How to Use the Audio System Self-Diagnostic Function

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Honda Crosstour, 2014 Honda Crosstour, 2013 Honda Crosstour, 2012 Honda Crosstour, and 2011 Honda Accord Crosstour. However, it is still accessible from the selected car via links, so may be relevant.

Turn the ignition switch to ON (II). Turn the audio unit off.
Push and hold the No. 1 and No. 6 buttons. While holding the buttons, push the VOL PUSH PWR knob to on. Release the buttons and the self-diagnostic function begins.

Fig 1: Identifying Audio System Component Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.
By pressing a preset button, the input starts the diagnostic mode that is assigned to that preset button.
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 remote switch name and/or value is displayed. To exit this mode, go to next step.

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.

No. 4 button

Illumination level indication mode: Indicates the duty cycle for the illumination dimmer control of the gauge assembly.

Gauge dimmer control values:

Headlights off: OFF

Headlights on: 01 (max low) through 22 (max high)

No. 5 button

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

AM/FM or 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 or FM button is used to change the antenna amplifier on/off.

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-HVAC display displays CODE. With the audio unit switched off, push and hold the preset button No. 1, No. 6 and the VOL PUSH PWR knob, then release. The audio unit displays the eight digit serial number (example 12345678). Use the eight digit serial number when using the interactive network (iN) to get the 5 digit anti-theft codes.

Serial Number

Fig 2: Audio Unit Screen Display - Serial Number
Courtesy of AMERICAN HONDA MOTOR CO., INC.
To end the self diagnosis, turn the audio unit off or turn the ignition switch to LOCK (0).
NOTE: Any other diagnostic screens shown are for factory use only.

Display Specifications

Entire 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 display segments should be on. If any segments are dead (off), replace the audio-HVAC subdisplay unit or the audio-HVAC display unit. With all the segments on, press the No. 3 button again. The entire display must turn black If any segments are stuck on, replace the audio-HVAC subdisplay unit or the audio-HVAC display unit.

Fig 3: Audio Unit Screen Display - Entire LCD Lighting/Lights-Outs Mode (Press 3 Button)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Illumination level (for the gauge illumination) indication (press No. 4 button)

This diagnostic screen checks the gauge illumination. If the headlights are off, the display reads OFF.

If the headlights are on, you should see a values between 01 (max low) and 22 max high.

When you dim and brighten the gauge, you should see this value change accordingly. If it does not, check for B-CAN DTCs.

Fig 4: Audio Unit Screen Display - Illumination Level (Press 4 Button)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

Fig 5: Audio Unit Screen Display - Vehicle Speed Pulse Indication (Press 5 Button)
Courtesy of AMERICAN HONDA MOTOR CO., INC.