Acura RL. Manual - part 190

Fig. 36: Checking Continuity Between Audio Unit Connector E (5P) No. 1 And No. 2 Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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 ).

POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND)

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 ). Check that the audio

unit is properly connected.

Is it connected properly?

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

Friday, June 05, 2009 3:53:07 PM

Page 38

YES - Go to step 6.

NO - Reconnect the connector, and recheck the function.

6. Disconnect audio unit connector A (20P).

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.

Fig. 37: Measuring Voltage Between No. 2 And No. 10 Terminals Of Audio Unit Connector A
(20P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

Fig. 38: Measuring Voltage Between Audio Unit Connector A (20P) No. 20 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

Friday, June 05, 2009 3:53:07 PM

Page 39

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 0.1 V?

YES - Replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

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

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 ). Disconnect audio unit

connector A (20P).

5. Measure the voltage between the No. 2 terminal of audio unit connector A (20P) and body ground.

Fig. 39: Measuring Voltage Between No. 2 Terminal Of Audio Unit Connector A (20P) And
Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

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

Friday, June 05, 2009 3:53:07 PM

Page 40

Is there battery voltage?

YES - Check for short to power on the PUR wire.

NO - Replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

NO SOUND IS HEARD FROM SPEAKER(S) (DISPLAY IS NORMAL)

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.

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.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System - RL

Friday, June 05, 2009 3:53:07 PM

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