Honda Civic. Manual — part 122

The audio system has a self-diagnostic function.

SERIAL NUMBER DISPLAY MODE

To obtain the audio unit serial number on a vehicle, do the following:

1. Turn the ignition switch to ON (II).
2. With the audio unit turned off, push and hold the No. 1 and No. 6 buttons.

While holding the buttons, push the VOL push PWR knob (A) to ON.

Fig. 21: Identifying Buttons And Self-Diagnostic Function
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. The display will show a 8 digit serial number.

Eight digits of the serial number (example 12345678)

Fig. 22: Identifying Eight Digits Of Serial Number

NOTE:

This procedure can only be performed when the battery
power is disconnected from the audio unit and the
audio unit displays CODE.

To obtain the navigation unit serial number, refer to
NAVI ECU in the navigation system diagnostic mode .

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Use all 8 numbers as the serial number when using the Interactive Network (i

N) to retrieve the 5 digit anti-theft code.

5. The serial number display mode ends when you turn the audio unit off, or turn

the ignition switch to LOCK (0).

HOW TO CHECK FOR AUDIO SYSTEM CONDITION

1. Turn the ignition switch to ON (II).
2. Push and hold the No. 1 and No. 6 buttons. While holding the buttons, push the

VOL push PWR knob (A) to ON. Release the buttons and the self-diagnostic
function begins.

Fig. 23: Identifying Buttons And Self-Diagnostic Function
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. By pressing a preset button, the input will trigger the diagnostic mode that is

assigned to that preset switch.

NO. 3 button

Entire LCD lighting/light-out mode: Turns on/off the entire LCD to show the
presence or absence of an LCD failure.

NOTE:

The audio unit must be in the code enter screen before
performing the self-diagnostic function.

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)

NO. 4 button

Duty (for the Illumination dim) indication mode: Indicates the duty for the
Illumination dim.

NO. 5 button

Vehicle speed pulse indication mode: Indicates the vehicle speed pulse.

FM button (Push and hold 5 sec.)

Reception level check mode: Indicates the reception level. When entering the
reception level check mode, the AM/FM button is used to change the main/sub
antenna.

CD button (Push and hold 5 sec.)

DRAM residual quantity indication mode: Indicates the DRAM residual
quantity.

4. The self-diagnostic function will end when the audio unit is turned off, or the

ignition switch to LOCK (0).

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)

Fig. 24: CD Buttons Self-Diagnostic Function -: Display
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Speaker check mode

5. Turn off the audio unit.
6. Push and hold the No. 1 and No. 3 buttons. While holding the buttons, push the

VOL push PWR knob to ON. Release the buttons and the speaker check mode
will begin. A low-frequency hum should sound for about one minute. Change
the test speaker by push the SKIP button. If you find a speaker(s) with no
sound, check the speaker and harness connections. If the connections are good,
replace the speaker and retest.

7. The self-diagnostic function ends when the audio unit is turned off, or the

ignition switch to LOCK (0).

ERROR CODES

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

2008 Honda Civic LX

2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)