Acura RL. Manual - part 197

NO - Go to 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 ). 

RADIO PRESET MEMORY IS LOST 

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. 

Fig. 74: Measuring Voltage Between Audio Unit Connector A (20P) No. 10 Terminal And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

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.

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 .  

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 66 

© 2005 Mitchell Repair Information Company, LLC. 

4. Reconnect audio unit connector A (20P).  

5. Measure the voltage between audio unit connector A (20P) No. 20 terminal and body ground. 

Fig. 75: Measuring Voltage Between Audio Unit Connector A (20P) No. 20 Terminal And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

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 ). 

AUDIO UNIT BUTTON ILLUMINATION DOES NOT WORK 

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). 

NOTE:



Check the vehicle battery condition first.  



Always check the connectors for poor connections or loose terminals. 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 67 

© 2005 Mitchell Repair Information Company, LLC. 

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). 

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. 

Fig. 76: Checking Continuity Between No. 19 Terminal And No. 1 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

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. 

NOTE:

Eject all the CDs before removing the audio unit and CD changer to 
prevent damaging the CD player's load mechanism.

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 68 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 77: Measuring Voltage Between Audio Unit Connector A (20P) No. 9 Terminal And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

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 

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 ). 

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.  

NOTE:



Disc labels should not be used in the audio unit. They may damage the 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

  

me 

 

Friday, June 05, 2009 3:53:07 PM

Page 69 

© 2005 Mitchell Repair Information Company, LLC.