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Self-Diagnostic Function

Self-diagnostic Function

The audio system has a self-diagnostic function.

How to Use the Audio System Self-diagnostic Function

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). Turn the audio unit off.
2. 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.


Audio System Circuit Diagram (Part 10):






3. By pressing a preset button, the input triggers the diagnostic mode that is assigned to that preset switch.

No. 2 button
Audio button, knob, and 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 selected knob, button, or remote switch name and/or value is displayed. To exit this mode, go to step 4.

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 switch between the main and sub antenna.

How to Obtain the Audio Unit Serial Number

NOTE: To obtain the serial number, you must disconnect the power to the audio unit, and the audio unit displays CODE. With the audio unit switched off, push and hold the preset buttons 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.






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

NOTE: Any other diagnostic screens shown are for factory use only.









Without Navigation

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. The amplifier is on when the letter A appears next to the db indication. 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.

With Navigation

To check FM reception, press and hold the AM/FM button for 5 seconds, then release. To check the AM band, press and hold the AM/FM button for another 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. The amplifier is on when the letter A appears next to the db indication. 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.

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). Turn the audio unit off.
2. 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 begins. A test tone should sound from one speaker.

NOTE: Make sure the volume is set to a normal or slightly higher than normal volume and set the balance and fader to the center position.

3. Each time you press the SKIP button, the test moves to the next speaker in the order listed.









4. The speaker check mode ends when you turn the audio unit off or turn the ignition switch to LOCK (0).

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.
- The ANC function is not supported for 2-door M/T models.

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

NOTE: Make sure the audio system is turned off.

2. Push and hold the No. 1 and No. 6 buttons. While holding the buttons, push the VOL PUSH PWR knob to ON.






3. Press the No. 1 button, 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 item.
- 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 number 1 thru 10, when the system is working properly, the speaker makes a low-frequency hum (50 Hz) for between five seconds and one minute.
- For test items number 1 thru 10, when there is a problem with the system, the low-frequency hum ends within 5 seconds.
- The check mode automatically cancels one minute from the time you begin each test.
- In test number 11, the test changes the ANC continually from ON to OFF.
- The check mode ends when you turn the ignition switch to LOCK (0)) or if you start the engine because starting the engine momentarily cutoff the power to the audio unit.
- The ANC self check is designed to test the ANC system when the engine is running and when it is off. Unfortunately turning the key from ON (II) to START (III) cancels the self diagnostic.
- For test numbers 2,7 and 11, make sure the engine is running.
- For test numbers 9 and 10, make sure the engine is stopped.
- For test numbers 1,3, 4, 5, 6, and 8 the engine can be running or stopped.
Since you can't start and stop the engine while you are in the self diagnostic mode, if you wanted to do test 7 and 10, you need to do the self diagnostic twice, once with the engine running and again with the engine off to test the system properly.









4. The self-diagnostic function ends when the audio system is turned off, or the ignition switch is turned to LOCK (0).

Communication Connection 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). Turn the audio unit off.
2. 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.
3. Press the No. 6 button, and the Communication connection check mode begins.






4. Each time you press the No. 6 button, the communication connection state is displayed in the following order.

NOTE: If the audio-HVAC subdisplay or the audio-HVAC display is blank in all headlight positions, or blank only when the headlights are turned on, check for B-CAN DTCs.






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