Acura RL. Instruction — page 187

Fig. 17: Audio System — Circuit Diagram (4 Of 4)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

SELF-DIAGNOSTIC FUNCTION

The audio system has a self-diagnosis function.

HOW TO ENTER THE SELF-DIAGNOSIS MODE

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.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

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© 2005 Mitchell Repair Information Company, LLC.

Fig. 18: Identifying Buttons And PWR Knob
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

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.

Fig. 19: Identifying Buttons And PWR Knob
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

NOTE:

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

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

me

Friday, June 05, 2009 3:53:06 PM

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© 2005 Mitchell Repair Information Company, LLC.

Fig. 20: Identifying LCD Lighting Mode
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

Fig. 21: Identifying LCD Lights-Out Mode
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

me

Friday, June 05, 2009 3:53:06 PM

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© 2005 Mitchell Repair Information Company, LLC.

Fig. 22: Identifying Climate Control System Communication Check Mode
Courtesy of AMERICAN HONDA MOTOR CO., INC.

AUDIO AMPLIFIER COMMUNICATION CHECK MODE

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

Fig. 23: Identifying Audio Amplifier Communication Check Mode
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Audio System — RL

me

Friday, June 05, 2009 3:53:06 PM

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© 2005 Mitchell Repair Information Company, LLC.

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