Operation CHARM: Car repair manuals for everyone.
Home >> Honda >> 2012 >> Civic HF L4-1.8L >> Repair and Diagnosis >> Accessories and Optional Equipment >> Radio, Stereo, and Compact Disc >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> Audio System Self-Diagnostic Function

Audio System Self-Diagnostic Function






Audio System Self-Diagnostic Function

How to Obtain the Audio Unit Serial Number

The audio-navigation unit (with navigation) does not support this function.

NOTE: This procedure can only be done after the power has been disconnected and reconnected to the audio unit, and the audio unit displays Push and hold POWER (Power) for more than two seconds to start. when the audio unit is turned on.

1. Turn the ignition switch to ON (II).

2. Make sure the audio unit is turned off.

3. Use the INFO button on the steering wheel to select the screen that displays Audio Off.

4. Press and hold the preset No. 1 and No. 6 buttons.

5. While holding the buttons, press the POWER button.

6. Release the buttons, and displays an 8-digit serial number.




7. Use all 8 numbers as the serial number when using the Interactive Network (iN) to retrieve the 5-digit anti-theft code.

8. To end the function, turn the audio system off, or turn the ignition switch to LOCK (0).

How to Check the Audio System Condition

The audio-navigation unit (with navigation) does not support this diagnosis.

The audio system has a self-diagnostic function to help find problems with the audio system. To run the self-diagnostic function, do the following:

NOTE:
* Check the vehicle battery condition first Battery Test.
* Not all self-diagnostic functions appear on all models.
* There may be other self-diagnostic functions that are for factory use only.
* The self-diagnostic function does not find every problem with the audio system.

1. Turn the ignition switch to ON (II).

2. Make sure the audio unit is turned off.

3. Press and hold the preset No. 1 and No. 6 buttons.

4. While holding the buttons, press the POWER button.

5. Release the buttons, and the self-diagnosis begins.




6. When you are in the self-diagnostic mode, pressing a preset button starts the diagnostic mode that is assigned to that preset button. To exit this mode, go to step 7. Once you exit this test, you must start again at step 1.

* No. 2 button: Audio button, knob, and audio remote switch detection mode
* No. 3 button*: Entire LCD lighting/light-out mode
* No. 4 button: Duty indication mode (for the Illumination dim)
* No. 5 button: Vehicle speed pulse (VSP) indication mode
* FM button or AM button (Press and hold 5 sec): Reception level indication mode

*: Without multi-information display

7. To end the self-diagnostic mode, turn the audio system off, or turn the ignition switch to LOCK (0).

Audio Button, Knob, and Audio Remote Switch Detection Mode (press No. 2 button)

This test checks allows you to manually check all the audio switch panel buttons and knobs, and the audio remote switch buttons. When the button, the knob, or the switch is properly detected, the name or value of the input appears on the display.

NOTE:
* The POWER button does not support this diagnosis.
* The Display/Information button and the MENU button on the audio remote switch are not supported with this diagnosis.

Entire LCD Lighting/Lights-Outs Mode (press No. 3 button)

This diagnostic screen checks for segments that may be dead (off) or stuck on.

NOTE: The multi-information display unit does not support this diagnosis.

All the display segments should be on. If any segments are dead (off), replace the audio switch panel. With all the segments on, press the No. 3 button a second time. The entire display must turn black. If any segments are stuck on, replace the audio switch panel Audio Unit Removal and Installation.






Illumination Level (for the Gauge Illumination) Indication (press No. 4 button)

This diagnostic screen checks the gauge illumination input.

With the headlights on, use the dimmer knob to dim and brighten the gauge. You should see the value change from 1 (max low) to 22 (max high). If it does not change, go to Display does not dim or brighten with dimmer troubleshooting; with multi-information display Display Does Not Dim Or Brighten With Dimmer (Without Multi-Information Display), without multi-information display Display Does Not Dim Or Brighten With Dimmer (With Multi-Information Display).






*: The display screen is black when the dashlight brightness is max low.

Vehicle Speed Pulse Indication (press No. 5 button)

This diagnostic screen checks that the audio unit is receiving the VSP indication.

When you test drive the vehicle, the VSP indicates the vehicle speed in km/h.






Reception Level Indication Mode (press and hold FM button or AM button for 5 sec)

This diagnostic screen checks the audio unit's reception level in decibels (dB). This level then can be used in the diagnosis of audio unit reception quality.






Preparation:
* Park the vehicle outside in a good location away from tall buildings, mountains, high-voltage power line or any other object that may interfere with reception.
* Tune to a powerful local FM radio station then write down the radio station number.
* Tune to a powerful local AM radio station then write down the radio station number.

1. Enter the reception level indication mode in the self-diagnostic function.

2. Tune to the FM radio station you wrote down in Preparation using the TUNING button, and note the decibel level of that station when you release the button.

3. Press and release the SETUP button to turn the AM/FM antenna amplifier off.

4. Note the decibel level of that station with the AM/FM antenna amplifier off.

5. Press and release the SETUP button to turn the AM/FM antenna amplifier back on.

6. Press and hold the AM button for more than 5 seconds to enter the AM reception mode.

7. Tune to the AM radio station you wrote down in preparation using the TUNING button, and note the decibel level of that station.

8. Press and release the SETUP button to turn the AM/FM antenna amplifier off.

9. Note the decibel level of that station with the AM/FM antenna amplifier off.

10. Press and release the SETUP button to turn the AM/FM antenna amplifier back on.

11. To end the self-diagnostic mode, turn the audio system off, or turn the ignition switch to LOCK (0).

12. Compare your results to a known-good, (make sure it is the same year and trim level) in the same location and direction, and under the same environmental conditions.

* If the reception level is within 10 % of the known-good vehicle, no repair is needed at this time.
* If the reception level is at least 10 % less than the known good vehicle, go to Poor AM or FM radio reception or interference troubleshooting Poor AM or FM Radio Reception Or Interference (Without Navigation).

Speaker Check Mode

NOTE:
* Check the vehicle battery condition first Battery Test.
* Not all self-diagnostic functions appear on all models.

1. Turn the ignition switch to ON (II).

2. Make sure the audio unit is turned off.

3. Press and hold the preset No. 1 and No. 3 buttons.

4. While holding the buttons, press the POWER button.

5. Release the buttons, and the speaker check mode begins.


















6. To end the speaker check mode, turn the audio system off, or turn the ignition switch to LOCK (0).

Display Diagnosis

Service Diag

NOTE:
* Check the vehicle battery condition first Battery Test.
* This diagnosis is applied to the multi-information display unit only.
* Not all self-diagnostic functions appear on all models.
* There may be other self-diagnostic functions that are for factory use only.
* If you run this diagnosis with a door open, press the INFO button to exit the door open screen.

1. Turn the ignition switch to ON (II).

2. Press the MENU button to display the Vehicle Menu.

3. Select the Vehicle Information (A), and press and hold the MENU button (B) and then the SOURCE button (C) on the audio remote switch for about 10 seconds. The Service Diag menu screen appears.





4. Use the directional pad (D) to select the diagnosis, then press the SOURCE button to enter your selection.

NOTE: The Camera diagnosis is not used for this vehicle.




5. To end the self-diagnostic function, turn the audio system off, press the MENU button, or turn the ignition switch to LOCK (0).

In Line Diag

NOTE: If the vehicle left the factory in the factory diagnostic mode, you will see this screen every time you turn the ignition switch to ON (II). You may also see this screen if you recently replaced the multi-information display unit.

When the multi-information display unit is powered up for the first time at the factory or sometimes when a remanufactured multi-information display unit is installed, the factory diagnostic screen (In Line Diag) appears. Normally the factory does the steps necessary to verify proper operation and terminate the factory diagnosis. Until the proper confirmation sequence is done, the screen appears every time the vehicle is started. Also, the In Line Diag function can be performed from the Service Diag menu.

Select the In Line Diag in the Service Diag menu, then select the Diagnostic Result.






The In Line Diag function runs automatically. When the diagnosis finishes, the icons turn different colors based on their test status (OK or NG).

NOTE: The Result (A) indicates NG until the audio remote switch buttons (the Display/Information button or the MENU button and the SOURCE button or the directional pad) are pressed.






After the test is complete, press the SOURCE button to exit.






Display Check

These diagnostic screens allow you to troubleshoot the center display unit. Select the item you want to troubleshoot, and follow the diagnostic instructions.
* Color Bar
* Black
* White
* Red
* Green
* Blue
* Gray Bar
* Point

Color Bar

This screen shows the colors being used for the multi-information display unit. This is for factory use only.

The colors should appear in the following order: White, Yellow, Light Blue, Green, Purple, Red, Blue, Black






Black

This screen checks for pixels that may be stuck on. The entire display must be black. If pixels are stuck on, replace the multi-information display unit Multi-Information Display Unit Removal And Installation.






White

This screen checks for pixels that may be dead (off). The entire display must be white. If there are dead pixels, replace the multi-information display unit Multi-Information Display Unit Removal And Installation.






Red, Green, Blue

These screens checks that the multi-information display unit is displaying red, green, and blue colors properly. If any of the colors are missing, replace the multi-information display unit Multi-Information Display Unit Removal And Installation.






Gray Bar

This screen checks problems with contrast. You should be able to see the changes from bar to bar across the scale. It is normal for the two bars on either side to appear the same. If you cannot see changes from bar to bar, replace the multi-information display unit Multi-Information Display Unit Removal And Installation.






Point

This screen is for factory use only.






Product Info

This screen displays the parts number (A), the product number (PN), and the serial number (S/N) about the multi-information display unit. This is for factory use only.






Artwork

This screen allows you to select the iPod album art function on or off. Refer to the Owner's Manual for the album art function.




pro multis · About Operation CHARM