#
ON-BOARD DIAGNOSTIC SYSTEM FUNCTION

id092000101800

## Self-diagnostic Function

### Malfunction detection function

  • The malfunction detection section 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 three DTCs. If another malfunction is detected when three 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.

### Display function

  • When the self-diagnostic function is activated, the information display displays the DTC stored in the memory.
  • The DTC consists of the following codes and numbers:
  - Part number (indicates malfunctioning part)
  - Error code (indicates malfunction description)
  - Supplier code (indicates manufacturer)
  • Refer to the Service Section for the display method.

Supplier code | Supplier name
--- | ---
1 | SANYO Automedia
2 | Panasonic
3 | Clarion
4 | PIONEER

Parts number | Parts name
--- | ---
00 | Cassette deck
03 | CD player
06 | CD changer (upper module)
07 | MD player
09 | Base unit
10 | MP3 applicable CD player

Error code | Malfunction description
--- | ---
01 | Internal mechanism error
02 | Servo mechanism error
03 | Mechanism stuck
07 | Disc reading error
08 | Blank media
10, 02 | BUS line (communication line) error
20 | Insufficient power supply
22 | Tuner error

Screen display | Malfunction location
--- | ---
DTC | Output signal
09: Er22 | - | Base unit (peripheral circuit)
09: Er20 | - | Power supply circuit of base unit
00: Er10 | - | Cassette deck-base unit communication line
03: Er10 | - | CD player-base unit communication line
06: Er10 | - | CD changer (upper module)-base unit communication line
07: Er10 | - | MD player-base unit communication line
03: Er01 | - | CD player
03: Er02 | CHECK CD | CD player
03: Er07 | CHECK CD | CD player
00: Er01 | - | Cassette deck
00: Er03 | - | Cassette deck
00: Er04 | CHECK TAPE | Cassette tape
06: Er01 | - | CD changer (upper module)
06: Er02 | CHECK CD | CD changer (upper module)
06: Er07 | CHECK CD | CD changer (upper module)
07: Er01 | - | MD player
07: Er02 | CHECK MD | MD player
07: Er07 | CHECK MD | MD player
07: Er08 | CHECK MD | MD
10: Er01, 02: Er01 | - | MP3 applicable CD player
10: Er02, 02: Er02 | CHECK CD | MP3 applicable CD player
10: Er07, 02: Er07 | CHECK CD | MP3 applicable CD player
no Err | - | No stored DTCs

## Diagnostic Assist Function

• The diagnostic assist function displays the operating condition of the following functions (components) and forces them to operate in order to examine whether they are malfunctioning or not.
• For the start procedure of each mode, refer to the Service Section.

### LCD

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

### Switch

  • The diagnostic assist function sounds the buzzer when the switches are pressed to check the switches.

### Speaker

  • The diagnostic assist function outputs sound to the speakers in the following order to determine the condition of the speakers and wiring harness between the base unit and each speaker.
  1. Front passenger-side door speaker
  2. Front driver-side door speaker
  3. Right rear door speaker
  4. Left rear door 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).