NOTE:
“iPod” is a registered trademark of Apple Inc. in the United States and other countries.
The audio system has an on-board diagnostic function and diagnostic assist function to facilitate audio system diagnosis.
The on-board diagnostic function consists of the following functions: A malfunction detection function, which detects overall malfunctions in the audio system-related parts; a memory function, which stores detected DTCs; and a display function, which indicates system malfunctions via a DTC display.
There are two methods for DTC output and clearing; one using the Mazda Modular Diagnostic System (M-MDS) and one which does not use it. Because the DTCs differ depending on whether the M-MDS is used or not, use both methods. (with color LCD)
The diagnostic assist function is a function for forcibly operating audio system related parts to verify their connection condition and operation status. In addition, the specifications for the audio system related parts are displayed in the audio display to enable their verification.
Detects malfunctions in the audio system.
If the audio unit detects a malfunction in the audio system, a maximum of 3 DTCs are recorded in the audio unit. If the audio unit has already stored 3 DTCs (without color LCD)/20 DTCs (with color LCD) and detects another malfunction, it clears the oldest DTC and stores the new DTC.
DTCs stored in the audio unit are cleared if the negative battery cable is disconnected (if backup power is interrupted).
Mazda Modular Diagnostic System (M-MDS) not used
To display DTCs in the audio unit 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 DTCs consist of the following:
Supplier code (supplier name)
Device code (malfunction location)
Error code (malfunction contents)
| 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 |
| 28 | Auxiliary jack/USB port |
| 29 | iPod |
| Error code | Malfunction contents |
| 01 | Mechanical malfunction |
| 02 | Servo malfunction |
| 07 | Poor data read-outs |
| 10 | BUS line (communication line) error |
| 11 | CAN 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 and Bluetooth system (hands-free telephone (HF/TEL) system) is initiated. A maximum of 20 DTCs detected by the malfunction diagnostics are displayed. Refer the Workshop Manual for the DTC inspection procedure.
| 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) |
||||||
| B1022:07 | —*2 | — | Audio unit internal malfunction | — | — | C, D | × |
| B116A:13 | —*2 | — | Open circuit in microphone circuit | — | — | C, D | — |
| B1188:64 | 10:Er07 | — | Audio unit internal malfunction | — | — | C, D | × |
| B1A89:13 | 11:Er03 | — | Communication error between SIRIUS satellite radio unit and SIRIUS satellite radio antenna | — | — | C, D | × |
| B1D19:71 | 10:Er02 | — | Audio unit internal malfunction | — | — | C, D | × |
| B1D19:79 | 10:Er01 | — | Audio unit internal malfunction | — | — | C, D | × |
| B1D19:96 | 10:Er10 | — | Audio unit internal malfunction | — | — | C, D | × |
| U0010:88 | 16:Er12 | — | CAN system communication error | — | — | C, D | × |
| U0142:00 | —*2 | — | Rear body control module (RBCM) communication error | — | — | C, D | × |
| U0155:00 | —*2 | — | Instrument cluster communication error | — | — | C, D | × |
| U0193:00 | 11:Er01 | — | Communication error to SIRIUS satellite radio unit | — | — | C, D | — |
| U0197:00 | —*2 | — | Communication error with Bluetooth unit | — | — | C, D | — |
| U2300:54 | —*2 | — | Configuration error (data not received) | — | — | C, D | × |
| U2300:55 | —*2 | — | Configuration error ( not configured) | — | — | C, D | × |
| U2300:56 | —*2 | — | Configuration error (Ineffective/ non-interchangeable data read) | — | — | C, D | × |
| U3000:04 | 09:Er22 | — | Audio unit internal malfunction | × | — | C, D | × |
| U3000:09 | 09:Er21 | — | Audio unit internal malfunction | × | — | C, D | × |
| U3003:16 | 09:Er20 | — | Voltage decrease input from battery | — | — | C, D | × |
| — | — | — | DTCs not stored | — | — | — | — |
| DTC | Security indicator light | Description | Fail-safe | Drive cycle | Memory function |
| 09:Er20 | — | Voltage decrease input from battery | — | — | × |
| 09:Er21 | — | Audio unit internal malfunction | × | — | × |
| 09:Er22 | — | Audio unit internal malfunction | × | — | × |
| 10:Er01 | — | Audio unit internal malfunction | — | — | × |
| 10:Er02 | — | Audio unit internal malfunction | — | — | × |
| 10:Er07 | — | Audio unit internal malfunction | — | — | × |
| 10:Er10 | — | Audio unit internal malfunction | — | — | × |
| 28:Er01 | — | Poor connection with exterior input unit, or read error | — | — | × |
| 29:Er01 | — | Audio unit internal malfunction, or iPod malfunction | — | — | × |
| No Err | — | DTCs not stored | — | — | — |
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.
The status byte is the two digits (two digits after hyphen (-)) after the 7-digit DTC.
The status byte is a code which indicates the pending code, current/past malfunction status, or warning illumination status.
The status byte can be read by performing a CMDTC self-test using the Mazda Modular Diagnostic System (M-MDS).
For details on the status byte, refer to the explanation on the Mazda Modular Diagnostic System (M-MDS) when reading the DTC.
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.
All characters are displayed in the audio unit display to enable examination of the display. (Without color LCD)
By touching the audio unit display, the display color can be changed for color verification and display examination. (with color LCD)
Activates a buzzer sound when a switch is operated and examines each of the switches.
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), tweeter (LH) and front center speaker, front side speaker (LH)
Front door speaker (RH), tweeter (RH) and front center speaker, front side speaker (RH)
Rear door speaker (RH) and rear speaker
Rear door speaker (LH) and rear speaker
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)
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).
Displays the rotation direction of the operated dial switch in the audio unit display for examination of each switch.
Displays the audio amplifier specifications on the audio unit display to verify the specifications.
Activates AUTO-M and displays the radio reception conditions in the audio unit display for examination of the radio unit.
Displays inspection results in the audio unit and verifies whether a malfunction is audio unit or CD related.
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
Commander switch connection condition
Connection condition of voice recognition-use microphone
Car-navigation unit connection condition
GPS antenna connection condition
The car-navigation unit, Bluetooth unit and rear mount camera connection information stored in the audio unit can be cleared.