#
ON-BOARD DIAGNOSTIC SYSTEM FUNCTION

BHE092066900T05

## 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:
  – Supplier code (indicates manufacturer)
  – Part number (indicates malfunctioning part)
  – Error code (indicates malfunction description)
  • Refer to the Service Section for the display method.

1 | Supplier code
2 | Error code
3 | Part number

Supplier code | Supplier name
--- | ---
1 | FMS Audio
2 | Panasonic
3 | Clarion

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

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
20 | Insufficient power supply
22 | Tuner error

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

## 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 of information display 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 condition of the speakers and wiring harness between the base unit and each speaker.
  1. Left front door speaker and tweeter
  2. Right front door speaker and tweeter
  3. Right rear door speaker and woofer
  4. Left rear door speaker and woofer

### 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).

### Audio amplifier (external)

  • The diagnostic assist function displays the output state of the audio amplifier operating signal to determine condition of the audio amplifier, base unit, and wiring harness between the base unit and audio amplifier.

1 | Audio amplifier operating signal is output
2 | Audio amplifier operating signal is not output