Audio System Self-Diagnostic Function
Audio System Self-Diagnostic Function
How to Obtain the Audio Unit Serial Number
NOTE: This procedure can only be done after the power has been disconnected once and reconnected to the audio unit, and the audio unit displays CODE when the audio unit is turned on.
1. Turn the ignition switch to ON (II).
2. Make sure the audio system is turned off.
3. Push and hold the preset No. 1 and No. 6 buttons.
4. While holding the buttons, push the VOL PUSH PWR knob to ON.
5. Release the buttons and the self-diagnostic function begins.
6. The display shows 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 self-diagnostic function, turn the audio unit off, or turn the ignition switch to LOCK (0).
How to check the audio system condition
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:
- 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. Check any official Honda service website for more information about the audio system.
1. Turn the ignition switch to ON (II).
2. Make sure the audio system is turned off.
3. Push and hold the preset No. 1 and No. 6 buttons.
4. While holding the buttons, push the VOL PUSH PWR knob to ON.
5. Release the buttons and the self-diagnostic function 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.
NOTE: Any other diagnostic screens shown are for factory use only.
No. 2 button
Audio button, knob, and audio remote switch detection: Allows individual manual selection of all audio panel knobs, buttons, and remote switches to verify if they are functional. When properly detected, the applied knob button, or audio remote switch name and/or value will be displayed. To exit this mode, go to step 7. Once you exit this test, you must start again at step 1.
No. 3 button
Entire LCD lighting/light-out mode: Turns on/off the entire LCD to show the presence or absence of an LCD segment.
No. 4 button
Duty indication mode (for the Illumination dim): Indicates the duty for the Illumination dim when the dash lights are on.
No. 5 button
Vehicle speed pulse (VSP) indication mode: Indicates the vehicle speed pulse.
FM button (Push and hold 5 sec.)
Reception level indication mode: Indicates the reception level (dB). When entering the reception level check mode, the AM/FM or FM button is used to change the S-METER, OFFSET, MP and USN (A/I).
Canceling the Self-Diagnostic Function
- To end the self-diagnostic function, turn the audio unit off or turn the ignition switch to LOCK (0).
Display Specifications
NOTE: Any other diagnostic screens shown are for audio manufacturer's use only.
Entry LCD lighting/lights-outs mode (press No. 3 button)
This diagnostic screen checks for segments that may be dead (off) or stuck on.
All the segments in the display must appear. If there are dead segments, replace the audio unit Audio Unit Removal/Installation.
When the display segments are all on, press the No. 3 button. The entire display must turn black. If any segments are stuck on, replace the audio unit Audio Unit Removal/Installation.
Illumination level (for the gauge illumination) indication (press No. 4 button)
This diagnostic screen checks the gauge illumination input.
With the headlights on, you should see a value between 1 (max low) and 22 (max high).
When you dim and brighten the gauge with the dimmer knob, you should see this value change accordingly. If it doesn't, check for B-CAN DTCs.
Vehicle speed pulse indication (press No. 5 button)
This diagnostic screen checks that the audio unit is receiving the VSP indication.
When you drive the vehicle, the VSP indicates the vehicle speed in km/h.
Reception level indication (Push and hold 5 sec FM button)
This diagnostic screen checks the audio units reception level that can used in diagnosis check the audio reception quality.
To check AM or FM reception, press and hold the applicable band button for 5 seconds, then release. The reception level is displayed in decibels (dB). You can check the reception with or without the amplifier. Press the A. SEL button to toggle between turning the amplifier on and off. You can change the station with the tuner button to check the reception level of any specific radio station. Compare this value with a known-good vehicle to check the audio unit reception.
Reception level indication mode
This diagnostic screen checks the audio unit's reception level. This level then can be used in the diagnosis of audio unit reception quality. The reception level is displayed in decibels (dB).
Preparation:
- Park the vehicle outdoors in an appropriate location for good radio 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. The AM/FM antenna amplifier is on (A-SEL or TP is not displayed in the audio-HVAC display).
2. Tune to the FM radio station you wrote down in Preparation using the TUNING knob, and note the decibel level of that station when you release the button.
3. Press and release the SCAN button to turn the AM/FM antenna amplifier off (ASEL or TP is now displayed in the audio-HVAC display).
4. Tune to the FM radio station you wrote down in Preparation using the TUNING knob, and note the decibel level of that station when you release the button.
5. Press and release the SCAN button to turn the AM/FM antenna amplifier back on (A-SEL or TP is not displayed in the audio-HVAC display).
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 knob, and note the decibel level of that station when you release the button.
8. Press and release the SCAN button to turn the antenna amplifier off (ASEL or TP is now displayed in the audio-HVAC display).
9. Tune to the AM radio station you wrote down in Preparation using the TUNING knob, and note the decibel level of that station when you release the button.
10. Turn the ignition switch to LOCK(0) or audio unit off to exit the test mode.
11. 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.
Speaker check mode
NOTE:
- Not all self-diagnostic functions appear on all models.
- There may be other self-diagnostic functions that are for factory use only.
1. Turn the ignition switch to ON (II).
2. Make sure the audio system is turned off.
3. Push and hold the preset No. 1 and No. 3 buttons.
4. While holding the buttons, push the VOL PUSH PWR knob to on.
5. Release the buttons and the speaker check mode begins. A tone should sound from one speaker.
6. Each time you press the SKIP button, the test moves to the next speaker in the order listed in the table.
NOTE: Adjust the volume level to a comfortable level.
Display Specifications
Canceling the Speaker Check Mode
- To end the speaker check mode, turn the audio unit off, or turn the ignition switch to LOCK (0).
NOTE: The volume level remains at the same level when you did the speaker test. If you turned the volume up to do the speaker check mode test, return the volume to its normal level.
Active Noise Cancellation (ANC) System Check Mode
NOTE:
- Not all self-diagnostic functions appear on all models.
- There may be other self-diagnostic functions that are for factory use only.
- Only perform this test when you are guided from a troubleshooting procedure.
- This test does not work with aftermarket speakers or amplifiers. All components must be OEM to do this test.
1. Turn the ignition switch to ON (II).
2. Make sure the audio system is turned off.
3. Push and hold the preset No. 1 and No. 6 buttons.
4. While holding the buttons, push the VOL PUSH PWR knob to ON.
5. Press the No. 1 button, then the active noise cancellation (ANC) system check mode begins.
How to check the active noise cancellation system in this check mode
- While in this system check mode, press the No. 1 button to move to the next test.
- You must remember how many times you pressed the No. 1 button. The system will not show which test item you are doing.
- For test items 1 thru 10, the speaker makes a low-frequency hum (50 Hz) when the system is normal for 5 seconds up to 1 minute.
- When there is a failure in the system, the speaker will not make a low-frequency hum (50 Hz) or the hum stops within 5 seconds for tests 1 thru 10.
- The check mode automatically cancels when the time reaches 1 minute after starting each test.
- When you reach the 11th test item, the test loops ON and OFF doing the 11th test each time you press the No. 1 button. It does not move to a new test.
- This check mode ends when you start the engine (ignition switch in START (III)), because power to the audio system is cut off when the ignition switch is in START (III).
- This test is not available to do all items at once. If you need to use the 2nd, 7th, or 11th test, start the check mode with the engine idling. If you need to check test item 9th and/or 10th, start the check mode with the engine stopped. Other test items are available in both conditions.
Screen indication ON
Screen indication OFF
Canceling the ANC System Check Mode
- The self-diagnostic function ends when the ignition switch is turned to LOCK (0).