ON-BOARD DIAGNOSTIC SYSTEM FUNCTION [AUDIO (TOUCH PANEL TYPE AUDIO)]

id0920001018a7

Self-diagnostic Function

Malfunction detection function

•  The malfunction detection function detects malfunctions occurring in the system.

Memory function

•  The memory function detects a malfunction, changes it to a DTC, and stores it in the memory. The memory can store a maximum of twenty DTCs. If another malfunction is detected when twenty DTCs are already stored, the memory function clears the oldest DTC and stores the new one.

•  Once a DTC is stored, it can only be cleared by the designated procedure; not by turning the ignition switch to the LOCK position or disconnecting the negative battery cable. The procedure is mentioned in the Service Section.

•  An error history in which 30 days have elapsed from the occurrence is automatically erased.

Display function

•  When the self-diagnostic function is activated, DTCs and the time when errors occur which have been stored by the memory function and displayed on the audio panel screen.

•  The DTC consists of the following codes and numbers:

―  Error code (indicates malfunction description)

―  Device code (indicates malfunctioning part)

―  Time information (indicates date and time when malfunction occurred)

•  Refer to the Service Section for the display method.

ac9uun00000417

Device code	Parts name
03	CD player
09	Base unit
16	CAN system
17	CAN communication line
21	Audio panel
22	MP3 applicable CD changer
23	Audio amplifier
24	Audio panel (Touch panel type)

Error code	Malfunction description
01	Internal mechanism error
02	Servo mechanism error
03	Mechanism stuck
07	Disc reading error
08	Blank media
10	BUS line (communication line) error
11	CAN line (communication line) error
12	CAN line (communication line) error
17	Incorrect Combination
18	Incorrect Combination
19	Communication line
20	Insufficient power supply
21	Amplifier related circuit
22	Tuner error
23	Abnormally high temperature and excess-voltage

Screen display		Malfunction location
DTC	Output signal
03: Er01	—	CD player system
03: Er02	CHECK CD	CD player system
03: Er07	CHECK CD	CD player system
03: Er10	—	CD player communication circuit system
09: Er20	—	Power supply circuit to base unit
09: Er21	—	•  Speaker or speaker circuit •  Base unit (peripheral circuit for power amplifier)
09: Er22	—	Base unit (peripheral circuit for tuner)
16: Er12	—	CAN system
17: Er11	—	CAN system
21: Er17	—	Audio panel system
21: Er18	—	Audio panel system
21: Er19	—	Audio panel system
22: Er01	—	MP3 applicable CD changer system
22: Er02	CHECK CD	MP3 applicable CD changer system
22: Er07	CHECK CD	MP3 applicable CD changer system
22: Er10	—	MP3 applicable CD changer communication circuit system
23: Er03	—	Audio amplifier
23: Er11	—	Audio amplifier
23: Er23	—	Audio amplifier
24: Er01	—	Audio panel open/close mechanism
24: Er19	—	Connectors between base unit and audio panel
no Err	—	No DTCs stored

Diagnostic Assist Function

Information display

•  The diagnostic assist function illuminates all characters in the information display to check for truncated or faint characters.

ac9uun00000508

Audio panel screen

•  Switches the display color in the specified order and examines the audio panel.

Speaker

•  The diagnostic assist function outputs sound to the speakers in the specified order to determine the operating condition of the speakers and wiring harnesses between the base unit and each speaker.

Radio

•  The diagnostic assist function displays the radio reception condition in 10 levels (0-9) to assist in determining the condition of the antenna, antenna feeders, and base unit (tuner).

acxuun00000371

Antenna control condition

•  The diagnostic assist function displays the output state of the antenna amplifier power supply to determine the condition of the antenna amplifier, base unit, and wiring harness between the base unit and antenna amplifier.

acxuun00000573