Audio System Self-diagnostic Function

Audio System Self-diagnostic Function

How to Obtain the Audio Unit Serial Number

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

NOTE: You can only do this procedure after the battery power has been disconnected once and reconnected to the audio unit and the audio unit displays CODE.

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.






3. The display shows an 8 digit serial number.

Example: 12345678





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

5. The self-diagnostic function ends when you turn the audio unit off, or turn the ignition switch to LOCK (0).

How to check for audio unit condition

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

2. Enter the anti-theft code.

3. 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. Release the buttons and the self-diagnostic function begins.





4. DIAG appears on the audio unit to indicate you have entered the self-diagnostic mode.

5. By pressing a preset button while DIAG is displayed, the input triggers the diagnostic mode that is assigned to that preset switch.

No. 3 button

Entire LCD lighting mode: Turns on the entire LCD to show if there are any LCD segment failures. If any LCD segments fail to turn on, replace the applicable display unit.

No. 4 button

Entire LCD light-out mode: Turns off the entire LCD to show if there are any LCD segments that are stuck on. If any LCD segments fail to turn off, replace the applicable display unit.

No. 1 button ('07 model with navigation)

Active noise cancellation system function check mode:

How to check the active noise cancellation system

- With the engine stopped and while in DIAG mode, turn the ANC ON to OFF by pressing the No. 1 button. A low-Frequency hum (50 Hz) should sound for about a minute.
- If the hum does not sound, check for an open in the wire between the active noise cancellation unit and the audio unit.
- If the hum does not sound for a minute, check for an open in the wire between the active noise cancellation unit and the microphone.
- Test drive the vehicle at 55 mph (88 km/h) and enter the DIAG mode. Turn the active noise cancellation system OFF and back to ON (II), the active noise cancellation system should activate.

NOTE: The active noise cancellation system is cancelled when any door is opened.

6. The self-diagnostic function ends when you turn the audio unit off, or turn the ignition switch to LOCK (0).

How to check the active noise cancellation system ('08-10 models)

NOTE: Before diagnosis, check that all speakers operate. If no sound is heard from the speaker, do the No sounds is heard from speaker(s) troubleshooting No Sound Is Heard From Speaker(s) (Display Is Normal) (08-10 Models With Premium Audio System).

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

2. Enter the anti-theft code.

3. 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.






4. DIAG appears on the audio unit to indicate you have entered the self-diagnostic mode.

5. While in DIAG mode, press the No. 1 button once, and ANC ON appears on the display and the ANC diagnostic mode begins.






6. There are 10 test modes. When the display changes from ANC ON to ANC OFF, you completed one test, and the next one begins.

- If no failure is detected, a low-Frequency hum (50 Hz) should sound for a minute.
- If any failure is detected, a low-Frequency hum (50 Hz) should sound for about a second.
- By pressing the No. 1 button and changing the display from ANC OFF into ANC ON, the test you are on ends, and the next test begins.















Cylinder suspension signal (CSSAM1/CSSAM2) input test

- Turn the ignition switch to LOCK (0).

- Connect the HDS to the data link connector (DLC) Reading and Clearing Diagnostic Trouble Codes.

- Start the engine.

- 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 to ON.

- While in DIAG mode, press the No. 1 button once, and ANC ON appears on the display and the ANC diagnostic mode begins.





- The self-diagnostic function ends when you turn the audio unit off, or turn the ignition switch to LOCK (0).