Audio System Acura RL II

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Symptom Troubleshooting Index

SYMPTOM TROUBLESHOOTING INDEX

Overview

The audio unit acts as the "processor" for all audio functions. You can select of the audio functions from the front panel, the audio remote (on steering wheel), or by using the navigation voice control system. The audio display provides the current front and rear audio status. For vehicles with the navigation option, additional audio information is available by touching the audio button. (See owner's manual for more details.)

Each audio component passes its audio signal to the audio unit. In addition, it communicates with the audio unit via the GA-Net bus. Any open connection in this circuit will cause audio and navigation functions to appear inoperative.

With the premium sound system, an audio amplifier unit powers the speakers, otherwise the speakers are powered directly by the audio unit.

The system includes an active noise control system to cancel some of the vehicle noise. It use a sine-wave-shaped sound output to cancel low frequency noise. Two microphones detect the low frequency sound, and the system outputs a canceling sound through the audio speakers.

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The 6CD changer output can be directed to the audio unit.

The XM radio plays through the audio unit.

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

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

AUDIO INTERRUPTION FUNCTION

System Diagram

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Note. All items may not apply to this vehicle. See the Owner's Manual for more information.

ITEM DEFINITION CHART

Audio Glossary

ITEM DEFINITION CHART

Audio Unit Connector for Inputs and Outputs

When replacing an audio unit connector, match the wires to the cavities listed in the following tables.

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AUDIO UNIT CONNECTOR A (20P)

WIRE CAVITY CHART

AUDIO UNIT CONNECTOR B (32P)

WIRE CAVITY CHART

AUDIO UNIT CONNECTOR C (14P)

WIRE CAVITY CHART

AUDIO UNIT CONNECTOR D (6P) ('07 model)

WIRE CAVITY CHART

AUDIO UNIT CONNECTOR E (5P)

WIRE CAVITY CHART

Stereo Amplifier Connector for Inputs and Outputs

When replacing a stereo amplifier connector, match the wires to the cavities listed in the following tables.

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STEREO AMPLIFIER CONNECTOR A (26P)

WIRE CAVITY CHART

STEREO AMPLIFIER CONNECTOR B (14P)

WIRE CAVITY CHART

STEREO AMPLIFIER CONNECTOR C (23P)

WIRE CAVITY CHART

AcuraLink Control Unit (XM Receiver) Connector for Inputs and Outputs (With AcuraLink)

When replacing an XM receiver connector, match the wires to the cavities listed in the following tables.

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ACURALINK CONNECTOR A (20P)

WIRE CAVITY CHART

ACURALINK CONNECTOR B (16P)

WIRE CAVITY CHART

ACURALINK CONNECTOR C (2P)

WIRE CAVITY CHART

XM Receiver Connector for Inputs and Outputs (Without AcuraLink USA models)

'07-08 models

When replacing an XM receiver connector, match the wires to the cavities listed in the following tables.

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XM RECEIVER CONNECTOR A (14P)

WIRE CAVITY CHART

XM RECEIVER CONNECTOR B (IP)

WIRE CAVITY CHART

Active Noise Control Unit Connector for Inputs and Outputs

When replacing an active noise control unit connector, match the wires to the cavities listed in the following table.

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WIRE CAVITY CHART

Active Noise Control Microphone Connector for Inputs and Outputs

When replacing an active noise control microphone connector, match the wires to the cavities listed in the following tables.

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CONNECTOR A (2P) (Front)

WIRE CAVITY CHART

CONNECTOR A (2P) (Rear)

WIRE CAVITY CHART

CONNECTOR B (3P)

WIRE CAVITY CHART

Audio-HVAC Subdisplay Unit Connector for Inputs and Outputs

When replacing an audio-HVAC subdisplay unit connector, match the wires to the cavities listed in the following table.

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WIRE CAVITY CHART

Interface Dial Connector for Inputs and Outputs

When replacing an interface dial connector, match the wires to the cavities listed in the following table.

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WIRE CAVITY CHART

Auxiliary Jack Assembly Connector for Inputs and Outputs ('07-08 models)

When replacing an auxiliary jack assembly connector, match the wires to the cavities listed in the following table.

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WIRE CAVITY CHART

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Self-diagnostic Function

The audio system has a self-diagnosis function.

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1. Turn the ignition switch to the ACC (I) or ON (II).
2. Enter the anti-theft code.
3. Push and hold the "No. 1" and "No. 6" buttons and "PWR" knob.
4. The word "DIAG" appears on the subdisplay.

How to exit the self-diagnosis mode

Turn the audio power off or the ignition switch to LOCK (0).

How to Obtain the Audio Unit Serial Number

Note. This procedure can only when the power has been disconnected from the audio unit, and the audio unit displays CODE.

With the audio unit switched off, push and hold the preset buttons No. 1, No. 6 and the PWR knob.

The audio unit will display the letter U with the first four digits of the serial number (example U1234).

The display then changes and displays the letter L and the last four digits of the serial number (example L5678).

Use all eight digits as the serial number when using the interactive network iN to get the 5 digit anti-theft code.

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LCD lighting mode

By pressing the No. 3 button, the entire LCD will turn on to show the presence or absence of a faulty LCD.

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LCD lights-out mode

By pressing the No. 4 button, the entire LCD will turn off to show the presence or absence of a faulty LCD.

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LCD back-up light lighting/lights-out mode

Press the No. 4 button to turn off the entire LCD, then press and hold the "DISC" button for 5 seconds. The LCD backup lights should come on. From this point, press and hold the "DISC" button for 5 seconds again, and the LCD back-up lights should go off.

Climate control system communication check mode

By pressing the No. 5 button, the climate control unit communication line is checked.

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Audio amplifier communication check mode

By pressing the No. 6 button, the audio amplifier communication line is checked.

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Active Noise Control (ANC) system check mode

Active noise control can be turned ON or OFF, and the current status is checked. The active noise control switches ON and OFF with every push of the No. 1 button. It checks for loose wires or poor connections at the active noise control unit connector (16P) in case that "-" is displayed.

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How to check the active noise control system in this check mode

1. With the engine stopped, and while in DIAG mode, turn the ANC ON to OFF by pressing the No. 1 button. A low-frequency hum (50 Hz) should sound for about a minute. If the hum does not sound, check for an open in the wire between the active noise control unit and the audio unit. If the hum does not sound for a minute, check for an open in the wire between active noise control unit and the microphone.
2. Start the engine while the hum is sounding. The hum should stop. If the hum does not stop, check for an open in the wire (NEP line) between the active noise control unit and the PCM.
3. Enter the "DIAG" mode with the engine running (900 RPM), apply the brake pedal and shift to D position, turn the "ANC ON" to "ANC OFF" by pressing the No. 1 button on the audio unit, then turn the "ANC OFF" to "ANC ON". After about 3 seconds, the active noise control system should activate. (NOTE: When any of the doors are opened, the function is stopped.)

Error Codes

The audio system displays error codes when a problem is detected with the CD changer, the audio disc, the XM radio, or the anti-theft code.

CD Error Codes

CD ERROR CODES

XM Error Codes

XM ERROR CODES

Audio Unit Error Codes

AUDIO UNIT ERROR CODES

Poor AM or FM radio reception or interference

Note. Check the vehicle battery condition first. Check the radio reception in an open area. Poor reception/interference can be caused by any of these conditions. The radio station is too far away. Atmospheric conditions are unfavorable. A tall buildings, mountains, or a high-voltage power lines are nearby. Always check the connectors for poor connection or loose terminals. After market window tint.

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1. Turn the ignition switch to ON (II).
2. Do the seek stop test (see «SEEK STOP TEST»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__seek-stop-test) ). 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 if the radio 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).
6. Wrap aluminum foil (A) around the tip of a tester probe (B) as shown.
7. Touch one tester probe to the window near the antenna terminal (A), and move the other tester probe along the antenna wires to check for continuity. Repair if there is no continuity.
8. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ). Check the audio unit connector E (5P) connection. Is it properly connected? YES - Go to step 9. NO - Reconnect the audio unit connector E (5P), and recheck the function.
9. Disconnect the antenna cable 3P connectors from the AM/FM antenna amplifier (see «AM/FM ANTENNA AMPLIFIER REPLACEMENT»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ).
10. Turn the ignition switch to ON (II).
11. Turn on the audio unit and select AM or FM.
12. Measure the voltage between the AM/FM main antenna amplifier connector No. 3 terminal at the AM/FM antenna amplifier lead and body ground. Is there battery voltage? YES - Go to step 13. NO - Replace AM/FM antenna sublead and/or main lead.
13. Turn the ignition switch to LOCK (0).
14. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).
15. Check for continuity between audio unit connector E (5P) No. 5 terminal and the AM/FM main antenna amplifier 3P connector No. 3 terminal. Is there continuity? YES - Go to step 16. NO - Repair open in the wire between the audio unit and the main antenna amplifier.
16. Check for continuity between the audio unit connector E (5P) No. 3 terminal and the AM/FM main antenna amplifier 3P connector No. 1 terminal. Is there continuity? YES - Go to step 17. NO - Replace AM/FM antenna sublead and/or main lead.
17. Check for continuity between the audio unit connector E (5P) No. 3 terminal and body ground. Is there continuity? YES - Replace AM/FM antenna sublead and/or main lead. NO - Go to step 18.
18. Check for continuity between the audio unit connector E (5P) No. 4 terminal and the AM/FM main antenna amplifier 3P connector No. 2 terminal. Is there continuity? YES - Go to step 19. NO - Replace AM/FM antenna sublead and/or main lead.
19. Check for continuity between the audio unit connector E (5P) No. 3 and No. 4 terminals. Is there continuity? YES - Replace AM/FM antenna sublead and/or main lead. NO - Go to step 20.
20. Check for continuity between the audio unit connector E (5P) No. 1 terminal and the AM/FM subantenna amplifier 3P connector No. 1 terminal. Is there continuity? YES - Go to step 21. NO - Replace AM/FM antenna sublead and/or main lead.
21. Check for continuity between the audio unit connector E (5P) No. 1 terminal and body ground. Is there continuity? YES - Replace AM/FM antenna sublead and/or main lead. NO - Go to step 22.
22. Check for continuity between the audio unit connector E (5P) No. 2 terminal and the AM/FM subantenna amplifier 3P connector No. 2 terminal. Is there continuity? YES - Go to step 23. NO - Replace AM/FM antenna sublead and/or main lead.
23. Check for continuity between the audio unit connector E (5P) No. 1 and No. 2 terminals. Is there continuity? YES - Replace AM/FM antenna sublead and/or main lead. NO - Replace the AM/FM antenna amplifier, and recheck. If the reception is still poor, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Power switch will not turn ON (No information display and no sound)

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

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1. Turn the ignition switch to ON (II).
2. With the ignition switch ON (II), push the power switch ON to see if 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).
4. Check the No. 5 (7.5A) fuse and the No. 32 (10A) 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/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ). Check that the audio unit is properly connected. Is it connected properly? YES - Go to step 6. NO - Reconnect the connector, and recheck the function.
6. Disconnect audio unit connector A (20P). NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.
7. Turn the ignition switch to ON (II).
8. Measure the voltage between the No. 2 and No. 10 terminals of audio unit connector A (20P) and body ground. Is there battery voltage? YES - Go to step 9. NO - Repair open in the wire(s) between the No. 5 (7.5A) fuse and the No. 32 (10A) fuse in the driver's under-dash fuse/relay box and the audio unit.
9. Turn the ignition switch to LOCK (0).
10. Reconnect audio unit connector A (20P).
11. Measure the voltage between audio unit connector A (20P) No. 20 terminal and body ground. Is there less than 0.1 V? YES - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ). NO - Repair open in the wire between the audio unit connector A (20P) No. 20 terminal and body ground (G504).

Radio stays powered with the ignition switch OFF

Note. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals. Always check for aftermarket accessories plugged into the vehicle accessory power sockets.

Scheme 61

1. Turn the ignition switch to ON (II).
2. With the ignition switch ON (II), push the power switch OFF or turn the ignition switch to LOCK (0) to see if the audio unit turns OFF. Is the audio unit OFF? YES - Operation is normal. NO - Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ). Disconnect audio unit connector A (20P). NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.
5. Measure the voltage between the No. 2 terminal of audio unit connector A (20P) and body ground. Is there battery voltage? YES - Check for short to power on the PUR wire. NO - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

No sound is heard from speaker(s) (display is normal)

Note. Check the vehicle battery condition first. Set the fader and balance positions to the center. Before performing symptom troubleshooting, do the power switch will not turn ON troubleshooting (see POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) ). Always check the connectors for poor connections or loose terminals.

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1. Turn the ignition switch to ON (II).
2. Turn on the audio unit and check that the volume button is not set the MIN level. Is it at the MIN level? YES - Raise the volume level, and recheck the function. NO - Go to step 3.
3. On the steering wheel, check the navigation talk command and/or HandsFreeLink talk command functions. Are the navigation talk command and/or the HFL talk command functions set? YES - Cancel the navigation talk command by pressing the navigation BACK button, and for the HFL talk command, press the HFL BACK button, then recheck the function. NO - Go to step 4.
4. Check to see if there is a specific speaker(s) that has no sound. Is there a specific one? YES - Go to step 5. NO - Go to step 8.
5. Turn the ignition switch to LOCK (0).
6. Check the speaker(s) that has no sound for any damage. Is there any damage? YES - Replace the speaker(s) and recheck. NO - Go to step 7.
7. Remove the speaker(s) that has no sound (see «SPEAKER REPLACEMENT»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ), and disconnect its connector.
8. Check the speaker 2P connector for a loose or poor connection. Reconnect the speaker 2P connector, and recheck the symptom; does it still appear? YES - Go to step 9. NO - Operation is normal.
9. Measure the resistance between the No. 1 and No. 2 terminals of the speaker connector. Is there about 4 ohms? YES - Go to step 10. NO - Faulty speaker(s).
10. Disconnect stereo amplifier connectors A (26P), B (14P), and C (23P). NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.
11. Measure the voltage between stereo amplifier connector B (14P) No. 4 terminal and body ground. Is there battery voltage? YES - Go to step 12. NO - Repair open in the wire between fuse No. 2 (30A) in the passenger's under-dash fuse/relay box and stereo amplifier connector B (14P) No. 4 terminal.
12. Turn the ignition switch to ON (II).
13. Measure the voltage between stereo amplifier connector C (23P) No. 19 terminal and body ground. Is there battery voltage? YES - Go to step 14. NO - Repair open in the wire between the stereo amplifier connector C (23P) No. 19 terminal and audio unit connector A (20P) No. 1 terminal.
14. Reconnect stereo amplifier connectors A (20P), B(14P), and C (23P).
15. Check for continuity between stereo amplifier connector B (14P) No. 3 terminal and body ground. Is there continuity? YES - Go to step 16. NO - Repair open in the wire between stereo amplifier connector B (14P) No. 3 terminal and body ground (G652).
16. Disconnect stereo amplifier connectors B (14P), and C (23P).
17. Measure the resistance of stereo amplifier connectors B (14P) and C (23P) according to the table. SPEAKER TERMINAL SPECIFICATIONS Speaker Terminal Wire color Driver's door speaker. Left front tweeter C23 (+) LT BLU C10 (-) LT GRN Passenger's door speaker, Right front tweeter B6 (+) LT GRN B1 (-) GRY Front center speaker C22 (+) BLU C9 (-) PNK Right rear speaker B8 (+) BLU B9 (-) ORN Right rear twiddler B12 (+) GRY B13 (-) BLU Subwoofer B5 (+) BRN B14 (-) GRN Left rear twiddler B10 (+) PUR B11 (-) LT BLU Left rear speaker B7 (+) GRY B2 (-) BRN Is there more than 4 ohms? YES - Go to step 18. NO - Repair open in the wire between the stereo amplifier and the speaker.
18. Disconnect the speaker 2P connector.
19. Check for continuity between the stereo amplifier connector B (14P) and C (23P) terminals and body ground according to the table. SPEAKER TERMINAL SPECIFICATIONS Speaker Terminal Wire color Driver's door speaker, Left front tweeter C23 (+) LT BLU C10 (-) LT GRN Front passenger's door speaker, Right front tweeter B6 (+) LT GRN B1 (-) GRY Left rear speaker B7 (+) GRN B2 (-) BRN Right rear speaker B8 (+) BLU B9 (-) ORN Left rear twiddler speaker B10 (+) PUR B11 (-) LT BLU Right rear twiddler speaker B12 (+) GRY B13 (-) BLU Front center speaker C22 (+) BLU C9 (-) PNK Subwoofer B5 (+) BRN B14 (-) GRN Is there continuity? YES - Go to step 20. NO - Repair short in the wire between the stereo amplifier and the appropriate speaker.
20. Reconnect the 2P connector(s) to the speaker(s).
21. Disconnect audio unit connector A (20P) and audio unit connector B (32P). NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.
22. Disconnect amplifier connector A (26P).
23. Check for continuity between audio unit connector A (20P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and the audio unit connector A (20P) No. 14 terminal (the harness shield). AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector Wire color A6 PUR A16 YEL A5 BLU A15 ORN A8 WHT A18 RED A7 GRN A17 BLK Is there continuity? YES - Repair short in the wire between the audio unit and the stereo amplifier or a short between the shield wires (replace the appropriate shielded harness). NO - Go to step 24.
24. Check for continuity between audio unit connector B (32P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and the audio unit connector B (32P) No. 19 terminal (the harness shield). AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector Wire color B1 BRN B17 LT GRN B2 PNK B18 LT BLU Is there continuity? YES - Repair short in the wire between the audio unit and the stereo amplifier or a short between the shield wires (replace the appropriate shielded harness). NO - Go to step 25.
25. Check for continuity between audio unit connector B (32P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and the audio unit connector B (32P) No. 3 terminal (the harness shield). AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector Wire color B4 GRN B20 RED Is there continuity? YES - Repair short in the wire between the audio unit and the stereo amplifier or a short between the shield wires (replace the appropriate shielded harness). NO - Go to step 26.
26. Check for continuity between audio unit connectors A (20P) and B (32P) and stereo amplifier connector A (26P) according to the table ( see scheme 47and (Scheme 69) ). AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector Amplifier connector Wire color A5 A5 BLU A6 A19 PUR A7 A12 GRN A8 A25 WHT A15 A6 ORN A16 A20 YEL A17 A13 BLK A18 A26 RED B1 A21 BRN B2 A7 PNK B4 A10 GRN B17 A22 LT GRN B18 A8 LT BLU B20 A11 RED Is there continuity? YES - Substitute a known-good audio unit and recheck. If the symptom/indication goes away, replace the original audio unit. If symptom is still present, substitute a known-good stereo amplifier and recheck. If the symptom/indication goes away, replace the original stereo amplifier. NO - Repair open in the appropriate wire between the audio unit and stereo amplifier.

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

Note. Check the vehicle battery condition first. 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. Always check the connector 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. Turn the ignition switch to ON (II).
2. Turn on the audio unit and select XM radio.
3. Check for an error message on the display. Are there any messages displayed? YES - Go to «ERROR CODE»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__error-codes) list (see ). NO - With AcuraLink: Go to step 4. Without AcuraLink: Go to step 7 .
4. Disconnect audio unit connector C (14P) and AcuraLink control unit (XM receiver) connector A (20P).
5. Check for continuity between AcuraLink control unit (XM receiver) 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) No. 4 terminal (the harness shield). AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector Wire color C6 WHT C14 RED C5 GRN C13 BLK Is there continuity? YES - Repair short in the wire between the audio unit and the AcuraLink control unit (XM receiver) or short between the shield wire (replace the appropriate shielded harness). NO - Go to step 6.
6. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) and audio unit connector C (14P) according to the table. AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector AcuraLink control unit (XM receiver) connector Wire color C6 A9 WHT C14 A19 RED C5 A10 GRN C13 A20 BLK Is there continuity? YES - Substitute a known-good AcuraLink control unit (XM receiver), then reconnect all connectors and recheck. If the symptom/indication goes away, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__acuralink-control-unit-xm-receiver-removalinstallation) ). If symptom/indication is still present, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ). NO - Repair open in the wire between audio unit and AcuraLink control unit (XM receiver).
7. Disconnect audio unit connector C (14P) and the XM receiver connector A (14P).
8. Check for continuity between XM receiver 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) No. 4 terminal (the harness shield). AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector Wire color C6 WHT C14 RED C5 GRN C13 BLK Is there continuity? YES - Repair short in the wire between the audio unit and the XM receiver or short between the shield wire (replace the appropriate shielded harness). NO - Go to step 9.
9. Check for continuity between XM receiver connector A (14P) and audio unit connector C (14P) according to the table. AUDIO UNIT CONNECTOR SPECIFICATIONS Audio unit connector XM receiver connector Wire color C6 A6 WHT C14 A14 RED C5 A5 GRN C13 A13 BLK Is there continuity? YES - Substitute a known-good XM receiver, 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/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ). NO - Repair open in the wire between audio unit and XM receiver.

XM radio display is blank and no station information is displayed (with AcuraLink)

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

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1. Turn the ignition switch to LOCK (0).
2. Disconnect AcuraLink control unit (XM receiver) connector A (20P).
3. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 1 terminal and body ground. Is there battery voltage? YES - Go to step 4. NO - Repair open in the wire between fuse No. 5 (7.5A) in the driver's under-dash fuse/relay box and XM receiver connector A (20P) No. 1 terminal.
4. Turn the ignition switch to ON (II).
5. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 2 terminal and body ground. Is there battery voltage? YES - Go to step 6. NO - Repair open in the wire between fuse No. 32 (10A) in the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) No. 2 terminal.
6. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 12 terminal and body ground. Is there battery voltage? YES - Go to step 7. NO - Repair open in the wire between fuse No. 21 (10A) in the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) No. 12 terminal.
7. Reconnect the AcuraLink control unit (XM receiver) connector A (20P).
8. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 11 terminal and body ground. Is there less than 0.1 V? YES - Go to step 9. NO - Repair open in the wire between AcuraLink control unit (XM receiver) connector A (20P) No. 11 terminal and body ground (G602).
9. Disconnect audio unit connector C(14P), AcuraLink control unit (XM receiver) connector A (20P), navigation unit connector A (20P), and display panel control unit connector (20P).
10. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and the AcuraLink control unit (XM receiver) connector A (20P) No. 18 terminal (the harness shield). ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR SPECIFICATIONS AcuraLink control unit (XM receiver) connector Wire color A7 GRN A17 RED Is there continuity? YES - Repair short in the appropriate wire between the audio unit and the AcuraLink control unit (XM receiver) or replace the appropriate shielded harness. NO - Go to step 11.
11. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) and audio unit connector C (14P) according to the table. ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR SPECIFICATIONS AcuraLink control unit {XM receiver) connector Audio unit connector Wire color A7 C9 GRN A17 C10 RED Is there continuity? YES - Go to step 12. NO - Repair open in the appropriate wire between the audio unit and the AcuraLink control unit (XM receiver).
12. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector A (20P) according to the table. ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR SPECIFICATIONS AcuraLink control unit (XM receiver) connector Navigation unit connector Wire color A7 A10 GRN A17 A20 RED Is there continuity? YES - Go to step 13. NO - Repair open in the appropriate wire between the navigation unit and the AcuraLink control unit (XM receiver).
13. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) and the display panel control unit (20P) connector according to the table. ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR SPECIFICATIONS AcuraLink control unit (XM receiver) connector Display panel control unit connector Wire color A7 5 GRN A17 15 RED Is there continuity? YES - Substitute a known-good AcuraLink control unit (XM receiver), then reconnect all of the connectors and recheck. If the symptom/indicated goes away, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__acuralink-control-unit-xm-receiver-removalinstallation) ). If the symptom/indicated is still present replace the audio unit. NO - Repair open in the appropriate wire between the display panel control unit and the AcuraLink control unit (XM receiver).

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

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

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1. Turn the ignition switch to LOCK (0).
2. Disconnect XM receiver connector A (14P).
3. Measure the voltage between XM receiver connector A (14P) No. 1 terminal and body ground. Is there battery voltage? YES - Go to step 4. NO - Repair open in the wire between fuse No. 5 (7.5A) in the driver's under-dash fuse/relay box and XM receiver connector A (14P) No. 1 terminal.
4. Turn the ignition switch to ON (II).
5. Measure the voltage between XM receiver connector A (14P) No. 2 terminal and body ground. Is there battery voltage? YES - Go to step 6. NO - Repair open in the wire between audio unit connector C (14P) No. 2 terminal and XM receiver connector A (14P) No. 2 terminal.
6. Reconnect XM receiver connector A (14P).
7. Measure the voltage between XM receiver connector A (14P) No. 11 terminal and body ground. Is there less than 0.1 V? YES - Go to step 8. NO - Repair open in the wire between XM receiver connector A (14P) No. 11 terminal and body ground (G602).
8. Turn the ignition switch to LOCK (0).
9. Disconnect audio unit connector C (14P), XM receiver connector A (14P), navigation unit connector A (20P), and the display panel control unit connector (20P).
10. Check for continuity between XM receiver connector A (14P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and the XM receiver connector A (20P) No. 18 terminal (the harness shield). XM RECEIVER CONNECTOR SPECIFICATIONS XM receiver connector Wire color A9 GRN A10 RED Is there continuity? YES - Repair short in the appropriate wire between the audio unit and the XM receiver or replace the appropriate shielded harness. NO - Go to step 11.
11. Check for continuity between XM receiver connector A (14P) and audio unit connector C (14P) according to the table. XM RECEIVER CONNECTOR SPECIFICATIONS XM receiver connector Audio unit connector Wire color A9 C9 GRN A10 C10 RED Is there continuity? YES - Go to step 12. NO - Repair open in the appropriate wire between the audio unit and the XM receiver.
12. Check for continuity between XM receiver connector A (14P) and navigation unit connector A (20P) according to the table. XM RECEIVER CONNECTOR SPECIFICATIONS XM receiver connector Navigation unit connector Wire color A9 A10 GRN A10 A20 RED Is there continuity? YES - Go to step 13. NO - Repair open in the appropriate wire between navigation unit arid the XM receiver.
13. Check for continuity between XM receiver connector A (14P) and the display panel control unit (20P) connector according to the table. XM RECEIVER CONNECTOR SPECIFICATIONS XM receiver connector Display panel control unit connector Wire color A9 5 GRN A10 15 RED Is there continuity? YES - Substitute a known-good XM receiver, then reconnect all of the connectors and recheck. If the symptom/indicated goes away, replace the original XM receiver. If the symptom/indicated is still present replace the audio unit. NO - Repair open in the appropriate wire between the display panel control unit and the XM receiver.

Note. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
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 sound quality is poor only with the XM radio, or the XM radio does not function, go to «POOR OR NO SOUND WITH THE XM RADIO»(/acura/rl/ii-2004-2008/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 RADIO RECEPTION OR INTERFERENCE»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__poor-am-or-fm-radio-reception) . If the sound is poor in all modes, go to «SOUND QUALITY DIAGNOSIS»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) .

XM radio preset memory is lost (with AcuraLink)

Note. Check the vehicle battery condition first. Always 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 unit is set to channel mode (see owners manual), if it is set to channel mode, call XM Satellite Radio customer support and check the account activation status.

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1. Turn the ignition switch to ON (II).
2. Turn on the audio unit 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 7 .
3. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).
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 unit. NO - Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Disconnect AcuraLink control unit (XM receiver) connector A (20P)
7. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 1 terminal and body ground. Is there battery voltage? YES - Go to step 8. NO - Repair open in the wire between the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) No. 1 terminal.
8. Turn the ignition switch to ON (II).
9. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 2, and No. 12 terminals and body ground individually. Is there battery voltage? YES - Go to step 10. NO - Repair open in the wire between the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) No. 2 and No. 12 terminals.
10. Reconnect AcuraLink control unit (XM receiver) connector A (20P).
11. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 11 terminal and body ground. Is there less than 0.1 V? YES - Replace the AcuraLink control unit (XM receiver). NO - Repair open in the wire between audio unit connector A (20P) No. 11 terminal and body ground (G602).

XM radio preset memory is lost (without AcuraLink)

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

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1. Turn the ignition switch to ON (II).
2. Turn on the audio unit 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 7 .
3. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).
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 unit. NO - Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Disconnect XM receiver connector A (14P)
7. Measure the voltage between XM receiver connector A (14P) No. 1 terminal and body ground. Is there battery voltage? YES - Go to step 8. NO - Repair open in the wire between the driver's under-dash fuse/relay box and XM receiver connector A (14P) No. 1 terminal.
8. Turn the ignition switch to ON (II).
9. Measure the voltage between XM receiver connector A (14P) No. 2 terminal and body ground individually. Is there battery voltage? YES - Go to step 10. NO - Repair open in the wire between the driver's under-dash fuse/relay box and XM receiver connector A (14P) No. 2 terminal.
10. Reconnect XM receiver connector A (14P).
11. Measure the voltage between XM receiver connector A (14P) No. 11 terminal and body ground. Is there less than 0.1 V? YES - Replace the XM receiver. NO - Repair open in the wire between audio unit connector A (14P) No. 11 terminal and body ground (G602).

Audio disc does not eject

Note. Disc labels should not be used in the audio unit. They may damage the player mechanism. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
2. Turn on the audio system. Does the system turn on? YES - Go to step 3. NO - Go to «POWER SWITCH WILL NOT TURN ON»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__power-switch-will-not-turn-on) .
3. Check to see if the disc ejects correctly with no binding by pushing the EJECT button. Does the disc eject properly? YES - Operation is normal. NO - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Radio preset memory is lost

Note. Check the vehicle battery condition first. Always check the connectors for poor connections or loose terminals. If only XM stations are lost, go to XM RADIO PRESET MEMORY IS LOST .

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1. Turn the ignition switch to ON (II).
2. Turn on the audio unit and set each of the radio station preset buttons. Does each button set properly? YES - Go to step 4 . NO - Go to step 3.
3. Measure the voltage between audio unit connector A (20P) No. 10 terminal and body ground. Is there battery voltage? YES - Go to step 4. NO - Repair open in the wire between the No. 5 (7.5A) fuse and driver's under-dash fuse/relay box and audio unit connector A (20P) No. 10 terminal.
4. Reconnect audio unit connector A (20P).
5. Measure the voltage between audio unit connector A (20P) No. 20 terminal and body ground. Is there less than 0.1 V? YES - Go to step 6. NO - Repair open in the wire between audio unit connector A (20P) No. 20 terminal and body ground (G504).
6. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).
7. 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 - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Audio unit button illumination does not work

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

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1. Turn the ignition switch to ON (II).
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 (20P). 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. 7 (7.5A) 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).
6. Disconnect audio unit connector A (20P). NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.
7. Disconnect gauge control module connector A (20P).
8. Check for continuity between audio unit connector A (20P) No. 19 terminal and gauge control module connector A (20P) No. 1 terminal. 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).
10. With the headlight switch still on, measure the voltage between audio unit connector A (20P) No. 9 terminal and body ground. Is there battery voltage? YES - Check the connections at audio unit connector A (20P). If all connections are OK, replace the audio unit. NO - Repair open in the wire between the passenger's under-dash fuse/relay box and the audio unit.

Audio disc changer does not load all six discs

Note. Disc labels should not be used in the audio unit. They may damage the player mechanism. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
2. Turn on the audio unit and try loading six discs into the audio unit. 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/CD changer accept all six discs? YES - At least one of the original discs is faulty. NO - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Audio disc changer does not move between discs

Note. Disc labels should not be used in the audio unit. They may damage the player mechanism. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
2. Turn on the audio unit and insert six discs into the audio unit/CD 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 - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Volume does not change

Note. Set the fader and balance positions to the center. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
2. Turn on the audio unit and check for sound in each mode (AM, FM, XM, and disc). Is the sound normal? YES - Go to step 3. NO - Go to «AUDIO SYSTEM SOUND IS WEAK OR DISTORTED»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) , or «NO SOUND IS HEARD FROM SPEAKER(S)»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-speakers) .
3. Operate the volume knob to see if the volume changes. Does the volume change? YES - Operation is normal. NO - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Radio tuner does not change stations

Note. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
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»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__power-switch-will-not-turn-on) .
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 - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Audio disc does not load

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

1. Turn the ignition switch to ON (II).
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 «DISC DOES NOT PLAY»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-disc-does-not-play) . NO - Go to step 3.
3. Insert another disc. Does the disc load? YES - The original disc is faulty. NO - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Special tools required

Diagnostics CD 07AAZ-SDBA100

Audio disc does not play

Note. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
2. Turn on the audio unit and try loading a disc. Does the disc load? YES - Go to step 3. NO - Go to «DISC DOES NOT LOAD»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-disc-does-not-load) .
3. Insert another 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 - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Special tools required

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

Audio disc skips

Note. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II).
2. Confirm the vehicles tires are properly inflated.
3. Check the client's disc for scratches and fingerprints. NOTE: The following test should be done with the audio unit bass and treble set to the client's listening settings. When comparing to known-good vehicles, the comparison should be done on the same model and trim level
4. Test-drive the vehicle to identify when the client's CD 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 5. NO - Operation is normal.
5. Compare the client's disc that is 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 6. NOTE: The following test should be done with vehicle parked and the engine running.
6. Insert the diagnostic skip test disc (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 same track(s) as the known-good vehicle? YES - Operation is normal. NO - Go to step 7.
7. Insert the diagnostic skip test disc (T/N 07AAZ-SDBA200). Play tracks 7-11 and tracks 13-15 and note on which track number(s) where the disc starts skipping. Do the same test on a known-good vehicle. Does the disc skip on same track number (s) as the known-good vehicle? YES - Operation is normal. NO - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Audio remote switch does not work properly

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

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1. Test the audio remote switch (see «AUDIO REMOTE SWITCH TEST»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ). Is the audio remote switch OK ? YES - Intermittent failure, the audio remote switch and audio unit are OK at this time. NO - Go to step 2.
2. Turn the ignition switch to ON (II).
3. Turn on the audio unit and check the audio unit operation (volume up, volume down, CH (UP), CH (DOWN), MODE). Is the audio unit operation OK? YES - Operation is normal. NO - Go to step 4.
4. Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).
5. Disconnect the audio unit connector A (20P). NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.
6. Reconnect the audio remote switch, and measure the resistance between audio unit connector A (20P) No. 3 and No. 11 terminals as specified in the table. AUDIO REMOTE SWITCH TABLE AUDIO REMOTE SWITCH CHART Button held down VOL DOWN VOL UP CH(-) CH(+) MODE (NONE) Resistance about 100 ohms about 357 ohms about 775 ohms about 1.7 kohms about 3.7 kohms 10 kohms Is the resistance OK? YES - Go to step 7. NO - Repair open 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 «CABLE REEL REPLACEMENT»(/acura/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system) ).
7. Check for continuity between body ground and the No. 3 and No. 11 terminals of audio unit connector A(20P) individually. Is there continuity? YES - Repair the 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/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system) ). NO - Replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).

Error code: XM NO SIGNAL is displayed

Note. Check the vehicle battery condition first. Always check the connectors for poor connection or loose terminals. Check XM radio reception in an open area with good exposure to the southern horizon. Poor reception/interference can be caused by tall buildings, mountains, or high-voltage power lines.

[ ] : without AcuraLink

1. Park vehicle outside with a clear view of the southern horizon. Does the XM radio receive a signal? YES - Reception interference operation is normal. NO - Go to step 2.
2. Check the XM antenna connector C(2P) [or B UP)] at AcuraLink control unit (XM receiver) [or XM receiver] and terrestrial and satellite antenna module. Is the XM antenna connector C (2P) [or B(1P)] connected? YES - Go to step 3. NO - Reconnect the XM antenna receiver connector, recheck XM radio operation. If the signal is restored, the system is OK. If signal not restored go to step 3.
3. Substitute a known-good XM antenna. Does the XM radio receive a signal? YES - Replace XM antenna. NO - Substitute a known-good XM antenna lead. If the XM radio receives a normal signal, replace original XM antenna lead.

Error code: XM ANTENNA is displayed

Note. Check the vehicle battery condition first. Always 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.

[] : without AcuraLink

1. Check the connector at the AcuraLink control unit (XM receiver) [or 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 connector at the XM terrestrial and satellite antenna module (GPS antenna). 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 3.
3. Check the pin locations in the AcuraLink control unit (XM receiver) [or XM receiver] connector and the XM antenna module connectors. Are the pins in the correct locations? YES - Go to step 4. NO - Correct the pin locations. If the error message does not go away, go to step 4.
4. Substitute a known-good XM terrestrial and satellite antenna module. Is the error message gone? YES - Replace the XM terrestrial and satellite antenna module. NO - Go to step 5.
5. Substitute a known-good AcuraLink control unit (XM receiver) [or XM receiver]. Is the error message gone? YES - Update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__acuralink-control-unit-xm-receiver-removalinstallation) ) [or XM receiver]. NO - Replace the XM antenna lead.

Booming sound while driving with audio unit on or off

Note. Always check the connectors for poor connections or loose terminals.

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1. Turn the ignition switch to ON (II).
2. Operate the audio unit, and check the function of the speakers. Is a booming sound heard from the speakers? YES - Go to step 3. NO - Go to no sound is heard from speaker(s) (see «NO SOUND IS HEARD FROM SPEAKER(S) (DISPLAY IS NORMAL)»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-speakers) ).
3. Open the driver's door, with the booming sound present. Is the booming sound still present? YES - Perform the electrical noise test (see «ELECTRICAL NOISE TEST»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__electrical-noise-test) ). NO - Go to step 4.
4. Turn the audio power switch to LOCK (0).
5. Perform the self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__self-diagnostic-function) ).
6. Press the "No. 1" button. Is the low-frequency hum sound heard? YES - Go to step 7. NO - Go to step 29 .
7. Check that the low-frequency hum sound continues sounding for about 1 minute. Does the low-frequency hum sound continue sounding for about 1 minute? YES - Go to step 51 . NO - Go to step 8.
8. Check for the No. 32 (10A) and the No. 5 (7.5A) ('06-07 models) fuses in the driver's under-dash fuse/relay box. Is the fuse OK? YES - Go to step 9. NO - Replace the fuse, and recheck.
9. Turn the ignition switch to LOCK (0).
10. Disconnect active noise control front microphone connector B (3P) and active noise control rear microphone connector B (3P).
11. Turn the ignition switch ON (II).
12. Measure the voltage between active noise control front and rear microphone connector B (3P) No. 3 terminal and body ground. Is there battery voltage? YES - Go to step 13. NO - Repair open in the wire between the No. 32 (10A) fuse in the driver's under-dash fuse/relay box and active noise control front or rear microphone connector B (3P).
13. Reconnect active noise control front microphone connector B (3P) and active noise control rear microphone connector B (3P).
14. Measure the voltage between active noise control front and rear microphone connector B (3P) No. 1 terminal and body ground. Is there less than 0.1 V? YES - Go to step 15. NO - Repair open in the wire between active noise control front or rear microphone connector B (3P) No. 1 terminal and body ground (G652).
15. Turn the ignition switch to LOCK (0).
16. Disconnect active noise control front microphone connector A (2P) and active noise control rear microphone connector A (2P), active noise control unit connector (16P), and stereo amplifier connector C (23P).
17. Check for continuity between body ground and active noise control front and rear microphone connector A (2P) No. 1 and No. 2 terminals individually. Is there continuity? YES - Repair short in the wire between body ground and active noise control front or rear microphone connector A (2P) No. 1 and No. 2 terminals. NO - Go to step 18.
18. Reconnect the active noise control front and rear microphone control unit, and stereo amplifier connectors.
19. Turn the ignition switch to ON (II).
20. Measure the voltage between the body ground and active noise control front or rear microphone connector A (2P) No. 1 and No. 2 terminals individually while lightly tapping the microphones. Does the voltage fluctuate when you tap on the microphones? YES - Go to step 21. NO - Replace the active noise control front or rear microphone.
21. Turn the ignition switch to LOCK (0).
22. Disconnect the active noise control unit 16P connector.
23. Disconnect active noise control front microphone connector A (3P).
24. Check for continuity between the active noise control unit 16P connector No. 3 terminal and active noise control front microphone connector A (2P) No. 2 terminal. Is there continuity? YES - Go to step 25. NO - Repair open in the wire between the active noise control unit 16P connector No. 3 terminal and active noise control front microphone connector A (2P) No. 2 terminal.
25. Check for continuity between the active noise control unit 16P connector No. 11 terminal and active noise control front microphone connector A (2P) No. 1 terminal. Is there continuity? YES - Go to step 26. NO - Repair open in the wire between the active noise control unit 16P connector No. 11 terminal and active noise control front microphone connector A (2P) No. 1 terminal.
26. Disconnect active noise control rear microphone connector A (2P) and stereo amplifier connector C (23P).
27. Check for continuity between the active noise control unit 16P connector No. 4 terminal and active noise control rear microphone connector A (2P) No. 2 terminal. Is there continuity? YES - Go to step 28. NO - Repair open in the wire between the active noise control unit 16P connector No. 4 terminal and active noise control front microphone connector A (2P) No. 2 terminal.
28. Check for continuity between the active noise control unit 16P connector No. 5 terminal and active noise control rear microphone connector A (2P) No. 1 terminal. Is there continuity? YES - Replace the active noise control unit (see «ACTIVE NOISE CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ). NO - Repair open in the wire between the active noise control unit 16P connector No. 5 terminal and active noise control rear microphone connector A (2P) No. 1 terminal.
29. Check for the No. 32 (10A) and the No. 5 (7.5A) ('06-07 models) fuses in the driver's under-dash fuse/relay box. Are the fuses OK? YES - Go to step 30. NO - Replace the fuse, and recheck.
30. Disconnect the active noise control unit 16P connector.
31. Measure the voltage between the active noise control unit 16P connector No. 8 terminal and body ground. Is there battery voltage? YES - Go to step 32. NO - Repair open in the wire between the No. 32 (10A) fuse ('05 model) or No. 5 (7.5A) fuse ('06-08 models) in the driver's under-dash fuse/relay box and the active noise control unit 16P connector No. 8 terminal.
32. Reconnect the active noise control unit (16P) connector.
33. Turn the ignition switch ON (II).
34. Measure the voltage between the active noise control unit 16P connector No. 7 terminal and body ground. Is there less than 0.1V? YES - Go to step 35. NO - Repair open in the wire between the active noise control unit 16P connector No. 7 terminal and body ground (G652).
35. Reconnect the active noise control unit 16P connector.
36. Perform the self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__self-diagnostic-function) ).
37. Press the "No. 1" button.
38. Measure the voltage between the active noise control unit 16P connector No. 12 terminal and body ground. Is there about 5 V? YES - Go to step 44 . NO - Go to step 39.
39. Turn the ignition switch to LOCK (0).
40. Disconnect the active noise control unit 16P connector and stereo amplifier connector A (26P).
41. Check for continuity between the active noise control unit 16P connector No. 12 terminal and stereo amplifier connector A (26P) No. 18 terminal. Is there continuity? YES - Go to step 42. NO - Repair open in the wire between the active noise control unit 16P connector No. 12 terminal and stereo amplifier connector A (26P) No. 18 terminal.
42. Check for continuity between body ground and the active noise control unit 16P connector No. 12 terminal. Is there continuity? YES - Repair short in the wire between the active noise control unit 16P connector No. 12 terminal and stereo amplifier connector A (26P) No. 18 terminal. NO - Replace the stereo amplifier (see «STEREO AMPLIFIER REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ).
43. Reconnect the active noise control unit (16P) connector.
44. Do the self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__self-diagnostic-function) ).
45. Press and release the "No. 1" button.
46. Measure the voltage between the active noise control unit 16P connector No. 2 terminal and body ground. Is there about 2.5 V? YES - Replace the stereo amplifier (see «STEREO AMPLIFIER REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ). NO - Go to step 47.
47. Turn the ignition switch to LOCK (0).
48. Disconnect the active noise control unit 16P connector and stereo amplifier connector C (23P).
49. Check for continuity between the active noise control unit 16P connector and stereo amplifier connector C (23P). 16P: No. 1 No. 2 No. 9 No. 10 23P: No. 16 No. 14 No. 17 No. 15 Is there continuity? YES - Go to step 50. NO - Repair open in the wire(s) between the active noise control unit 16P connector and stereo amplifier connector C (14P).
50. Check for continuity between body ground and active noise control unit 16P connector No. 1, 2,9, and 10 terminals individually. Is there continuity? YES - Repair short in the wire(s) between the active noise control unit 16P connector and stereo amplifier connector C (14P). NO - Replace the active noise control unit (see «ACTIVE NOISE CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ).
51. Start the engine, and let the vehicle idle.
52. Perform the self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__self-diagnostic-function) ).
53. Press the No. 1 button. Can you hear the low-frequency hum ? YES - Go to step 54. NO - The system is OK.
54. Turn the ignition switch to LOCK (0).
55. Disconnect the active noise control unit 16P connector and PCM connector A (31P).
56. Check for continuity between the active noise control unit 16P connector No. 15 terminal and PCM connector A (31P) No. 23 terminal. Is there continuity? YES - Go to step 57. NO - Repair open in the wire between the active noise control unit 16P connector No. 15 terminal and PCM connector A (31P) No. 23 terminal.
57. Check for continuity between the active noise control unit 16P connector No. 15 terminal and body ground. Is there continuity? YES - Repair short in the wire between body ground and the active noise control unit 16P connector No. 15 terminal and PCM connector A (31P) No. 23 terminal. NO - Replace the PCM.

Sound Quality Diagnosis

Special tools required

Diagnostics 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/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__phase-test) . If the channel ID is not correct, check for Shorted speaker wire Faulty amplifier Faulty audio unit

Special tools required

Diagnostics 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.

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 base" when it is out of phase. If the voice changes from in-phase to out of phase as indicated by the prompt, the phasing is correct. Go to «ELECTRICAL NOISE TEST»(/acura/rl/ii-2004-2008/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

Special tools required

Diagnostics CD 07AAZ-SDBA100

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»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__individual-speaker-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.

Special tools required

Diagnostics CD 07AAZ-SDBA100

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»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__sound-balance-test) . If the sound quality is OK, go to the «SOUND BALANCE TEST»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__sound-balance-test) .

Special tools required

Diagnostics CD 07AAZ-SDBA100

Sound Balance Test

Perform 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.

Special Tools Required

Diagnostics CD 07AAZ-SDBA100

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»(/acura/rl/ii-2004-2008/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.

Special tools required

Diagnostics CD 07AAZ-SDBA100

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 to 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 speaker(s) (display is normal) (see NO SOUND IS HEARD FROM SPEAKER(S) (DISPLAY IS NORMAL) ) 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. 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).
11. Start the engine in the known-good vehicle, and then perform 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 radio reception or interference (see «POOR AM OR FM RADIO RECEPTION OR INTERFERENCE»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system__poor-am-or-fm-radio-reception) ).

Audio Unit Removal/Installation

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 workshop towel under the parts when working on them to protect the face panel from scratches or other damage. Eject all the CDs 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), and enter them into the new audio unit.

Scheme 118

Scheme 119

1. Make sure you have the anti-theft codes for the audio system and the navigation system (if equipped).
2. Remove the center console trim (see «CENTER TRIM REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard__center-trim-removalinstallation) ).
3. Remove the self tapping screws, then pull out the audio unit (A).
4. Disconnect the connectors (B), then remove the audio unit.
5. Remove the climate control unit (see «CLIMATE CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/automatic-hvac-system/#hvac) ).
6. Remove the interface dial (see «NAVIGATION DISPLAY UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/navigation-system/#navigation-system) ).
7. Remove the screws and the audio unit (A) from the audio panel (B).
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 and the navigation system, and set the clock (on vehicles without navigation). If necessary, enter the navigation system code.

Audio-HVAC Subdisplay Unit Removal/Installation

Note. Put on gloves to protect your hands. Take care not to scratch the dashboard.

Scheme 120

Scheme 121

1. Remove the dashboard upper visor (A).
2. Disconnect the connectors (B).
3. Remove the self-tapping screws and the audio-HVAC subdisplay unit (A).
4. Install the display in the reverse order of removal.

Scheme 122

1. Remove the front door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exterior-body-panels/#doors__front-door-panel-removalinstallation) ).
2. Pull the speaker (A) straight out, just enough to release the upper clips. Then lift the speaker straight up to release the lower clips (B). NOTE: If you pull the speaker out too far from the door, you will damage the lower clips.
3. Disconnect the 2P connector (C), and remove the speaker.
4. Install the speaker in the reverse order of removal.

Scheme 123

1. Remove the rear door panel (see «FRONT DOOR WEATHERSTRIP REPLACEMENT»(/acura/rl/ii-2004-2008/remont/exterior-body-panels/#doors__front-door-weatherstrip-replacement) ).
2. Remove the three mounting screws from the rear speaker (A).
3. Disconnect the 2P connector (B), and remove the rear door speaker.
4. Install the speaker in the reverse order of removal.

Scheme 124

1. Remove the front door sash inner trim (see «FRONT DOOR SASH INNER TRIM REPLACEMENT»(/acura/rl/ii-2004-2008/remont/exterior-body-panels/#doors__front-door-sash-inner-trim-replacement) ).
2. Remove the screws and tweeter speaker (A) from the quarter inner trim (B).
3. Install the speaker in the reverse order of removal.

Scheme 125

1. Remove the rear shelf (see «TRIM REMOVAL/INSTALLATION - REAR SHELF AREA»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-rear-shelf-area) ).
2. Disconnect the 2P connector (A), then remove the connector (B) from the rear twiddler bracket (C).
3. Remove the screws and the rear twiddler (D).
4. Install the speaker in the reverse order of removal.

Front Center Speaker

Note. Put on gloves to protect your hands. Take care not scratch the dashboard.

Scheme 126

Scheme 127

1. Remove the dashboard upper visor (A).
2. Disconnect the connectors (B).
3. Remove the screws, connector (A), and the front center speaker (B).
4. Install the speaker in the reverse order of removal.

Scheme 128

1. Remove the rear shelf (see «TRIM REMOVAL/INSTALLATION - REAR SHELF AREA»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-rear-shelf-area) ) and rear shelf undercover.
2. Disconnect the 2P connector (A), then remove connector clip (B) from the subwoofer duct (C).
3. Remove the nuts and the subwoofer (D).
4. Install the speaker in the reverse order of removal.

Scheme 129

1. Remove the right side trunk trim (see «TRIM REMOVAL/INSTALLATION - TRUNK AREA»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-trunk-area) ).
2. Loosen and remove the mounting bolts, then pull out the stereo amplifier (A).
3. Disconnect the connectors (B).
4. Install the stereo amplifier in the reverse order of removal.

AcuraLink Control Unit (XM Receiver) Removal/Installation

Note. The AcuraLink must be reactivated by Acura Client Services when

1. The AcuraLink (XM) unit is replaced.
2. DATA RESET was selected while in the self-diagnostic function.
3. Vehicle ownership changes.

Scheme 130

1. Remove the left side trunk trim (see «TRIM REMOVAL/INSTALLATION - TRUNK AREA»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-trunk-area) ).
2. Disconnect the antenna 2P connector (A) and 20P, 16P connectors (B) from the AcuraLink control unit (XM receiver) (C).
3. Loosen the mounting bolts, then pull out the AcuraLink control unit (XM receiver).
4. Install the AcuraLink control unit (XM receiver) in the reverse order of removal. NOTE: If you replaced the AcuraLink control unit, make sure it has the latest software (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#acuralink) ).
5. 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.

Scheme 131

1. Remove the left side trunk trim (see «TRIM REMOVAL/INSTALLATION - TRUNK AREA»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-trunk-area) ).
2. Disconnect the 2P connector (A) and 14P connector (B) from the XM receiver (C).
3. Loosen the mounting bolts, then pull out the XM receiver.
4. Install the XM receiver in the reverse order of removal.

Scheme 132

1. Remove the console box mat, screws, and the auxiliary jack trim (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#consoles__center-console-removalinstallation) ).
2. Remove the screws and the auxiliary jack assembly (A) from the auxiliary jack trim (B).
3. Install the unit in the reverse order of removal.

Scheme 133

1. Remove the stereo amplifier (see «STEREO AMPLIFIER REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#audio-system) ).
2. Remove the screws and the active noise control unit (A).
3. Install the unit in the reverse order of removal.

Scheme 134

1. Remove the headliner (see «HEADLINER REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__headliner-removalinstallation) ).
2. Disconnect the connectors (A), then remove the screws and the active noise control microphone (B).
3. Remove the cap (C) from the base (D).
4. Install the microphone in the reverse order of removal.

Scheme 135

Scheme 136

1. Remove the driver's airbag assembly (see «DRIVER'S AIRBAG REPLACEMENT»(/acura/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system) ).
2. Remove the 20P connector from the cable reel.
3. Measure the resistance between the No. 7 and No. 8 terminals in each switch position according to the table. RESISTANCE CHART Position Resistance OFF 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
4. If the resistance is not as specified, replace the remote switch.
5. Use a diode tester between the terminals in each switch position (Scheme 136)
6. If the diode test is not as specified, replace the switch.

Scheme 137

Scheme 138

1. Remove the C-pillar trim (see «C-PILLAR TRIM»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__c-pillar-trim) ).
2. Disconnect the connectors (A) from the AM/FM antenna amplifier (B). AM/FM main antenna amplifier AM/FM subantenna amplifier
3. Remove the bolt and AM/FM antenna amplifier.
4. Install the unit in the reverse order of removal.

Scheme 139

1. Remove the high mount brake light (see «HIGH MOUNT BRAKE LIGHT REPLACEMENT»(/acura/rl/ii-2004-2008/remont/exterior-lights/#exterior-lights) ).
2. Remove the cover (A) from the satellite signal XM antenna module (B), then disconnect the satellite signal feeder connectors (C) and terrestrial signal feeder connectors (D).
3. Remove the screws and the XM antenna module.
4. Install the unit in the reverse order of removal.

AM/FM Antenna Repair

Note. To make an effective repair, the broken section must not be longer than one inch.

Scheme 140

Scheme 141

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 AM/FM antenna wire (B) with cellophane tape (C).
3. Mix the silver conductive paint thoroughly. Using a small brush, 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.

See also:
• NAVIGATION SYSTEM
• CABLE REEL REPLACEMENT
• CENTER TRIM REMOVAL/INSTALLATION
• CLIMATE CONTROL UNIT REMOVAL/INSTALLATION
• FRONT DOOR PANEL REMOVAL/INSTALLATION
• FRONT DOOR WEATHERSTRIP REPLACEMENT
• FRONT DOOR SASH INNER TRIM REPLACEMENT
• TRIM REMOVAL/INSTALLATION - REAR SHELF AREA
• TRIM REMOVAL/INSTALLATION - TRUNK AREA
• GENERAL TROUBLESHOOTING INFORMATION
• CENTER CONSOLE REMOVAL/INSTALLATION
• HEADLINER REMOVAL/INSTALLATION
• C-PILLAR TRIM
• HIGH MOUNT BRAKE LIGHT REPLACEMENT
• POOR AM OR FM RADIO RECEPTION OR INTERFERENCE
• POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND)
• RADIO STAYS POWERED WITH THE IGNITION SWITCH OFF
• NO SOUND IS HEARD FROM SPEAKER(S) (DISPLAY IS NORMAL)
• POOR OR NO SOUND WITH XM RADIO (AUDIO UNIT DOES DISPLAY XM CHANNELS)
• XM RADIO DISPLAY IS BLANK AND NO STATION INFORMATION IS DISPLAYED (WITH ACURALINK)
• AUDIO SYSTEM SOUND IS WEAK OR DISTORTED (DISPLAY IS NORMAL)
• XM RADIO PRESET MEMORY IS LOST (WITH ACURALINK)
• AUDIO DISC DOES NOT EJECT
• RADIO PRESET MEMORY IS LOST
• AUDIO UNIT BUTTON ILLUMINATION DOES NOT WORK
• AUDIO DISC CHANGER DOES NOT LOAD ALL SIX DISCS
• AUDIO DISC CHANGER DOES NOT MOVE BETWEEN DISCS
• VOLUME DOES NOT CHANGE
• RADIO TUNER DOES NOT CHANGE STATIONS
• AUDIO DISC DOES NOT LOAD
• AUDIO DISC DOES NOT PLAY
• AUDIO DISC SKIPS
• AUDIO REMOTE SWITCH DOES NOT WORK PROPERLY
• ERROR CODE: XM NO SIGNAL IS DISPLAYED
• ERROR CODE: XM ANTENNA IS DISPLAYED
• BOOMING SOUND WHILE DRIVING WITH AUDIO UNIT ON OR OFF
• SEEK STOP TEST
• AUDIO UNIT REMOVAL/INSTALLATION
• ERROR CODE
• ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION
• SOUND QUALITY DIAGNOSIS
• ELECTRICAL NOISE TEST
• SELF-DIAGNOSTIC FUNCTION
• PHASE TEST
• INDIVIDUAL SPEAKER TEST
• SOUND BALANCE TEST
• SOUND JUDGING