? YES -Go to step 9 NO -If the sound is normal, the USB device is OK at this time If the USB device cannot be operated, go to «USB device does not function (with navigation)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__usb-device-does-not-function-with)
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
10. Connect the client's USB device to a known-good vehicle (same year/trim) that is equipped with a USB adapter, and check the USB device operation Is the USB device working properly in the known-good vehicle? YES -Replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) NO -USB device is faulty or not compatible Also check the USB cable and USB adapter connector condition

USB input sound is low or cannot be heard (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals Not all players and player functions work with the USB adapter Please see the owner's manual for more information

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1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Do the speaker check mode with the self-diagnostic mode (see «SPEAKER CHECK MODE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__speaker-check-mode) ) Do all speakers make a sound? YES -Go to step 3 NO -Go to «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the)
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
4. On the client's vehicle, connect the client's USB device to the USB adapter
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
6. Turn on the audio system
7. Press the AUX button until USB appears on the audio display
8. Check if the USB device can be operated with the audio-navigation unit (Folders or Files UP/DOWN, etc.) Can you operate the USB device, but there is no sound heard? YES -Go to step 9 NO -If the sound is normal, the USB device is OK at this time If the USB device cannot be operated, go to «USB DEVICE DOES NOT FUNCTION (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__usb-device-does-not-function-without)
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
10. Connect the client's USB device to a known-good vehicle (same year/trim) that is equipped with a USB adapter, and check the USB device operation Is the USB device working properly in the known-good vehicle? YES -Go to step 11 NO -USB device is faulty Also check the USB cable and USB adapter connector condition
11. Return to the client's vehicle
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
13. Turn on the audio unit, and check for sound in each mode (XM and Bluetooth audio) Is the sound normal? YES -Go to step 14 NO -Go to XM or «HFL SYSTEM TROUBLESHOOTING»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system__hfl-system-troubleshooting) .
14. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
15. Measure the voltage between USB adapter control unit connector A (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 17 NO -Go to step 16
16. Measure the voltage between audio unit connector C (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Repair an open or high resistance in the wire between the USB adapter control unit connector A (14P) terminal No. 1 and audio unit connector C (14P) terminal No. 1. NO -Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
17. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
18. Measure the voltage between USB adapter control unit connector A (14P) terminal No. 11 and body ground. Is there less than 0.2 V? YES -Go to step 19 NO -Repair an open or high resistance in the wire between USB adapter control unit connector A (14P) terminal No. 11 and audio unit connector C (14P) terminal No. 11.
19. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
20. Disconnect these items: Audio unit connector C (14P) USB adapter control unit connector A (14P) XM receiver connector A (14P)
21. Check for continuity between USB adapter control unit connector A (14P) terminal No. 2 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between USB adapter control unit connector A (14P) terminal No. 2 and audio unit connector C (14P) terminal No. 2. NO -Go to step 22
22. Check for continuity between audio unit connector C (14P) terminal No. 2 and USB adapter control unit connector A (14P) terminal No. 2. Is there continuity? YES -Go to step 23 NO -Repair an open in the wire between audio unit connector C (14P) terminal No. 2 and USB adapter control unit connector A (14P) terminal No. 2.
23. Check for continuity between audio unit connector C (14P) and the USB adapter unit connector A14P according to the table USB ADAPTER UNIT CONNECTOR REFERENCE CHART Audio unit connector USB adapter unit connector Wire color C5 A5 GRN C6 A6 BLK C13 A13 WHT C14 A14 RED Is there continuity? YES -Substitute a known-good USB adapter unit (see «USB ADAPTER UNIT REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) then reconnect all of the connectors, and recheck If the symptom/indication goes away, replace the original USB adapter unit. If the symptom/indication is still present, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -There is an open in the wire(s) between the audio unit and the USB adapter unit. Replace the affected shielded harness

Error code: XM NO SIGNAL or XM LOADING is displayed (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connection or loose terminals Check for other error codes (see ERROR CODES , and check the XM Antenna Signal Reception Level (see XM SIGNAL RECEPTION LEVEL INDICATION MODE ).

1. Park the vehicle outside with a clear view of the southern horizon
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
3. Check for other XM error codes (see XM error codes under «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) ). Are there other XM error codes displayed? YES -Go to «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) . NO -Go to 4
4. Turn on the audio system, and press the XM button to select the XM radio. Does the XM radio receive a signal? YES -Reception interference operation is normal NO -Go to 5
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Check the XM antenna 2P connector and AcuraLink control unit (XM receiver) connector B (2P) Are the connectors connected? YES -Go to step 7 NO -Reconnect the XM antenna 2P connector and AcuraLink control unit (XM receiver) connector B (2P), and recheck XM radio operation. If the signal is restored, the system is OK. If the signal is not restored, go to step 7.
7. Substitute a known-good XM antenna (see «XM Antenna Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). Does the XM radio receive a signal? YES -USA models: Substitute a known-good XM antenna lead. If the AcuraLink control unit (XM receiver) receives a signal, replace the original XM antenna lead. If the AcuraLink control unit (XM receiver) does not receive a signal, replace the AcuraLink control unit (XM receiver) (see «AcuraLink Control Unit (XM Receiver) Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). NO -Canada models: Substitute a known-good XM antenna lead. If the XM receiver receives signal, replace the original XM antenna lead. If the XM receiver does not receive signal, replace the XM receiver (see «XM Receiver Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).

Error code: XM NO SIGNAL or XM LOADING is displayed (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connection or loose terminals Check for other error codes (see ERROR CODES , and check the XM Antenna Signal Reception Level (see XM SIGNAL RECEPTION LEVEL INDICATION MODE ).

1. Park the vehicle outside with a clear view of the southern horizon
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
3. Check for other XM error codes (see XM error codes under «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) ). Are there other XM error codes displayed? YES -Go to «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) . NO -Go to 4
4. Turn on the audio unit, and select XM radio. Does the XM radio receive a signal? YES -Reception interference operation is normal NO -Go to 5
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Check the XM antenna 2P connector and AcuraLink control unit (XM receiver) connector B (2P) Are the connectors connected? YES -Go to step 7 NO -Reconnect the XM antenna 2P connector and XM receiver connector B (2P), and recheck the XM radio operation. If the signal is restored, the system is OK. If the signal is not restored, go to step 7.
7. Substitute a known-good XM antenna (see «XM Antenna Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). Does the XM radio receive a signal? YES -Replace original XM antenna (see «XM Antenna Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). NO -Substitute a known-good XM antenna lead. If the XM receiver receives signal, replace the original XM antenna lead. If the XM receiver does not receive a signal, (see «XM Receiver Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).

Error code: XM ANTENNA or XM LOADING is displayed (with AcuraLink)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connection or loose terminals If you replace the AcuraLink control unit (XM receiver), the AcuraLink must be reactivated by Acura Client Services. Check for other error codes (see ERROR CODES , and check the XM Antenna Signal Reception Level (see XM SIGNAL RECEPTION LEVEL INDICATION MODE ).

1. Check the connector at the AcuraLink control unit (XM receiver) Is the connector connected? YES -Go to step 2 NO -Reconnect the connector(s) If the error message does not go away, go to step 2
2. Check the XM antenna 2P connector. Is the connector connected? YES -Go to step 3 NO -Reconnect the connector(s) If the error message does not go away, go to step 4
3. Check for other XM error codes (see XM error codes under «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) ). Are there other XM error codes displayed? YES -Go to «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) . NO -Go to 4
4. Substitute a known-good XM antenna (see «XM ANTENNA REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the error message gone? YES -Replace the original XM antenna (see «XM ANTENNA REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -Go to step 5
5. Substitute a known-good AcuraLink control unit (XM receiver) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the error message gone? YES -Update the AcuraLink control unit (see «ACURALINK CONTROL UNIT UPDATE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#acuralink) ) if it does not have the latest software, then recheck If the software is the latest, substitute a known-good XM antenna lead, and recheck If the AcuraLink control unit (XM receiver) receivers a signal, replace the original XM antenna lead If the symptom/indication is still present, replace the AcuraLink control unit (XM receiver) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). NO -Replace the XM antenna lead.

Error code: XM ANTENNA or XM LOADING is displayed (without AcuraLink)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connection or loose terminals Check for other error codes (see ERROR CODES , and check the XM Antenna Signal Reception Level (see XM SIGNAL RECEPTION LEVEL INDICATION MODE ).

1. Check the connector at the XM receiver Is the connector connected? YES -Go to step 2 NO -Reconnect the connector(s) If the error message does not go away, go to step 2
2. Check the XM antenna 2P connector. Is the connector connected? YES -Go to step 3 NO -Reconnect the connector(s) If the error message does not go away, go to step 4
3. Check for other XM error codes (see XM error codes under «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) ). Are there other XM error codes displayed? YES -Go to «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) . NO -Go to 4
4. Substitute a known-good XM antenna (see «XM ANTENNA REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the error message gone? YES -Replace the original XM antenna (see «XM ANTENNA REPLACEMENT»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -Go to step 5
5. Substitute a known-good AcuraLink control unit (XM receiver) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) Is the error message gone? YES -Substitute a known-good XM antenna lead. If the XM receiver receives signal, replace the original XM antenna lead. If the XM receiver does not receive a signal, (see «XM Receiver Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). NO -Replace original XM antenna (see «XM Antenna Replacement»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).

XM radio display is blank and no station information is displayed (USA models with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals If you replace the XM receiver, the AcuraLink must be reactivated by Acura Client Services

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1. Measure the voltage between AcuraLink control unit (XM receiver) connector A (32P) terminal No 1 and body ground Is there battery voltage? YES -Go to step 2 NO -Repair open in the wire between No 15 (10 A) fuse in the under-hood fuse/relay box and AcuraLink control unit (XM receiver) connector A (32P) terminal No 1
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
3. Measure the voltage between body ground and AcuraLink control unit (XM receiver) connector A (32P) terminals No. 2 and No. 3 individually. Is there battery voltage? YES -Go to step 4 NO -Repair open in the wire between the No 18 (7.5 A) fuse in the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (32P) terminal No 3
4. Measure the voltage between AcuraLink control unit (XM receiver) connector A (32P) terminal No. 28 and body ground. Is there less than 0.2 V? YES -Go to step 5 NO -Repair open or high resistance in the wire between AcuraLink control unit (XM receiver) connector A (32P) terminal No 28 and body ground (G501) (see «AUDIO WIRE HARNESS»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__audio-wire-harness) )
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect these items Audio-navigation unit connector C (14P) HandsFreeLink control unit 28P connector AcuraLink control unit (XM receiver) connector A (14P) Navigation display unit 32P connector
7. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector C(14P) according to the table AUDIO-NAVIGATION UNIT CONNECTOR REFERENCE CHART AcuraLink control unit (XM receiver) connector Audio-navigation unit connector Wire color A30 C9 PNK A31 C10 BLU Is there continuity? YES -Go to step 8 NO -There is an open in the wire(s) between the audio-navigation unit and the AcuraLink control unit (XM receiver) Replace the affected shielded harness
8. Check for continuity between body ground and AcuraLink control unit (XM receiver) connector A (32P) according to the table below. AUDIO-NAVIGATION UNIT CONNECTOR REFERENCE CHART AcuraLink control unit (XM receiver) connector Wire color A30 PNK A31 BLU Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit and the AcuraLink control unit (XM receiver) Replace the affected shielded harness NO -Go to step 9
9. Check for continuity between the terminals of AcuraLink control unit (XM receiver) connector A (32P) according to the table TERMINAL REFERENCE CHART From terminal To terminals A29 (GRY) A30 (PNK), A31 (BLU) A30 (PNK) A31 (BLU) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the AcuraLink control unit (XM receiver) Replace the affected shielded harness NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck If the symptom/indication goes away, replace the original audio-navigation unit If the symptom is still present, substitute a known-good AcuraLink control unit or update the AcuraLink control unit (see «ACURALINK CONTROL UNIT UPDATE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#acuralink) ), if it does not have the latest software, then recheck If the symptom/indication goes away after the substitution, replace the original AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) If the symptom/indication goes away after the update, troubleshooting is complete If the symptom/indication is still present, go to step 1 and recheck

XM radio display is blank and no station information is displayed (Canada models with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

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1. Measure the voltage between XM receiver connector A (14P) terminal No 1 and body ground Is there battery voltage? YES -Go to step 3 NO -Go to step 2
2. Measure the voltage between audio-navigation unit connector C (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Repair an open or high resistance in the wire between the XM receiver connector A (14P) terminal No. 1 and audio-navigation unit connector C (14P) terminal No. 1. NO -Replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
4. Measure the voltage between XM receiver connector A (14P) terminal No 11 and body ground Is there less than 0.2 V? YES -Go to step 7 NO -Repair open or high resistance in the wire between XM receiver connector A (14P) terminal No 11 and audio-navigation unit connector C (14P) terminal No 11
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Disconnect audio-navigation unit connector C (14P) and XM receiver connector A (14P).
7. Check for continuity between XM receiver connector A (14P) terminal No. 2 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between XM receiver connector A (14P) terminal No. 2 and audio-navigation unit connector C (14P) terminal No. 2. NO -Go to step 8
8. Check for continuity between audio-navigation unit connector C (14P) terminal No. 2 and XM receiver connector A (14P) terminal No. 2. Is there continuity? YES -Go to step 9 NO -Repair an open in the wire between audio-navigation unit connector C (14P) terminal No. 2 and XM receiver connector A (14P) terminal No. 2
9. Check for continuity between XM receiver connector A (14P) and audio-navigation unit connector C (14P) according to the table below XM receiver connector Audio-navigation unit connector Wire color A9 C9 PNK A10 C10 BLU Is there continuity? YES -Go to step 10 NO -There is an open in the wire(s) between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.
10. Disconnect the HandsFreeLink control unit 28P connector.
11. Check for continuity between body ground and audio-navigation unit connector C (14P) according to the table below. Audio-navigation unit connector Wire color C9 PNK C10 BLU Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit and the XM receiver. Replace the affected shielded harness. NO -Go to step 12
12. Check for continuity between the terminals of XM receiver connector A (14P) according to the table below. From terminal To terminals C3 (GRY) C9 (PNK), C10 (BLU) C9 (PNK) C10 (BLU) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the XM receiver Replace the affected shielded harness NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit. If the symptom/indication is still present, replace the XM receiver (see «XM RECEIVER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).

XM radio display is blank and no station information is displayed (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connectors for poor connections or loose terminals

Scheme 177

Scheme 178

1. Measure the voltage between XM receiver connector A (14P) terminal No 1 and body ground Is there battery voltage? YES -Go to step 3 NO -Go to step 2
2. Measure the voltage between audio unit connector C (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Repair an open or high resistance in the wire between the XM receiver connector A (14P) terminal No. 1 and audio unit connector C (14P) terminal No. 1. NO -Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
4. Measure the voltage between XM receiver connector A (14P) terminal No 11 and body ground Is there less than 0.2 V? YES -Go to step 7 NO -Repair open or high resistance in the wire between XM receiver connector A (14P) terminal No 11 and audio-navigation unit connector C (14P) terminal No 11
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Disconnect these items: Audio unit connector C (14P) USB adapter control unit connector A (14P) XM receiver connector A (14P)
7. Check for continuity between XM receiver connector A (14P) terminal No. 2 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between XM receiver connector A (14P) terminal No. 2 and audio-navigation unit connector C (14P) terminal No. 2. NO -Go to step 8
8. Check for continuity between audio unit connector C (14P) terminal No. 2 and XM receiver connector A (14P) terminal No. 2. Is there continuity? YES -Go to step 9 NO -Repair an open in the wire between audio unit connector C (14P) terminal No. 2 and XM receiver connector A (14P) terminal No. 2
9. Check for continuity between XM receiver connector A (14P) and audio unit connector C (14P) according to the table below. XM receiver connector Audio-unit connector Wire color A9 C9 PNK A10 C10 BLU Is there continuity? YES -Go to step 10 NO -There is an open in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness.
10. Disconnect the HandsFreeLink control unit 28P connector.
11. Check for continuity between body ground and audio-navigation unit connector C (14P) according to the table below. Audio unit connector Wire color C9 PNK C10 BLU Is there continuity? YES -There is a short to body ground in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness. NO -Go to step 12
12. Check for continuity between the terminals of XM receiver connector A (14P) according to the table below. From terminal To terminals C3 (GRY) C9 (PNK), C10 (BLU) C9 (PNK) C10 (BLU) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio unit and the XM receiver Replace the affected shielded harness NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the original audio unit. If the symptom/indication is still present, replace the XM receiver (see «XM RECEIVER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).

XM radio preset memory is lost (USA models with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Make sure the remotes are linked Check the connectors for poor connections or loose terminals If you replace the AcuraLink control unit (XM receiver), the AcuraLink must be reactivated by Acura Client Services If you can only tune to channel 000, 001, 174, and 247, make sure the audio-navigation unit is set to channel mode (see owners manual), if it is set to channel mode, call XM Satellite Radio client support, and check the account activation status

Scheme 179

Scheme 180

Scheme 181

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio system and set each of the XM radio channel preset buttons Do each of the XM radio channel preset buttons set properly? YES -Go to step 3 NO -Go to step 5
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode for 1 minute, then back to ON (II), or the ON mode
4. Test all of the XM radio channel preset buttons for proper recall operation Do the preset buttons recall the set radio stations? YES -System is normal at this time Check connections at the audio-navigation unit NO -Go to step 5
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Measure the voltage between AcuraLink control unit (XM receiver) connector A (32P) terminal No 1 and body ground Is there battery voltage? YES -Go to step 7 NO -Repair open in the wire between the No 15 (10 A) fuse in the under-hood fuse/relay box and AcuraLink control unit (XM receiver) connector A (32P) terminal No 1
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
8. Measure the voltage between AcuraLink control unit (XM receiver) connector A (32P) terminals No 2 and No 3 and body ground individually Is there battery voltage? YES -Go to step 9 NO -Repair open in the wire between the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (32P) terminal No 2, or repair an open in the wire between the No. 18 (7.5 A) fuse in the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (32P) terminal No 3
9. Measure the voltage between AcuraLink control unit (XM receiver) connector A (32P) terminal No 28 and body ground Is there less than 0.2 V? YES -Replace the AcuraLink control unit (XM receiver) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -Repair open or high resistance in the wire between AcuraLink control unit (XM receiver) connector A (32P) terminal No 28 and body ground (G501) (see «AUDIO WIRE HARNESS»(/acura/tl/iv-2008-2011/remont/body-electrical/#connectors-and-harnesses__audio-wire-harness) )

XM radio preset memory is lost (Canada models with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Make sure the remotes are linked Check the connectors for poor connections or loose terminals If you can only tune to channel 000, 001, 174, and 247, make sure the audio-navigation unit is set to channel mode (see owner's manual), if it is set to channel mode, call XM radio client support, and check the account activation status

Scheme 182

Scheme 183

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio system, and set each of the XM radio channel preset buttons Do each of the XM radio channel preset buttons set properly? YES -Go to step 3 NO -Go to step 5
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode for 1 minute, then back to ON (II), or the ON mode
4. Test all of the XM radio channel preset buttons for proper recall operation Do the preset buttons recall the set radio stations? YES -Intermittent failure, the system is normal at this time Check connections at the audio-navigation unit NO -Go to step 5
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Measure the voltage between XM receiver connector A (14P) terminal No 1 and body ground Is there battery voltage? YES -Go to step 8 NO -Go to step 7
7. Measure the voltage between audio-navigation unit connector C (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Repair an open or high resistance in the wire between the XM receiver connector A (14P) terminal No. 1 and audio-navigation unit connector C (14P) terminal No. 1 NO -Replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Measure the voltage between XM receiver connector A (14P) terminal No 11 and body ground Is there less than 0.2 V? YES -Replace the XM receiver (see «XM Receiver Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). NO -Repair open or high resistance in the wire between XM receiver connector A (14P) terminal No 11 and audio-navigation unit connector C (14P) terminal No 11

XM radio preset memory is lost (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Make sure the remotes are linked Check the connectors for poor connections or loose terminals If you can only tune to channel 000, 001, 174, and 247, make sure the audio unit is set to channel mode (see owner's manual), if it is set to channel mode, call XM radio client support, and check the account activation status

Scheme 184

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio system, and set each of the XM radio channel preset buttons Do each of the XM radio channel preset buttons set properly? YES -Go to step 3 NO -Go to step 5
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode for 1 minute, then back to ON (II), or the ON mode
4. Test all of the XM radio channel preset buttons for proper recall operation Do the preset buttons recall the set radio stations? YES -Intermittent failure, the system is normal at this time Check the connections at the audio unit NO -Go to step 5
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
6. Measure the voltage between XM receiver connector A (14P) terminal No 1 and body ground Is there battery voltage? YES -Go to step 8 NO -Go to step 7
7. Measure the voltage between audio unit connector C (14P) terminal No. 1 and body ground. Is there battery voltage? YES -Repair an open or high resistance in the wire between the XM receiver connector A (14P) terminal No. 1 and audio unit connector C (14P) terminal No. 1. NO -Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ).
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Measure the voltage between XM receiver connector A (14P) terminal No 11 and body ground Is there less than 0.2 V? YES -Replace the XM receiver (see «XM Receiver Removal/Installation»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ). NO -Repair open or high resistance in the wire between audio unit connector C (14P) terminal No 11 and XM receiver connector A (14P) terminal No 11

Poor or no sound with XM radio (Audio unit does display XM channels) (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connector for poor connections or loose terminals Check the radio reception in an open area Poor reception/interference can be caused by tall buildings, mountains, or high-voltage power lines are nearby If you can only tune to channel 000, 001, 174, and 247, make sure the audio-navigation unit is set to channel mode (see owner's manual), if it is set to channel mode, call XM Satellite Radio client support, and check the account activation status If you replace the XM receiver, the AcuraLink must be reactivated by Acura Client Services

Scheme 185

Scheme 186

Scheme 187

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio system and select XM radio
3. Check for an error message on the display Are there any messages displayed? YES -Go to error code list (see «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) ) NO -Go to step 4
4. Disconnect these items Audio-navigation unit connector C (14P) HandsFreeLink control unit 28P connector AcuraLink control unit (XM receiver) connector A (32P)
5. Check for continuity between audio-navigation unit connector C (14P) and body ground according to the table Then check for continuity between the same terminals listed in the table and audio-navigation unit connector C (14P) terminal No 4 (the harness shield) AUDIO-NAVIGATION UNIT CONNECTOR REFERENCE CHART Audio-navigation unit connector Wire color C5 GRN C6 BLK C13 WHT C14 RED Is there continuity? YES -There is a short in the wires between the audio-navigation unit and the XM receiver Replace the affected shielded harness NO -Go to step 6
6. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector C (14P) according to the table AUDIO-NAVIGATION UNIT CONNECTOR REFERENCE CHART Audio-navigation unit connector AcuraLink control unit (XM receiver) connector Wire color C5 A13 GRN C6 A15 BLK C13 A14 WHT C14 A16 RED Is there continuity? YES -Substitute a known-good AcuraLink control unit (XM receiver) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), then reconnect all connectors, and recheck If the symptom/indication goes away, update the AcuraLink control unit (see «ACURALINK CONTROL UNIT UPDATE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#acuralink) ) if it does not have the latest software, then recheck If the software is the latest, replace the AcuraLink control unit (XM receiver) If symptom/indication is still present, replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) ) NO -There is an open in the wire(s) between the audio-navigation unit and the AcuraLink control unit (XM receiver) Replace the affected shielded harness

Poor or no sound with XM radio (Audio unit does display XM channels) (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ) Check the connector for poor connections or loose terminals Check the radio reception in an open area Poor reception/interference can be caused by tall buildings, mountains, or high-voltage power lines are nearby If you can only tune to channel 000 ,001, 174, and 247, make sure the audio unit is set to channel mode (see owners manual), if it is set to channel mode, call XM Satellite Radio client support, and check the account activation status

Scheme 188

Scheme 189

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
2. Turn on the audio system and select XM radio
3. Check for an error message on the display Are there any messages displayed? YES -Go to error code list (see «ERROR CODES»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__error-codes) ) NO -Go to step 4
4. Disconnect these items Audio unit connector C (14P) HandsFreeLink control unit 28P connector XM receiver connector A (14P) USB adapter unit connector A (14P)
5. Check for continuity between audio unit connector C (14P) and body ground according to the table Then check for continuity between the same terminals listed in the table and audio unit connector C (14P) terminal No 4 (the harness shield) AUDIO UNIT CONNECTOR REFERENCE CHART Audio unit connector Wire color C5 GRN C6 BLK C13 WHT C14 RED Is there continuity? YES -There is a short in the wires between the audio unit and the XM receiver Replace the affected shielded harness NO -Go to step 6
6. Check for continuity between XM receiver connector A(14P)and audio unit connector C (14P) according to the table AUDIO UNIT CONNECTOR REFERENCE CHART Audio unit connector XM receiver connector Wire color C5 A14 GRN C6 A6 BLK C13 A13 WHT C14 A5 RED Is there continuity? YES -Substitute a known-good XM receiver (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), then reconnect all connectors, and recheck If the symptom/indication goes away, replace the original XM receiver If symptom/indication is still present, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) NO -There is an open in the wire(s) between the audio unit and the XM receiver Replace the affected shielded harness

Sound Quality Diagnosis

Special Tools Required

Diagnostic CD 07AAZ-SDBA100

Use the following tests to check sound quality

Note. Before beginning the following tests, write down the client's bass, treble, fader and balance settings, then set them to their center positions for the testing

Left/Right Channel ID

Do this test to confirm proper channel routing

1. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
2. Play track No 1 (left, both, right channel ID) at a normal, or slightly higher than normal, volume level
3. The voice should be audible only from the channel or channels when indicated If the channel ID is correct for each side, go to «PHASE TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__phase-test) If the channel ID is not correct, check for Shorted speaker wire Faulty amplifier Faulty audio unit

Phase Test

Do this test to confirm proper speaker phasing

1. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
2. Play track No 2 (phase) at a normal, or slightly higher than normal, volume level
3. The voice should sound centered and focused when it is in-phase
4. The voice should sound diffused, and have less bass when it is out of phase If the voice changes from m-phase to out of phase as indicated by the prompt, the phasing is correct Go to electrical noise test (see «ELECTRICAL NOISE TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__electrical-noise-test) ) If the voice always sounds out of phase, phasing is not correct Check for Crossed speaker wire Faulty amplifier Faulty audio unit

Electrical Noise Test

Do this test to check for electrical noise being induced into the audio system

Note. Electrical noise may be caused by outside sources that cannot be handled by the audio system Make sure you remove any cell phones and/or turn off any aftermarket devices before beginning this test

1. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
2. Play track No 4 (digital zero) at a normal, or slightly higher than normal, volume level
3. Operate any electrical device that may create electrical noise in the audio system, including starting the engine
4. Play track No 5 (near digital zero) at a normal, or slightly higher than normal, volume level
5. Operate any electrical device that may create electrical noise in the audio system, including starting the engine
6. Play track No 6 (SNR) at a normal, or slightly higher than normal, volume level
7. Operate any electrical device that may create electrical noise in the audio system, including starting the engine If no abnormal noise is heard, go to the individual speaker test (see «ELECTRICAL NOISE TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__electrical-noise-test) ) If the noise is present only during the SNR track, replace the audio unit If the noise is heard during the digital zero or near digital zero track, check for Poor ground at the audio unit, amplifier, engine, or battery cable Pinched or shorted speaker or amplifier wire Faulty amplifier Faulty audio unit Other faulty components causing excessive electrical noise (ignition coils, alternator, door lock actuators, etc.) Disconnect any suspect components, and then replay the tracks that were originally noisy If the noise is gone, check the component's circuit and the component

Individual Speaker Test

Do this test to identify a faulty speaker

1. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
2. Play track No 30 (steady 300 Hz tone) at a normal, or slightly higher than normal, volume level
3. Listen to each speaker for poor sound compared to the other channels Use the audio unit's fader and balance settings to help isolate the channel with the problem If the sound quality produced by a specific speaker is poor, substitute it with a known-good speaker If the poor sound quality continues, go to the sound balance test (see «SOUND BALANCE TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__sound-balance-test) ) If the sound quality is OK, go to the sound balance test (see «SOUND BALANCE TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__sound-balance-test) )

Sound Balance Test

Do this test to identify a faulty channel or speaker

1. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
2. Confirm the bass and treble are set to the center positions
3. Play track No 3 (pink noise) at a normal, or slightly higher than normal, volume level
4. A static type sound should be heard through all speakers
5. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit of a known-good vehicle
6. Set the bass and treble to the center positions
7. Play track No 3 (pink noise) all the same level as was played in step 3
8. Compare the sounds made by the two vehicles If the sound does not have as much bass, check the subwoofer and circuit If the sound does not have enough hiss, check the tweeters and their circuits

Frequency Sweep

Do this test to find rattles or reverberations that may cause a perception of poor sound quality

1. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
2. Play track No 13 (sweep from 500 Hz to 35 Hz) at a normal, or slightly higher than normal, volume level
3. Listen to each speaker for poor sound quality or reverberations caused by specific frequencies Use the voice-over to estimate the frequency that causes the vibration Use the audio unit's fader and balance settings to help isolate the channel with the problem If vibrations or poor sound quality are heard, go to step 4 If no vibrations or poor sound quality are heard, go to sound judging (see «SOUND JUDGING»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__sound-judging) )
4. Choose the appropriate track from No 14 to 25 (small range frequency sweep) or 26 to 53 (single frequencies) to recreate the frequency that caused the poor sound quality or vibration witnessed in step 3, this aids in diagnosis of the cause NOTE: When you get to the track that recreates the problem, select the repeat function on the audio unit, this will help you isolate the cause
5. Replace or insulate the source of the vibration or, if the speaker is the source of the poor sound quality, replace it

Sound Judging

Do this test to compare overall sound quality, imaging, and dynamics between the client's vehicle and a known-good vehicle Only use a vehicle of the same model and trim level for this test

1. In the client's vehicle, set the bass, treble, fader, and balance settings to the client's normal settings that were written down before beginning the test
2. Insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
3. Play tracks No 7 to 12 (sound quality, midland, dynamics, and imaging demonstration tracks) at a normal, or slightly higher than normal, volume level Write down the volume setting being used
4. Listen to areas of the track that stand out as being either very clear or poorer than other areas of the track
5. In a known-good vehicle, insert the audio diagnostic CD (T/N 07AAZ-SDBA100) into the audio unit
6. Play the tracks at the same volume level and the same bass, treble, balance, and fader settings as used in step 3 in the client's vehicle
7. Listen to the same area of the track that stood out as being either very clear or poorer than other areas of the track
8. Compare the client's vehicle's sound quality results the known-good vehicle's results If the sound quality in the client's vehicle is comparable to the sound quality in the known-good vehicle, then the client's vehicle is operating as designed If the sound quality is not comparable, check these items in order Loose or improperly installed speakers or other hardware that may create interference from the vibrations generated by the speakers Poor power or ground to the stereo amplifier Damaged speaker(s) Faulty amplifier Faulty audio unit

Seek Stop Test

Do this test to check the performance of the audio unit's AM and FM reception Refer to symptom troubleshooting audio sound weak or distorted, or no sound is heard from the speaker(s) (display is normal) with navigation (see NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION) ), without navigation (see NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT NAVIGATION) ) before continuing with this test

Note. Window tint, aftermarket theft-recovery devices and other aftermarket devices may affect reception Changes in cloud cover and other atmospheric conditions will affect the ability of the audio unit to receive radio signals

1. Park the client's vehicle in an open area away from buildings or other obstructions
2. Park a known-good vehicle (same year, model, and trim level) next to the client's vehicle, facing the same direction
3. Start the engine in the client's vehicle, and turn on the radio
4. 4 Set the FM receiver to 87.7 MHz
5. Press the Seek + button, and record the first station that the audio unit locks onto
6. Press the Seek + button repeatedly, and write down each station that the audio unit locks onto until the station recorded in step 5 is reached again
7. Set the AM receiver to 530 kHz
8. Press the Seek + button, and record the first station that the audio unit locks onto
9. Press the Seek + button repeatedly, and write down each station that the audio unit locks onto until the station recorded in step 8 is reached again
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
11. Start the engine in the known-good vehicle, and then do steps 4 thru 10 on the known-good vehicle
12. Compare the number of stations received in steps 6 and 9 in the client's vehicle with the number of stations received in the known-good vehicle If the number of stations received is the same, or within 10 %, the audio unit's tuner performance is OK The problem may be atmospheric conditions, multi-path interference, or other obstructions to the radio signal If the client's vehicle receives fewer stations by at least 10 %, go to step 2 of poor AM or FM radio reception or interference with navigation (see «SYMPTOM TROUBLESHOOTING»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ), without navigation (see «POOR AM OR FM RADIO RECEPTION OR INTERFERENCE (WITHOUT NAVIGATION)»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system__poor-am-or-fm-radio-reception) )

Without Navigation

SRS components are located in this area Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service

Note. Put on gloves to protect your hands Take care not to scratch the dashboard and related parts Lay a shop towel under the parts when working on them to protect the face panel from scratches or other damage Eject all the discs before removing the audio unit to prevent damaging the CD player's load mechanism If you are replacing the audio unit, write down the audio presets (if possible), then enter them into the new audio unit

Scheme 190

Scheme 191

1. Make sure you have the anti-theft codes for the audio system
2. Remove the center dashboard trim (see «CENTER TRIM REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#dashboard) )
3. Remove the dashboard center vent (see «DASHBOARD CENTER VENT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#dashboard) )
4. Carefully remove the bolts, then pull the audio unit (A) out Bolt Specifications: 5 x 0.8 mm, 4.4 N.m (0.45 kgf m, 3.2 lbf ft
5. Disconnect the connectors, and detach the clips (B)
6. Remove the climate control switches (see «CLIMATE CONTROL UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/automatic-hvac-system/#climate-control-system) )
7. Remove the bolts and stays (A) Bolt Specifications: 5 x 0.8 mm, 3.7 N.m (0.38 kgf m, 2.7 lbf ft
8. Install the audio unit in the reverse order of removal, and note these items Make sure all the connectors and the antenna lead are secure Enter the anti-theft codes for the audio system
9. Give the new anti-theft codes to the client if the audio unit is replaced

SRS components are located in this area Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service

Note. Put on gloves to protect your hands Take care not to scratch the dashboard and related parts Lay a shop towel under the parts when working on them to protect the face panel from scratches or other damage Eject all the discs before removing the audio-navigation unit to prevent damaging the CD/DVD player's load mechanism Discharge static electricity from your body before and during the work

Scheme 192

1. Remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
2. Remove the interface dial (see «HFL-NAVIGATION MICROPHONE REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system) ) Do not touch the terminal connector (A) of the audio-navigation switch panel with your bare hands (If you have touched it, wipe it off thoroughly)
3. Install the audio-navigation switch panel in the reverse order of removal

Note. Put on gloves to protect your hands Take care not to scratch the dashboard and related parts Lay a shop towel under the parts when working on them to protect the face panel from scratches or other damage

Scheme 193

Scheme 194

1. Remove the dashboard center vent (see «DASHBOARD CENTER VENT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#dashboard) )
2. Carefully remove the screws from the audio-HVAC display unit (A)
3. Pull out the audio-HVAC display unit Then disconnect the connector (A) from the audio-HVAC display unit
4. Install the audio-HVAC display unit in the reverse order of removal

Scheme 195

1. Remove the right trunk side trim panel (see «TRIM REMOVAL/INSTALLATION - TRUNK AREA»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-trunk-area) )
2. Loosen the mounting bolts (A), then detach the clip (B) and pull out the stereo amplifier (C) Bolt Specifications: 6 x 1.0 mm, 9.4 N.m (0.95 kgf m, 6.9 lbf ft
3. Disconnect the connectors from the stereo amplifier, and remove it
4. Install the stereo amplifier in the reverse order of removal

With AcuraLink

SRS components are located in this area Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service

Scheme 196

1. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
2. Remove the HandsFreeLink control unit (see «HFL SWITCH TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system) )
3. Remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
4. Remove the bolts (A), and loosen the bolt (B) Bolt Specifications: 6 x 1.0 mm, 9.4 N.m (0.95 kgf m, 6.9 lbf ft
5. Pull the AcuraLink control unit (XM receiver) (C) out, then disconnect the connectors from the AcuraLink control unit (XM receiver), and detach the clips
6. Install the AcuraLink control unit (XM receiver) in the reverse order of removal NOTE: If you replaced the AcuraLink control unit (XM receiver) make sure it has the latest software (see «ACURALINK CONTROL UNIT UPDATE»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#acuralink) )
7. Call XM Satellite Radio to update the client's account with the new XM/HIP serial number Also call Acura Client Services to reactivate the AcuraLink

Without AcuraLink

SRS components are located in this area Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service

Scheme 197

1. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) )
2. Remove the HandsFreeLink control unit (see «HFL SWITCH TEST»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#hands-free-link-system) )
3. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) ) If the vehicle is a Canada model with navigation, remove the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__audio-navigation-unit-removalinstallation) )
4. Remove the bolts (A), and loosen the bolt (B) Bolt Specifications: 6 x 1.0 mm, 9.4 N.m (0.95 kgf m, 6.9 lbf ft
5. Pull the XM receiver (C) out, then disconnect the connectors from the XM receiver, and detach the clips
6. Install the XM receiver in the reverse order of removal

Scheme 198

1. Remove the center console (see «CENTER CONSOLE PANEL DISASSEMBLY/REASSEMBLY»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#consoles__center-console-panel-disassemblyreassembly) )
2. Disconnect the connectors from the USB adapter control unit (A), then remove the screws and USB adapter control unit
3. Install the USB adapter control unit in the reverse order of removal

Scheme 199

1. Remove the front door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exterior-body-panels/#door-system__front-door-panel-removalinstallation) )
2. Remove the bolt Then lift the speaker straight up to release the lower clips (A) NOTE: If you pull the speaker out too far from the door, you will damage the lower clips Bolt Specifications: 5 x 0.8 mm, 4.4 N.m (0.45 kgf m, 3.2 lbf ft
3. Disconnect the 2P connector (B), and remove the speaker
4. Measure the resistance between terminals No 1 and No 2 With navigation, there should be 2 ohms Without navigation, there should be 4 ohms
5. If the resistance is not as specified, replace the door speaker

Scheme 200

Scheme 201

1. With navigation, remove the navigation display unit (see «NAVIGATION DISPLAY UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/navigation-system/#navigation-system__navigation-display-unit-removalinstallation) ) Without navigation, remove the audio-HVAC display unit (see «AUDIO-HVAC DISPLAY UNIT REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/entertainment-systems/#audio-system) )
2. Push out the speaker lid (A) from inside the dashboard, and disconnect the connectors
3. Remove the screws and the front center speaker (A)
4. Measure the resistance between terminals No 1 and No 2 There should be about 2 ohms
5. If the resistance is not as specified, replace the front center speaker

Tweeter

SRS components are located in this area Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service

Scheme 202

Scheme 203

1. Remove the A-pillar trim (see «TRIM REMOVAL/INSTALLATION - PILLAR AREAS»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-pillar-areas) )
2. Release the hooks, and remove the tweeter (A)
3. Check the capacitor (B) condition If any malfunction is found, replace the tweeter
4. Measure the resistance between the tweeter (A) terminal No 2 and the outside terminal of the capacitor There should be about 6 ohms
5. If the resistance is not as specified, replace the tweeter

Scheme 204

1. Remove the rear shelf (see «TRIM REMOVAL/INSTALLATION - REAR SHELF AREA»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-rear-shelf-area) )
2. Remove the mounting bolt, then tilt the speaker forward to release the front clips (A) NOTE: If you pull the speaker out too far from the rear bulkhead, you will damage the lower clips Bolt Specifications: 5 x 0.8 mm, 4.4 N.m (0.45 kgf m, 3.2 lbf ft
3. Disconnect the 2P connector (B), and remove the rear speaker
4. Measure the resistance between the terminals No 1 and No 2 With navigation, there should be 2 ohms Without navigation, there should be 4 ohms
5. If the resistance is not as specified, replace the rear speaker

Scheme 205

1. Remove the rear door panel (see «REAR DOOR PANEL REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exterior-body-panels/#door-system__rear-door-panel-removalinstallation) )
2. Remove the bolts, disconnect the 2P connector (A), and remove the speaker (B) Bolt Specifications: 5 x 0.8 mm, 4.4 N.m (0.45 kgf m, 3.2 lbf ft
3. Measure the resistance between terminals No 1 and No 2 There should be about 2 ohms
4. If the resistance is not as specified, replace the rear door speaker

Scheme 206

1. Remove the rear shelf (see «TRIM REMOVAL/INSTALLATION - REAR SHELF AREA»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-rear-shelf-area) )
2. Remove the four mounting bolts from the subwoofer (A) Bolt Specifications: 6 x 1.0 mm, 9.4 N.m (0.95 kgf m, 6.9 lbf ft
3. Disconnect the 2P connector (B), and remove the subwoofer
4. Measure the resistance between the terminals No 1 and No 2 There should be about 2 ohms
5. If the resistance is not as specified, replace the subwoofer

Scheme 207

1. Remove the audio remote, HFL-navigation voice control switch or the audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/tl/iv-2008-2011/remont/electronic-steering/#power-steering-system) )
2. Measure the resistance between terminals No 11 and No 12 in each switch position according to the table TERMINAL RESISTANCE CHART Position Resistance No button pressed About 10 kohms MODE About 3.7 kohms CH (+) About 1.7 kohms CH (-) About 775 ohms ↑(VOL UP) About 357 ohms ↓(VOL DOWN) About 100 ohms
3. If the resistance is not as specified, replace the switch

AM/FM Antenna Amplifier Replacement

SRS components are located in this area Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service

Scheme 208

1. Remove the C-pillar trim (see «C-PILLAR TRIM»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__c-pillar-trim) )
2. Disconnect the connectors (A) from the AM/FM antenna amplifier (B) and the AM/FM antenna Bolt Specifications: 6 x 1.0 mm, 9.4 N.m (0.95 kgf m, 6.9 lbf ft
3. Remove the bolt and the AM/FM antenna amplifier
4. Install the AM/FM antenna amplifier in the reverse order of removal

AM/FM Antenna Repair

Note. To make an effective repair, the broken section must be no longer than one inch

Scheme 209

Scheme 210

1. Lightly rub the area around the broken section (A) with fine steel wool, then clean it with isopropyl alcohol
2. Carefully mask above and below the broken portion of the window antenna wire (B) with cellophane tape (C)
3. Using a commercially available rear window defogger repair kit, apply a heavy coat of paint (A) extending about 1/8" on both sides of the break Allow 30 minutes to dry
4. Check for continuity in the repaired wire
5. Apply a second coat of paint in the same way Let it dry 3 hours before removing the tape

Scheme 211

1. Pull down the rear portion of the headliner (see «HEADLINER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__headliner-removalinstallation) ) Take care not to damage the headliner
2. Disconnect the XM antenna lead connector (A)
3. Remove the nut (B) from the XM antenna (C)
4. Install the XM antenna in the reverse order of removal

Scheme 212

1. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) )
2. Detach the connector (A) from the clip Remove the cover (B) and disconnect the USB adapter cable connector (C)
3. Carefully pull out the auxiliary jack assembly (D) from the center console box, then disconnect the 5P connector (E) and remove the USB adapter cable connector
4. Install the auxiliary jack assembly in the reverse order of removal

See also:
• NO SOUND WHEN BLUETOOTH AUDIO IS USED (WITH NAVIGATION)
• BLUETOOTH AUDIO DOES NOT WORK (WITH NAVIGATION)
• BLUETOOTH CELL PHONE CANNOT BE PAIRED
• THE COMMUNICATION WITH CELL PHONE IS INTERRUPTED OR CHANGES (WITH NAVIGATION)
• PAIRING INSTRUCTIONS ARE NOT DISPLAYED ON THE SCREEN
• BLUETOOTH PHONE AUDIO FUNCTION SKIP AND PAUSE/RESUME DO NOT WORK (WITH NAVIGATION)
• BLUETOOTH AUDIO DOES NOT WORK (WITHOUT NAVIGATION)
• NAVIGATION SYSTEM
• NAVIGATION THROUGH HFL MENUS
• HANDS FREE LINK SYSTEM
• AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION
• BATTERY TEST
• C-PILLAR TRIM
• REAR WINDOW REPLACEMENT
• DASHBOARD WIRE HARNESS (VIEW OF DRIVER'S SIDE)
• AUDIO WIRE HARNESS
• CENTER CONSOLE PANEL REMOVAL/INSTALLATION
• HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION
• RIGHT SIDE WIRE HARNESS (WITHOUT SH-AWD)
• STEERING WHEEL DISASSEMBLY/REASSEMBLY
• DISPOSAL OF DAMAGED COMPONENTS
• CABLE REEL REPLACEMENT
• HOW TO CHECK ERROR HISTORY
• HFL SYSTEM TROUBLESHOOTING
• ACURALINK CONTROL UNIT UPDATE
• CENTER TRIM REMOVAL/INSTALLATION
• CLIMATE CONTROL UNIT REMOVAL/INSTALLATION
• TRIM REMOVAL/INSTALLATION - TRUNK AREA
• CENTER CONSOLE REMOVAL/INSTALLATION
• CENTER CONSOLE PANEL DISASSEMBLY/REASSEMBLY
• FRONT DOOR PANEL REMOVAL/INSTALLATION
• NAVIGATION DISPLAY UNIT REMOVAL/INSTALLATION
• TRIM REMOVAL/INSTALLATION - PILLAR AREAS
• TRIM REMOVAL/INSTALLATION - REAR SHELF AREA
• REAR DOOR PANEL REMOVAL/INSTALLATION
• HEADLINER REMOVAL/INSTALLATION
• SYMPTOM TROUBLESHOOTING
• AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITH NAVIGATION)
• NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION)
• RADIO PRESET MEMORY IS LOST (WITH NAVIGATION)
• VOLUME DOES NOT CHANGE (WITH NAVIGATION)
• Radio tuner does not change stations (with navigation)
• AUDIO-NAVIGATION SWITCH PANEL BUTTON ILLUMINATION DOES NOT WORK (WITH NAVIGATION)
• AUDIO REMOTE SWITCH DOES NOT WORK PROPERLY (WITH NAVIGATION)
• AUDIO DISC DOES NOT LOAD (WITH NAVIGATION)
• AUDIO DISC DOES NOT EJECT (WITH NAVIGATION)
• AUDIO DISC DOES NOT PLAY (WITH NAVIGATION)
• AUDIO DISC SKIPS (WITH NAVIGATION)
• AUDIO UNIT BUTTON DOES NOT WORK (WITH NAVIGATION)
• AUDIO UNIT DISC INDICATOR DOES NOT WORK (WITH NAVIGATION)
• USB DEVICE DOES NOT FUNCTION (WITH NAVIGATION)
• USB INPUT SOUND IS LOW OR CANNOT BE HEARD (WITH NAVIGATION)
• ERROR CODE: XM NO SIGNAL IS DISPLAYED (WITH NAVIGATION)
• ERROR CODE: XM ANTENNA IS DISPLAYED (WITH ACURALINK)
• XM RADIO DISPLAY IS BLANK AND NO STATION INFORMATION IS DISPLAYED (USA MODELS WITH NAVIGATION)
• XM RADIO PRESET MEMORY IS LOST (USA MODELS WITH NAVIGATION)
• POOR OR NO SOUND WITH XM RADIO (AUDIO UNIT DOES DISPLAY XM CHANNELS) (WITH NAVIGATION)
• POOR AM OR FM RADIO RECEPTION OR INTERFERENCE (WITHOUT NAVIGATION)
• VOLUME DOES NOT CHANGE (WITHOUT NAVIGATION)
• AUDIO SWITCH PANEL BUTTON ILLUMINATION DOES NOT WORK (WITHOUT NAVIGATION)
• AUDIO DISC CHANGER DOES NOT LOAD ALL SIX DISCS (WITHOUT NAVIGATION)
• AUDIO DISC SKIPS (WITHOUT NAVIGATION)
• USB DEVICE DOES NOT FUNCTION (WITHOUT NAVIGATION)
• With AcuraLink
• Without AcuraLink
• SEEK STOP TEST
• RECEPTION LEVEL INDICATION (PUSH AND HOLD 5 SEC AM/FM BUTTON)
• AM/FM ANTENNA AMPLIFIER REPLACEMENT
• AM/FM Antenna Repair
• SPEAKER CHECK MODE
• Audio Disc Does Not Play (Without Navigation)
• SOUND QUALITY DIAGNOSIS
• ERROR CODES
• XM SIGNAL RECEPTION LEVEL INDICATION MODE
• PHASE TEST
• ELECTRICAL NOISE TEST
• SOUND BALANCE TEST
• SOUND JUDGING