ON-BOARD DIAGNOSTIC [ENTERTAINMENT SYSTEM (WITH CENTER DISPLAY)]

id0920zz1101y8

Note

• “iPod” is a registered trademark of Apple Inc.

Outline

• The entertainment system has an on-board diagnostic function and diagnostic assist function to facilitate system diagnosis.

On-board diagnostic function

• The on-board diagnostic function consists of the following functions:

― A malfunction detection function, which detects overall malfunctions in the entertainment system-related parts (with center display)

― A memory function, which stores detected DTCs

― A display function, which indicates system malfunctions via a DTC display.

Malfunction detection function

• Detects malfunctions in the entertainment system.

Memory function

• If a malfunction is detected in the entertainment system, the connectivity master unit (CMU) stores a DTC.

Display Function

Mazda Modular Diagnostic System (M-MDS) not used

• To display DTCs on the center display that have been recorded in the memory function, activate the on-board diagnostic function by operating the center display or commander switch.Refer to the Workshop Manual for the activation procedure of the on-board diagnostic function.

Mazda Modular Diagnostic System (M-MDS) used

• When DTC inspection is performed using the Mazda modular diagnostic system (M-MDS), the audio system malfunction diagnosis begins. Refer to the Workshop Manual for the DTC troubleshooting procedure.

DTC table

×: Applicable

—: Not applicable

DTC No.	Diagnostic assist code^*1	Warning/indicator lights	Description	Fail-safe function	Drive cycle	Self test type^*2	Memory function
B100E:87^*3	03/04	—	Communication error with DVD/CD player	—	—	C, D	×
B1087:87	03/04	—	Communication error with commander switch	—	—	C, D	×
B108E:04	03/04	—	Center display internal malfunction	—	—	C, D	×
B108E:06	03/04	—	HDCP authorization error	—	—	C, D	×
B108E:1C	03/04	—	Low power supply voltage input to center display	×	—	C, D	×
B108E:87	03/04	—	Center display circuit malfunction	—	—	C, D	×
B116A:11	03/04	—	Microphone circuit malfunction	—	—	C, D	×
B116A:12	03/04	—	Microphone circuit malfunction	—	—	C, D	×
B116A:92	03/04	—	Microphone circuit malfunction	—	—	C, D	×
B119F:11	03/04	—	GPS antenna circuit malfunction	—	—	C, D	×
B119F:13	03/04	—	GPS antenna circuit malfunction	—	—	C, D	×
B119F:1D	03/04	—	GPS antenna circuit malfunction	—	—	C, D	×
B119F:92	03/04	—	GPS antenna circuit malfunction	—	—	C, D	×
B11BA:11	03/04	—	Steering switch circuit malfunction	—	—	C, D	×
B11BA:15	03/04	—	Steering switch circuit malfunction	—	—	C, D	×
B1201:11	03/04	—	Steering switch circuit malfunction	—	—	C, D	×
B1201:15	03/04	—	Steering switch circuit malfunction	—	—	C, D	×
B1238:01	03/05	—	Without Bose^® • Speaker circuit malfunction With Bose^® • Audio amplifier circuit malfunction	—	—	C, D	×
B1238:16	03/05	—	Tuner and amp unit (TAU) low power supply voltage input	—	—	C, D	×
B1238:87	03/04	—	RDS traffic information transfer circuit malfunction	—	—	C, D	×
B1252:09	03/04	—	Auxiliary jack/USB port/SD card slot hub circuit malfunction	—	—	C, D	×
B1252:1D	03/04	—	Auxiliary jack/USB port/SD card slot hub circuit malfunction	—	—	C, D	×
B1252:87	03/04	—	Communication error with auxiliary jack/USB port/SD card slot hub	—	—	C, D	×
B12BD:11^*3	03/04	—	Rear mount camera circuit malfunction	—	—	C, D	×
B12BD:87^*4	03/04	—	Rear mount camera transmission error	—	—	C, D	×
B1A89:13^*5	03/05	—	SiriusXM satellite radio antenna feeder malfunction	—	—	C, D	×
B1A89:42^*5	03/05	—	Tuner and amp unit internal malfunction	—	—	C, D	×
B1D19:00^*3	03/06	—	Region code error or parental lock function error	—	—	C, D	×
B1D19:64^*6	03/06	—	Incompatible disc inserted	×	—	C, D	×
B1D19:79^*6	03/06	—	CD player or DVD/CD player disc read error	×	—	C, D	×
B1D19:98^*6	03/06	—	Abnormal CD player or DVD/CD player temperature	×	—	C, D	×
U0001:88	03/04	—	Module communication error (HS-CAN)	—	—	C, D	×
U0028:88	03/04	—	Unit communication error (PRIVATE-CAN)	—	—	C, D	×
U0100:00	03/04	—	Communication error with PCM	—	—	C, D	×
U0101:00^*7	03/04	—	Communication error with TCM	—	—	C, D	×
U0104:00^*8	03/04	—	Communication error with vehicle control module (V/C-module)	—	—	C, D	×
U0121:00	03/04	—	Communication error with ABS HU/CM or DSC HU/CM	—	—	C, D	×
U0131:00	03/04	—	Communication error with EPS control module	—	—	C, D	×
U0140:00	03/04	—	Communication error with front body control module (FBCM)	—	—	C, D	×
U0151:00	03/04	—	Communication error with SAS control module	—	—	C, D	×
U0155:00	03/04	—	Communication error with instrument cluster	—	—	C, D	×
U0182:00^*9	03/04	—	Communication error with AFS control module or auto leveling control module	—	—	C, D	×
U0184:00	03/04	—	Communication error with tuner and amp unit (TAU)	—	—	C, D	×
U0187:00^*6	03/04	—	Communication error with CD player or DVD/CD player	—	—	C, D	×
U0214:00	03/04	—	Communication error with start stop unit	—	—	C, D	×
U0235:00^*10	03/04	—	Communication error with laser sensor	—	—	C, D	×
U023A:00^*11	03/04	—	Communication error with forward sensing camera (FSC)	—	—	C, D	×
U2300:54	03/04	—	Configuration data not received from instrument cluster	—	—	C, D	×
U2300:55	03/04	—	Instrument cluster configuration not implemented	—	—	C, D	×
U3000:42	03/04	—	Connectivity master unit (CMU) internal malfunction (poor data read-outs)	—	—	C, D	×
U3003:16	03/04	—	Low ACC power supply voltage input to connectivity master unit (CMU)	—	—	C, D	×

*1 :The double-digit number indicates the diagnostic assist code with which DTCs can be detected during the DTC inspection using the diagnostic assist function.

*2 :C: CMDTC self test, D:ODDTC self test

*3 :With DVD/CD player

*4 :With rear mount camera

*5 :With SiriusXM satellite radio system

*6 :With CD player or DVD/CD player

*7 :ATX

*8 :With Mazda Radar Cruise Control (MRCC) system

*9 :With AFS or with headlight auto levelling system

*10 :With smart city brake support (SCBS)

*11 :With forward sensing camera (FSC)

Detection condition for the applicable DTC

DTC No.

Description

Fail-safe function

B100E:87^*1

Communication error with DVD/CD player

With the ignition switched ON (engine off or on), the CMU cannot receive a signal from the DVD/CD player.

B1087:87

Communication error with commander switch

The CMU cannot receive a LIN signal from the commander switch for 5 s or more with the ignition switched ACC or ON (engine off or on).

B108E:04

Center display internal malfunction

The CMU detected a center display internal malfunction for 5 s or more with the ignition switched ON (engine off or on).

B108E:06

HDCP authorization error

The CMU detected an HDCP authorization error with the ignition switched ON (engine off or on).

B108E:1C

Low power supply voltage input to center display

•  The CMU detected any of the following conditions for 5 s or more with the ignition switched ON (engine off or on).

―  TFT LCD driver voltage 3.8 V or less

―  LED drive voltage 14.0 V or less

―  Touch panel IC voltage 3.9 V or less

B108E:87

Center display circuit malfunction

The CMU cannot receive a signal from the center display for 5 s or more with the ignition switched ON (engine off or on).

B116A:11

Microphone circuit malfunction

The CMU detected a short to ground in the microphone circuit for 5 s or more with the ignition switched ON (engine off or on).

B116A:12

Microphone circuit malfunction

The CMU detected a short to power supply in the microphone circuit for 5 s or more with the ignition switched ON (engine off or on).

B116A:92

Microphone circuit malfunction

The CMU detected microphone circuit voltage of less than 7.7 V or more than 8.6 V with the ignition switched ON (engine off or on).

B119F:11

GPS antenna circuit malfunction

CMU detects GPS antenna circuit voltage of 4.45 V or less with the ignition switched ON (engine off or on).

B119F:13

GPS antenna circuit malfunction

The CMU detects an open circuit in the GPS antenna circuit with the ignition switched ON (engine off or on).

B119F:1D

GPS antenna circuit malfunction

The CMU detects a current value in the GPS antenna circuit of (31 mA or more) with the ignition switched ON (engine off or on).

B119F:92

GPS antenna circuit malfunction

The CMU cannot receive signals from the GPS antenna for 5 s or more with the ignition switched ON (engine off or on).

B11BA:11

Steering switch circuit malfunction

The CMU detected a short to ground in the steering switch circuit for 5 s or more with the ignition switched ON (engine off or on).

B11BA:15

Steering switch circuit malfunction

The CMU detected an open circuit in the steering switch circuit or a short to the power supply for 5 s or more with the ignition switched ON (engine off or on).

B1201:11

Steering switch circuit malfunction

The CMU detected a short to ground in the steering switch circuit for 5 s or more with the ignition switched ON (engine off or on).

B1201:15

Steering switch circuit malfunction

The CMU detected an open circuit in the steering switch circuit or a short to the power supply for 5 s or more with the ignition switched ON (engine off or on).

B1238:01

Without Bose^®

•  Speaker circuit malfunction

With Bose^®

•  Audio amplifier circuit malfunction

Without Bose^®

•  The CMU detected a short to ground or short to power supply in the speaker circuit with the ignition switched ON (engine off or on).

With Bose^®

•  The CMU detected a short to ground or short to power supply in the audio amplifier circuit with the ignition switched ON (engine off or on).

B1238:16

TAU low power supply voltage input

CMU detects power supply circuit voltage for TAU of less than 10 V for 10 s or more with the ignition switched ON (engine off or on).

B1238:87

RDS traffic information transfer circuit malfunction

The CMU detects a communication error in the RDS traffic information transfer circuit for 5 s or more with the ignition switched ON (engine off or on).

B1252:09

Auxiliary jack/USB port/SD card slot hub circuit malfunction

With the ignition switched ON (engine off or on), the CMU detects a voltage value for the auxiliary jack/USB port/SD card slot hub circuit of within 4.8 V or exceeding 5.2 V.

B1252:1D

Auxiliary jack/USB port/SD card slot hub circuit malfunction

The CMU detects over-current (550 mA or more) in auxiliary jack/USB port/SD card slot hub circuit with the ignition switched ON (engine off or on).

B1252:87

Communication error with auxiliary jack/USB port/SD card slot hub

With the ignition switched ON (engine off or on), the CMU cannot receive a signal from the auxiliary jack/USB port/SD card slot hub.

B12BD:11^*1

Rear mount camera circuit malfunction

The CMU detects a voltage value for the rear mount camera circuit of within 5.8 V or exceeding 6.2 V with the ignition switched ON (engine off or on).

B12BD:87^*2

Rear mount camera transmission error

The CMU cannot receive a signal from the rear mount camera for 5 s or more with the ignition switched ON (engine off or on).

B1A89:13^*3

SiriusXM satellite radio antenna feeder malfunction

The connectivity master unit detects an open circuit in SiriusXM satellite radio antenna feeder with the ignition switched ON (engine off or on).

B1A89:42^*3

Tuner and amp unit internal malfunction

The connectivity master unit detects an XM module malfunction in the tuner and amp unit with the ignition switched ON (engine off or on).

B1D19:00^*1

Region code error or parental lock function error

The CMU detects a region code error or parental lock function error with the ignition switched ON (engine off or on).

B1D19:64^*4

Incompatible disc inserted

With the ignition switched ON (engine on or off), the CMU detects a disc having a data format that is incompatible with the CD player or DVD/CD player.

B1D19:79^*4

CD player or DVD/CD player disc read error

With the ignition switched ON (engine off or on), the CMU detects a disc read error.

B1D19:98^*4

Abnormal CD player or DVD/CD player temperature

With the ignition switched ON (engine off or on), the CMU detects an abnormally high temperature condition in the CD player or DVD/CD player.

U0001:88

Module communication error (HS-CAN)

•  With the ignition switched ON (engine off or on), the CMU cannot detect a CAN bus communication line (HS-CAN) signal for 1 s or more.

•  With the ignition switched ON (engine off or on), the CMU detects malfunction in the CAN bus communication line (HS-CAN) 10 times continuously.

U0028:88

Unit communication error (PRIVATE-CAN)

The CMU detects CAN bus communication line (PRIVATE-CAN) malfunction 10 times continuously.

U0100:00

Communication error with PCM

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the PCM for 5 s or more.

U0101:00^*5

Communication error with TCM

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the TCM for 5 s or more.

U0104:00^*6

Communication error with vehicle control module (V/C-module)

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the vehicle control module (V/C-module) for 5 s or more.

U0121:00

Communication error with DSC HU/CM

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the DSC HU/CM for 5 s or more.

U0131:00

Communication error with EPS control module

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the EPS control module for 5 s or more.

U0140:00

Communication error with front body control module (FBCM)

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the front body control module (FBCM) for 5 s or more.

U0151:00

Communication error with SAS control module

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the SAS control module for 5 s or more.

U0155:00

Communication error with instrument cluster

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the instrument cluster for 5 s or more.

U0182:00^*7

Communication error with AFS control module or auto leveling control module

•   With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the AFS control module for 5 s or more.

•  With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the auto leveling control module for 5 s or more.

U0184:00

Communication error with TAU

The CMU cannot receive CAN signal from the TAU for 5 s or more.

U0187:00^*4

Communication error with CD player

The CMU cannot receive CAN signal from the CD player or DVD/CD player for 5 s or more.

U0214:00

Communication error with start stop unit

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the start stop unit for 5 s or more.

U0235:00^*8

Communication error with laser sensor

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the laser sensor for 5 s or more.

U023A:00^*9

Communication error with forward sensing camera (FSC)

With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the forward sensing camera (FSC) for 5 s or more.

U2300:54

Configuration data not received from instrument cluster

The CMU cannot receive the configuration data from the instrument cluster for 30 s or more with the ignition switched ON (engine off or on).

U2300:55

Instrument cluster configuration not implemented

•  The CMU detected any of the following conditions with the ignition switched to ACC or ON (engine off or on).

―  Instrument cluster configuration not read

―  Configuration data cannot be written to CMU memory.

U3000:42

CMU internal malfunction (poor data read-outs)

The CMU cannot read data from the NVRAM in the CMU with the ignition switched to ACC or ON (engine off or on).

U3003:16

Low ACC power supply voltage input to CMU

The CMU detects ACC power supply circuit voltage of 8.0±0.8 V or less for 10 s or more with the ignition switched to ACC or ON (engine off or on).

DTC No.	Description	Fail-safe function
B100E:87^*1	Communication error with DVD/CD player	With the ignition switched ON (engine off or on), the CMU cannot receive a signal from the DVD/CD player.
B1087:87	Communication error with commander switch	The CMU cannot receive a LIN signal from the commander switch for 5 s or more with the ignition switched ACC or ON (engine off or on).
B108E:04	Center display internal malfunction	The CMU detected a center display internal malfunction for 5 s or more with the ignition switched ON (engine off or on).
B108E:06	HDCP authorization error	The CMU detected an HDCP authorization error with the ignition switched ON (engine off or on).
B108E:1C	Low power supply voltage input to center display	• The CMU detected any of the following conditions for 5 s or more with the ignition switched ON (engine off or on). ― TFT LCD driver voltage 3.8 V or less ― LED drive voltage 14.0 V or less ― Touch panel IC voltage 3.9 V or less
B108E:87	Center display circuit malfunction	The CMU cannot receive a signal from the center display for 5 s or more with the ignition switched ON (engine off or on).
B116A:11	Microphone circuit malfunction	The CMU detected a short to ground in the microphone circuit for 5 s or more with the ignition switched ON (engine off or on).
B116A:12	Microphone circuit malfunction	The CMU detected a short to power supply in the microphone circuit for 5 s or more with the ignition switched ON (engine off or on).
B116A:92	Microphone circuit malfunction	The CMU detected microphone circuit voltage of less than 7.7 V or more than 8.6 V with the ignition switched ON (engine off or on).
B119F:11	GPS antenna circuit malfunction	CMU detects GPS antenna circuit voltage of 4.45 V or less with the ignition switched ON (engine off or on).
B119F:13	GPS antenna circuit malfunction	The CMU detects an open circuit in the GPS antenna circuit with the ignition switched ON (engine off or on).
B119F:1D	GPS antenna circuit malfunction	The CMU detects a current value in the GPS antenna circuit of (31 mA or more) with the ignition switched ON (engine off or on).
B119F:92	GPS antenna circuit malfunction	The CMU cannot receive signals from the GPS antenna for 5 s or more with the ignition switched ON (engine off or on).
B11BA:11	Steering switch circuit malfunction	The CMU detected a short to ground in the steering switch circuit for 5 s or more with the ignition switched ON (engine off or on).
B11BA:15	Steering switch circuit malfunction	The CMU detected an open circuit in the steering switch circuit or a short to the power supply for 5 s or more with the ignition switched ON (engine off or on).
B1201:11	Steering switch circuit malfunction	The CMU detected a short to ground in the steering switch circuit for 5 s or more with the ignition switched ON (engine off or on).
B1201:15	Steering switch circuit malfunction	The CMU detected an open circuit in the steering switch circuit or a short to the power supply for 5 s or more with the ignition switched ON (engine off or on).
B1238:01	Without Bose^® • Speaker circuit malfunction With Bose^® • Audio amplifier circuit malfunction	Without Bose^® • The CMU detected a short to ground or short to power supply in the speaker circuit with the ignition switched ON (engine off or on). With Bose^® • The CMU detected a short to ground or short to power supply in the audio amplifier circuit with the ignition switched ON (engine off or on).
B1238:16	TAU low power supply voltage input	CMU detects power supply circuit voltage for TAU of less than 10 V for 10 s or more with the ignition switched ON (engine off or on).
B1238:87	RDS traffic information transfer circuit malfunction	The CMU detects a communication error in the RDS traffic information transfer circuit for 5 s or more with the ignition switched ON (engine off or on).
B1252:09	Auxiliary jack/USB port/SD card slot hub circuit malfunction	With the ignition switched ON (engine off or on), the CMU detects a voltage value for the auxiliary jack/USB port/SD card slot hub circuit of within 4.8 V or exceeding 5.2 V.
B1252:1D	Auxiliary jack/USB port/SD card slot hub circuit malfunction	The CMU detects over-current (550 mA or more) in auxiliary jack/USB port/SD card slot hub circuit with the ignition switched ON (engine off or on).
B1252:87	Communication error with auxiliary jack/USB port/SD card slot hub	With the ignition switched ON (engine off or on), the CMU cannot receive a signal from the auxiliary jack/USB port/SD card slot hub.
B12BD:11^*1	Rear mount camera circuit malfunction	The CMU detects a voltage value for the rear mount camera circuit of within 5.8 V or exceeding 6.2 V with the ignition switched ON (engine off or on).
B12BD:87^*2	Rear mount camera transmission error	The CMU cannot receive a signal from the rear mount camera for 5 s or more with the ignition switched ON (engine off or on).
B1A89:13^*3	SiriusXM satellite radio antenna feeder malfunction	The connectivity master unit detects an open circuit in SiriusXM satellite radio antenna feeder with the ignition switched ON (engine off or on).
B1A89:42^*3	Tuner and amp unit internal malfunction	The connectivity master unit detects an XM module malfunction in the tuner and amp unit with the ignition switched ON (engine off or on).
B1D19:00^*1	Region code error or parental lock function error	The CMU detects a region code error or parental lock function error with the ignition switched ON (engine off or on).
B1D19:64^*4	Incompatible disc inserted	With the ignition switched ON (engine on or off), the CMU detects a disc having a data format that is incompatible with the CD player or DVD/CD player.
B1D19:79^*4	CD player or DVD/CD player disc read error	With the ignition switched ON (engine off or on), the CMU detects a disc read error.
B1D19:98^*4	Abnormal CD player or DVD/CD player temperature	With the ignition switched ON (engine off or on), the CMU detects an abnormally high temperature condition in the CD player or DVD/CD player.
U0001:88	Module communication error (HS-CAN)	• With the ignition switched ON (engine off or on), the CMU cannot detect a CAN bus communication line (HS-CAN) signal for 1 s or more. • With the ignition switched ON (engine off or on), the CMU detects malfunction in the CAN bus communication line (HS-CAN) 10 times continuously.
U0028:88	Unit communication error (PRIVATE-CAN)	The CMU detects CAN bus communication line (PRIVATE-CAN) malfunction 10 times continuously.
U0100:00	Communication error with PCM	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the PCM for 5 s or more.
U0101:00^*5	Communication error with TCM	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the TCM for 5 s or more.
U0104:00^*6	Communication error with vehicle control module (V/C-module)	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the vehicle control module (V/C-module) for 5 s or more.
U0121:00	Communication error with DSC HU/CM	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the DSC HU/CM for 5 s or more.
U0131:00	Communication error with EPS control module	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the EPS control module for 5 s or more.
U0140:00	Communication error with front body control module (FBCM)	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the front body control module (FBCM) for 5 s or more.
U0151:00	Communication error with SAS control module	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the SAS control module for 5 s or more.
U0155:00	Communication error with instrument cluster	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the instrument cluster for 5 s or more.
U0182:00^*7	Communication error with AFS control module or auto leveling control module	• With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the AFS control module for 5 s or more. • With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the auto leveling control module for 5 s or more.
U0184:00	Communication error with TAU	The CMU cannot receive CAN signal from the TAU for 5 s or more.
U0187:00^*4	Communication error with CD player	The CMU cannot receive CAN signal from the CD player or DVD/CD player for 5 s or more.
U0214:00	Communication error with start stop unit	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the start stop unit for 5 s or more.
U0235:00^*8	Communication error with laser sensor	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the laser sensor for 5 s or more.
U023A:00^*9	Communication error with forward sensing camera (FSC)	With the ignition switched ON (engine off or on), the CMU cannot receive a CAN signal from the forward sensing camera (FSC) for 5 s or more.
U2300:54	Configuration data not received from instrument cluster	The CMU cannot receive the configuration data from the instrument cluster for 30 s or more with the ignition switched ON (engine off or on).
U2300:55	Instrument cluster configuration not implemented	• The CMU detected any of the following conditions with the ignition switched to ACC or ON (engine off or on). ― Instrument cluster configuration not read ― Configuration data cannot be written to CMU memory.
U3000:42	CMU internal malfunction (poor data read-outs)	The CMU cannot read data from the NVRAM in the CMU with the ignition switched to ACC or ON (engine off or on).
U3003:16	Low ACC power supply voltage input to CMU	The CMU detects ACC power supply circuit voltage of 8.0±0.8 V or less for 10 s or more with the ignition switched to ACC or ON (engine off or on).

*1 :With DVD/CD player

*2 :With rear mount camera

*3 :With SiriusXM satellite radio system

*4 :With CD player or DVD/CD player

*5 :ATX

*6 :With Mazda Radar Cruise Control (MRCC) system

*7 :With AFS or with headlight auto levelling system

*8 :With smart city brake support (SCBS)

*9 :With forward sensing camera (FSC)

Diagnostic Assist Function

• The diagnostic assist function is a function for forcibly operating entertainment system related parts to verify their connection condition and operation status. In addition, the specifications of the entertainment system related parts are displayed in the center display where they can be verified. Refer to the workshop manual for the diagnostic assist function activation procedure.

Diagnostic assist code list

No.

Center display (diagnostic content)

Function

Content

01

CD Test

CD player or DVD/CD player inspection

The CD player inspection results are displayed in the center display.

02

Clear DTC

DTC clearing

Clears the DTCs.

Note

•  DTC clearing is performed in the following order, and a message is displayed each time to indicate the DTCs are cleared.

―  CMU

―  TAU

―  CD player

03

Read AVC DTC

Inspection of all DTCs related to module

Displays the DTCs of the entertainment system related parts.

Note

•  Detection of DTCs is limited if the ignition is in the ACC position. Refer to the workshop manual for details.

04

Read CMU DTC

DTC inspection for CMU

The CMU DTCs are displayed in the center display.

05

Read TAU DTC

DTC inspection for TAU

The TAU DTCs are displayed in the center display.

06

Read CD DTC

DTC inspection for CD player or DVD/CD player

The CD player DTCs are displayed in the center display.

07

Read DTV DTC

Does not operate due to unavailability of applicable DTC.

08

Software Reset AVC

Do not operate because item is for manufacturer use.

09

Software Version Display (CD)

Software version verification

Displays the CD player software version.

10

Part Number Readout CD/DVD

Part number verification

Displays the CD player part number (first four digits)

21

DVD TEST MODE ENABLE

Do not operate because item is for manufacturer use.

22

DVD TEST MODE DISABLE

Do not operate because item is for manufacturer use.

25

Antenna Continuity Status

Antenna control output condition 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).

Note

•  Even if the system is normal, radio reception may be difficult depending on where the system is inspected (indoors/outdoors, or conditions at the location). Before inspecting the system, verify that radio reception is adequate.

•  When performing the inspection, select the best area for receiving radio frequencies.

26

DTV TEST ON

Do not operate because item is for manufacturer use.

27

DTV TEST OFF

Do not operate because item is for manufacturer use.

53

Software Version Display (CMU)

Software version verification

Displays the CMU (overall entertainment system ) software version.

57

Software Version Display (VIP)

Software version verification

Displays the CMU (overall communication with vehicle) software version.

58

Vehicle Info

Configuration information verification

Displays the following configuration information in the center display.

―  Destination

―  CMU Types

59

CMU Serial Number Readout

Individual number verification

Displays the unique number verification of the CMU in the center display.

61

Vehicle Signal (Unit Status)

Vehicle signal verification

Displays the following vehicle signal information in the center display.

―  Steering switch signal input condition

―  Commander switch signal input condition

―  GPS antenna signal input condition

―  Voice recognition-use microphone signal input condition

―  Auxiliary jack/USB port/SD card slot hub 1 signal input condition

―  Auxiliary jack/USB port/SD card slot hub 2 signal input condition

―  RS-485 signal input condition

―  SD card insertion condition

―  CD or DVD equipment recognition condition

―  DVD equipment recognition condition

65

Commander and Switch Check

Switch Inspection

Displays the steering switch or commander switch operation content in the center display.

Note

•  If the operation content previously detected is being displayed in the center display, newly detected content is added over it.

68

Software version display (TFT Display)

Software version verification

Displays the center display (TFT LCD screen control) software version.

69

Software version display (Touch Panel)

Software version verification

Displays the center display (touch panel control) software version.

70

Display Check

Display/touch panel inspection

Displays the display/touch panel inspection results in the center display.

1.  Unicolor screen in the following colors

―  White→Black→Red→Green→Blue

2.  Horizontal-striped screen in black and the following colors

―  Red→Green→Blue

3.  Vertical-striped screen in black and the following colors

―  Red→Green→Blue

4.  Checkered screen in black and the following colors

―  Red→Green→Blue

5.  Returns to 1.

Note

•  The display/touch panel inspection is repeated periodically until the same location on the center display is touched for 10 s or more.

72

GPS Data

GPS information verification

Displays the following GPS information in the center display.

―  Longitude (X) (Degree of longitude in GPS information of the current location)

―  Latitude (Y) (Degree of latitude in GPS information of the current location)

―  Absolute Time (Z) (Date and time information (GMT))

―  Number of Satellites (Number of satellites being received)

84

Manufacturer Code Display TAU

Manufacturer name verification

Displays the TAU manufacturer in the center display.

85

Part Number Readout TAU

Part number verification

Displays the TAU part number (first 4 digits).

86

Radio Test Mode AM (Main)

Do not operate because item is for manufacturer use.

87

HD Certification (Main Tuner)

Do not operate because item is for manufacturer use.

88

HD Certification (Sub Tuner)

Do not operate because item is for manufacturer use.

89

XM Certification

Do not operate because item is for manufacturer use.

90

AM Reception Sensitivity Level Test

Radio reception condition verification

Displays the radio reception condition in the center display.

91

Radio Test Mode (Main)

Do not operate because item is for manufacturer use.

92

Radio Test Mode (Sub)

Do not operate because item is for manufacturer use.

93

Software Version Display (TAU)

Software version verification

Displays the TAU software version.

94

Speaker Cyclic Test

Speaker Inspection

Outputs sound from the speakers in the following order:

Without Bose^®

1.  Front door speaker (LH) and tweeter (LH)

2.  Front door speaker (RH) and tweeter (RH)

3.  Rear door speaker (RH)

4.  Rear door speaker (LH)

With Bose^®

1.  Front door speaker (LH), front side speaker (LH) and front center speaker

2.  Front door speaker (RH), front side speaker (RH) and front center speaker

3.  Rear door speaker (RH) ,rear speaker (LH) and rear speaker (RH)

4.  Rear door speaker (LH) ,rear speaker (LH) and rear speaker (RH)

95

Vehicle Info Display (TAU)

Do not operate because item is for manufacturer use.

96

XM Serial Number

Do not operate because it is displayed, but, not function.

97

Radio Electric Field Strength (AM)

Do not operate because item is for manufacturer use.

98

Radio Electric Field Strength (FM)

Do not operate because item is for manufacturer use.

99

Software Update

Do not operate because item is for manufacturer use.

No.	Center display (diagnostic content)	Function	Content
01	CD Test	CD player or DVD/CD player inspection	The CD player inspection results are displayed in the center display.
02	Clear DTC	DTC clearing	Clears the DTCs. Note • DTC clearing is performed in the following order, and a message is displayed each time to indicate the DTCs are cleared. ― CMU ― TAU ― CD player
03	Read AVC DTC	Inspection of all DTCs related to module	Displays the DTCs of the entertainment system related parts. Note • Detection of DTCs is limited if the ignition is in the ACC position. Refer to the workshop manual for details.
04	Read CMU DTC	DTC inspection for CMU	The CMU DTCs are displayed in the center display.
05	Read TAU DTC	DTC inspection for TAU	The TAU DTCs are displayed in the center display.
06	Read CD DTC	DTC inspection for CD player or DVD/CD player	The CD player DTCs are displayed in the center display.
07	Read DTV DTC	Does not operate due to unavailability of applicable DTC.
08	Software Reset AVC	Do not operate because item is for manufacturer use.
09	Software Version Display (CD)	Software version verification	Displays the CD player software version.
10	Part Number Readout CD/DVD	Part number verification	Displays the CD player part number (first four digits)
21	DVD TEST MODE ENABLE	Do not operate because item is for manufacturer use.
22	DVD TEST MODE DISABLE	Do not operate because item is for manufacturer use.
25	Antenna Continuity Status	Antenna control output condition 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). Note • Even if the system is normal, radio reception may be difficult depending on where the system is inspected (indoors/outdoors, or conditions at the location). Before inspecting the system, verify that radio reception is adequate. • When performing the inspection, select the best area for receiving radio frequencies.
26	DTV TEST ON	Do not operate because item is for manufacturer use.
27	DTV TEST OFF	Do not operate because item is for manufacturer use.
53	Software Version Display (CMU)	Software version verification	Displays the CMU (overall entertainment system ) software version.
57	Software Version Display (VIP)	Software version verification	Displays the CMU (overall communication with vehicle) software version.
58	Vehicle Info	Configuration information verification	Displays the following configuration information in the center display. ― Destination ― CMU Types
59	CMU Serial Number Readout	Individual number verification	Displays the unique number verification of the CMU in the center display.
61	Vehicle Signal (Unit Status)	Vehicle signal verification	Displays the following vehicle signal information in the center display. ― Steering switch signal input condition ― Commander switch signal input condition ― GPS antenna signal input condition ― Voice recognition-use microphone signal input condition ― Auxiliary jack/USB port/SD card slot hub 1 signal input condition ― Auxiliary jack/USB port/SD card slot hub 2 signal input condition ― RS-485 signal input condition ― SD card insertion condition ― CD or DVD equipment recognition condition ― DVD equipment recognition condition
65	Commander and Switch Check	Switch Inspection	Displays the steering switch or commander switch operation content in the center display. Note • If the operation content previously detected is being displayed in the center display, newly detected content is added over it.
68	Software version display (TFT Display)	Software version verification	Displays the center display (TFT LCD screen control) software version.
69	Software version display (Touch Panel)	Software version verification	Displays the center display (touch panel control) software version.
70	Display Check	Display/touch panel inspection	Displays the display/touch panel inspection results in the center display. 1. Unicolor screen in the following colors ― White→Black→Red→Green→Blue 2. Horizontal-striped screen in black and the following colors ― Red→Green→Blue 3. Vertical-striped screen in black and the following colors ― Red→Green→Blue 4. Checkered screen in black and the following colors ― Red→Green→Blue 5. Returns to 1. Note • The display/touch panel inspection is repeated periodically until the same location on the center display is touched for 10 s or more.
72	GPS Data	GPS information verification	Displays the following GPS information in the center display. ― Longitude (X) (Degree of longitude in GPS information of the current location) ― Latitude (Y) (Degree of latitude in GPS information of the current location) ― Absolute Time (Z) (Date and time information (GMT)) ― Number of Satellites (Number of satellites being received)
84	Manufacturer Code Display TAU	Manufacturer name verification	Displays the TAU manufacturer in the center display.
85	Part Number Readout TAU	Part number verification	Displays the TAU part number (first 4 digits).
86	Radio Test Mode AM (Main)	Do not operate because item is for manufacturer use.
87	HD Certification (Main Tuner)	Do not operate because item is for manufacturer use.
88	HD Certification (Sub Tuner)	Do not operate because item is for manufacturer use.
89	XM Certification	Do not operate because item is for manufacturer use.
90	AM Reception Sensitivity Level Test	Radio reception condition verification	Displays the radio reception condition in the center display.
91	Radio Test Mode (Main)	Do not operate because item is for manufacturer use.
92	Radio Test Mode (Sub)	Do not operate because item is for manufacturer use.
93	Software Version Display (TAU)	Software version verification	Displays the TAU software version.
94	Speaker Cyclic Test	Speaker Inspection	Outputs sound from the speakers in the following order: Without Bose^® 1. Front door speaker (LH) and tweeter (LH) 2. Front door speaker (RH) and tweeter (RH) 3. Rear door speaker (RH) 4. Rear door speaker (LH) With Bose^® 1. Front door speaker (LH), front side speaker (LH) and front center speaker 2. Front door speaker (RH), front side speaker (RH) and front center speaker 3. Rear door speaker (RH) ,rear speaker (LH) and rear speaker (RH) 4. Rear door speaker (LH) ,rear speaker (LH) and rear speaker (RH)
95	Vehicle Info Display (TAU)	Do not operate because item is for manufacturer use.
96	XM Serial Number	Do not operate because it is displayed, but, not function.
97	Radio Electric Field Strength (AM)	Do not operate because item is for manufacturer use.
98	Radio Electric Field Strength (FM)	Do not operate because item is for manufacturer use.
99	Software Update	Do not operate because item is for manufacturer use.