ON-BOARD DIAGNOSTIC SYSTEM FUNCTION [AUDIO SYSTEM]SM1935519
ON-BOARD DIAGNOSTIC SYSTEM FUNCTION [AUDIO SYSTEM]

id0920001018a1


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 3 DTCs are recorded in the audio unit. If three 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.
• DTCs stored in the audio unit are cleared if the negative battery cable is disconnected (if backup power is interrupted).


Display function

Without Using Mazda Modular Diagnostic System (M-MDS) (On-board Diagnostic Test Mode)
• To display DTCs on the multi information 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:
― Supplier code (indicates manufacturer)
am3uun00000952
― 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

Parts name
09
Audio unit
10
MP3/WMA (windows media audio) applicable CD player
16
CAN system
17
CAN system
21
Audio panel
22
MP3/WMA (windows media audio) applicable CD changer
23
Audio amplifier
26
Bluetooth unit

Error code

Malfunction description
01
Internal mechanism error
02
Servo mechanism error
03
AudioPilot ®2 microphone or speaker error
07
Disc reading error
10
Bus line (communication line) error
11
CAN line (communication line) error
12
CAN line (communication line) error
19
Communication error between audio panel
20
Insufficient power supply
21
Amplifier related circuit
22
Tuner error
23
Abnormally high temperature and excess-voltage
81
CAN line (communication line) error
82
Microphone related circuit
83
Microphone related circuit
84
Microphone related circuit
85
Steering switch related circuit
86
Internal mechanism 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 tue Bluetooth system (hands-free telephone (HF/TEL system) is initiated. A maximum of 10 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.
acxuun00000973

DTC table

DTC

Detection condition

Mazda Modular Diagnostic System (M-MDS) display

Multi information display

(On-board diagnostic test mode)
B1022:07
21:Er19
Audio unit internal malfunction
B1134:23
26:Er85
Steering switch circuit malfunction
B116A:12
26:Er82
Microphone circuit malfunction
B116A:13
26:Er84
Microphone circuit malfunction
B116A:16
26:Er83
Microphone circuit malfunction
B116A:44
26:Er86
Bluetooth unit internal malfunction
B1188:64
10:Er07, 22:Er07
Audio unit internal malfunction
B1238:49
23:Er03
Audio amplifier circuit malfunction
B1238:98
23:Er23
Audio amplifier internal malfunction
B1D19:71
10:ER02, 22:Er02
Audio unit internal malfunction
B1D19:79
10:Er01, 22:Er01
Audio unit internal malfunction
B1D19:96
10:Er10, 22:Er10
Audio unit internal malfunction
U0010:88
16:Er12
CAN system communication error
U0155:00
17:Er11
Communication error to instrument cluster
U0156:00
—
Communication error to multi information display
U0186:00
23:Er11
CAN system communication error
U0197:00
—
Communication error to Bluetooth unit
U0423:68
—
Invalid date received from Instrument cluster
U0498:68
26:Er81
CAN system communication error
U3000:04
09:Er22
Audio unit internal malfunction
U3000:09
09:Er21
Audio unit internal malfunction or audio unit protection function operates
U3003:16
09:Er20
Audio unit power supply voltage is low
—
No Err
DTC is not recorded.


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 multi information display to enable their verification. Refer to the Workshop Manual for the diagnostic assist function activation procedure.
• The Mazda modular diagnostic system (M-MDS) can be used for a speaker inspection and radio reception condition inspection instead of using the diagnostic assist function. Refer to the Workshop Manual for the inspection procedure.

Switch inspection

• Activates a buzzer sound when a switch is operated and examines each of the switches.
acxuun00000974


Speaker inspection

• Verifies that the speakers output sound in the following order and examines the speakers and wiring harness between the audio unit and speaker.
Without Bose ®
― Front door speaker (LH)
― Front door speaker (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)
― Rear door speaker (RH)
― Rear speaker (RH)
― Rear speaker (LH)
― Rear door speaker (LH)


Radio reception condition inspection

• The diagnostic assist function displays the radio reception condition in 10 levels (0—9) to assist in determining the condition of the center roof antenna, antenna feeders, and audio unit (tuner).
acxuun00000975


Antenna control condition inspection

• The diagnostic assist function displays the output state of the antenna amplifier power supply to determine the condition of the antenna amplifier, audio unit, and wiring harness between the audio unit and antenna amplifier.
am3uun00000956


Audio amplifier specification inspection

• Displays the audio amplifier specification on the multi information display to verify its specification.
am3uun00000959


Dial inspection

• Displays the dial switch operation direction on the multi information display to examine the integrity of the dial.
am3uun00000958