#
DIAGNOSTIC ASSIST FUNCTION

BHE090266900W26

## Structural View

BUTTONS

1 | Hazard warning switch
2 | SET button
3 | CLK button
4 | FM1/2 button
5 | AM button
6 | CD button
7 | TAPE/MD button
8 | DISP button
9 | AMB button
10 | LOAD button
11 | EJECT button
12 | SEEK UP button
13 | SEEK DOWN button
14 | Preset button "1"
15 | Preset button "2"
16 | Preset button "3"
17 | POWER/VOLUME button
18 | Preset button "4"
19 | Preset button "5"
20 | Preset button "6"
21 | SCAN (upper) button (without RDS)
22 | SCAN (lower) button (without RDS)
23 | TUNE AUTO-M button
24 | TEXT AUDIO CONT button
25 | TA button (with RDS)
26 | PTY button (with RDS)
27 | AF button (with RDS)

## LCD Inspection

1. With the audio power on, press the POWER button and simultaneously press the SEEK button (upper) for approx. 1 s.

2. Inspect according to the following table:

INSPECTION | DISPLAY | ACTION
--- | --- | ---
Start the LCD inspection mode. |  | The characters displayed on the LCD are not truncated or faint. | The LCD is normal.
Except above | Replace the base unit.

3. Turn the audio off or the ignition switch to the LOCK position to stop the diagnostic assist function.

## Button Inspection

1. With the audio power on, press the POWER button and simultaneously press the CLOCK button for approx. 1 s.

2. Inspect according to the following table:

INSPECTION | DISPLAY | ACTION
--- | --- | ---
• Start the button inspection mode. • Press all buttons. | - | The buzzer sounds. | The button is normal.
The buzzer does not sound. | Replace the base unit.

3. Turn the audio off or the ignition switch to the LOCK position to stop the diagnostic assist function.

## Speaker Inspection

1. With the audio power on, press the POWER button and simultaneously press the AUTO-M button for approx. 1 s.

2. Inspect according to the following table:

INSPECTION | DISPLAY | ACTION
--- | --- | ---
• Start the speaker inspection mode. • Does each speaker output sound in the following order? 1. Front passenger-side door speaker and tweeter 2. Front driver-side door speaker and tweeter 3. Driver-side rear speaker 4. Passenger-side rear speaker | - | Yes | Speakers, and wiring harness between the base unit and speakers are normal
No | • Inspect the following parts. – Malfunctioning speaker – Wiring harness between base unit and malfunctioning speaker

3. Turn the audio off or the ignition switch to the LOCK position to stop the diagnostic assist function.

## Radio Reception Condition Inspection

1. With the audio power on, press the POWER button and simultaneously press the PRESET 2 button for approx. 1 s.

2. Inspect according to the following table:

  Caution

  • Even if the system is normal, radio reception may be difficult depending on where the system is inspected (indoors/outdoors, or conditions at the location).Before inspecting the system, verify that radio reception is adequate.
  • When inspecting, select a frequency band (radio station) with the best reception.

INSPECTION | DISPLAY | ACTION
--- | --- | ---
Start the radio reception condition inspection mode. |  | Antenna, antenna feeder and base unit are normal
| Change the frequency (radio station) and inspect again.
| Inspect the antenna and antenna feeder. • If either the antenna or the antenna feeder is not normal, replace the malfunctioning part. • If the antenna and antenna feeder are normal, replace the base unit.

3. Turn the audio off or the ignition switch to the LOCK position to stop the diagnostic assist function.