ON-BOARD DIAGNOSTIC SYSTEM FUNCTION [AUDIO SYSTEM]

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Self-diagnostic Function

Malfunction detection function

  • Detects overall malfunctions in the audio system-related parts.

Memory function

  • If the audio unit detects a malfunction in the audio system, a maximum of 20 DTCs are recorded in the audio unit. If 20 DTCs have already been stored and an additional malfunction is detected, the oldest DTC of the 3 already stored is cleared and it is replaced with the DTC for the most current malfunction.

Display function

  Without Using Mazda Modular Diagnostic System (M-MDS) (On-board Diagnostic Test Mode)
    • To display DTCs on the LCD display that have been recorded in the memory function, activate the on-board diagnostic function by operating the audio unit. Refer to the Workshop Manual for the activation procedure of the on-board diagnostic function.
    The DTC consists of the following codes:
      ― Manufacture code (indicates manufacturer)

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      ― Device code (indicates malfunctioning part)
      ― Error code (indicates malfunction description)

Supplier code | Supplier name
--- | ---
01 | SANYO Automedia
02 | Panasonic
03 | Clarion
04 | Pioneer
05 | VISTEON

Device code | Device name
--- | ---
09 | Audio unit
10 | AM/FM tuner/MP3/WMA (Windows Media Audio)/AAC (Advanced Audio Coding) applicable CD player
16 | CAN system
26 | Bluetooth unit

Error code | Malfunction description
--- | ---
01 | Internal mechanism error
02 | Servo mechanism error
07 | Disc reading error
10 | BUS line (communication line) error
12 | CAN line (communication line) error
20 | Insufficient power supply
21 | Amplifier related circuit
22 | Tuner error

  With Using Mazda Modular Diagnostic System (M-MDS)

  • When a DTC inspection is performed using the Mazda modular diagnostic system (M-MDS), the malfunction diagnostics for the audio system is initiated. A maximum of 5 DTCs detected by the malfunction diagnostics are displayed. Refer the Workshop Manual for the DTC inspection procedure.
    ― DTC 7-digit code definition
      ― When related systems or components have failed, the CM stores the DTC of the malfunctioning part in the CM memory, and allows for the retrieval of the store data using scanning tool when necessary. The DTCs are indicated using seven digits. Each digit indicates the following.

      ac9wzn00000952

DTC table

DTC No. | Security indicator light | Description | Fail-safe | Drive cycle | Self-test type*1 | Memory function
--- | --- | --- | --- | --- | --- | ---
Mazda Modular Diagnostic System (M-MDS) display | Information display (On-board diagnostic test mode)
B1188:64 | 10:Er07 | — | Audio unit internal malfunction | — | — | C | ×
B1D19:71 | 10:Er02 | — | Audio unit internal malfunction | — | — | C | ×
B1D19:79 | 10:Er01 | — | Audio unit internal malfunction | — | — | C | ×
B1D19:96 | 10:Er10 | — | Audio unit internal malfunction | — | — | C | ×
U0010:88 | —*2 | — | Audio unit internal malfunction | — | — | C | ×
U1022:07 | 16:Er12 | — | CAN system communication error | — | — | C | ×
U0155:00 | —*2 | — | Instrument cluster communication error | — | — | C, D | ×
U0197:00 | —*2 | — | Communication error with audio unit | — | — | D | ×
U3000:04 | 09:Er22 | — | Audio unit internal malfunction | — | — | C | ×
U3000:09 | 09:Er21 | — | Audio unit internal malfunction | × | — | C | ×
U3003:16 | 09:Er20 | — | Voltage decrease input from battery | × | — | C | ×
— | — | — | DTCs not stored | — | — | — | —

*1 :C: CMDTC self test, D: ODDTC self test
*2 :It is not displayed in the audio display because the on-board diagnostic test mode is not available.

Diagnostic Assist Function

• The audio system related parts are forcibly operated to enable verification of the connection condition and operation status of the audio system related parts. In addition, the specifications for the audio system related parts are displayed in the information display or LCD display to enable their verification. Refer to the Workshop Manual for the diagnostic assist function activation procedure.
• The audio system related parts are forcibly operated to enable verification of the connection condition and operation status of the audio system related parts.In addition, the specifications for the audio system related parts are displayed in the information display to enable their verification. Refer to the Workshop Manual for the diagnostic assist function activation procedure.

Display inspection

  • By touching the audio unit display, the display color can be changed for color verification and display examination.

Button Inspection

  • Activates a buzzer sound when a switch is operated and examines each of the switches.

Speaker Inspection

  • Verifies that the speakers output sound in the following order and examines each speaker or the wiring harness between the audio unit and each speaker.
  Without Bose®
    ― Front door speaker (LH) and tweeter (LH)
    ― Front door speaker (RH) and tweeter (RH)
    ― Rear door speaker (RH)
    ― Rear door speaker (LH)
  With Bose®
    ― Front door speaker (LH)
    ― Front speaker (LH)
    ― Center speaker
    ― Front door speaker (RH)
    ― Front speaker (RH)
    ― Base-box
    ― Rear door speaker (RH)
    ― Rear speaker (RH)
    ― Base-box
    ― Rear door speaker (LH)
    ― Rear speaker (LH)

Radio Reception Condition Inspection

  • Displays the radio reception status on the audio unit display and examines the center roof antenna, antenna feeder, and audio unit (tuner). (Display example when receiving AM 522kHz)

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Antenna control inspection

  • Displays the power supply output status to the center roof antenna to the audio unit display for examination of the center roof antenna, audio unit and wiring harness (between audio unit and center roof antenna).

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Dial inspection

  • Displays the rotation direction of the operated dial switch in the audio unit display for examination of each switch.

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Audio amplifier specification verification.

  • Displays the audio amplifier specifications on the audio unit display to verify the specifications.

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Vehicle/NAVI signal verification

  • Displays the following signal conditions, the vehicle speed, and connection conditions on the audio unit display and verifies the vehicle and NAVI signals.
    ― TNS signal
    ― Reverse signal
    ― Parking brake signal
    ― Vehicle speed
    ― Steering switch connection condition
    ― Connection condition of voice recognition-use microphone
    ― Car-navigation unit connection condition
    ― GPS antenna connection condition

Exterior device connection information clearing

  • The car-navigation unit, Bluetooth unit and rear mount camera connection information stored in the audio unit can be cleared.

Gateway signal verification

  • Displays the information directed at the vehicle HS-CAN in the audio unit display, and verifies if the vehicle information in the audio unit arrives correctly.