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

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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	×
B1087:87	03/04	—	Communication error with commander switch	—	—	C	×
B108E:04	03/04	—	Center display internal malfunction	—	—	C	×
B108E:06	03/04	—	HDCP authorization error	—	—	C	×
B108E:1C	03/04	—	Low power supply voltage input to center display	×	—	C	×
B108E:87	03/04	—	Center display circuit malfunction	—	—	C	×
B116A:11	03/04	—	Microphone circuit malfunction	—	—	C	×
B116A:12	03/04	—	Microphone circuit malfunction	—	—	C	×
B116A:92	03/04	—	Microphone circuit malfunction	—	—	C	×
B119F:11	03/04	—	GPS antenna circuit malfunction	—	—	C	×
B119F:13	03/04	—	GPS antenna circuit malfunction	—	—	C	×
B119F:1D	03/04	—	GPS antenna circuit malfunction	—	—	C	×
B119F:92	03/04	—	GPS antenna circuit malfunction	—	—	C	×
B11BA:11	03/04	—	Steering switch circuit malfunction	—	—	C	×
B11BA:15	03/04	—	Steering switch circuit malfunction	—	—	C	×
B1201:11	03/04	—	Steering switch circuit malfunction	—	—	C	×
B1201:15	03/04	—	Steering switch circuit malfunction	—	—	C	×
B1238:01	03/05	—	Without Bose^® • Speaker circuit malfunction With Bose^® • Audio amplifier circuit malfunction	—	—	C	×
B1238:16	03/05	—	Tuner and amp unit (TAU) low power supply voltage input	—	—	C	×
B1238:87	03/04	—	RDS traffic information transfer circuit malfunction	—	—	C	×
B1252:09	03/04	—	Auxiliary jack/USB port/SD card slot hub circuit malfunction	—	—	C	×
B1252:1D	03/04	—	Auxiliary jack/USB port/SD card slot hub circuit malfunction	—	—	C	×
B1252:87	03/04	—	Communication error with auxiliary jack/USB port/SD card slot hub	—	—	C	×
B12BD:11^*4	03/04	—	Rear mount camera circuit malfunction	—	—	C	×
B12BD:87^*4	03/04	—	Rear mount camera transmission error	—	—	C	×
B1A89:13^*5	03/05	—	DAB antenna feeder malfunction	—	—	C	×
B1A89:42^*5	03/05	—	Tuner and amp unit (TAU) internal malfunction	—	—	C	×
B1D19:00^*3	03/06	—	Region code error or parental lock function error	—	—	C	×
B1D19:64^*6	03/06	—	Incompatible disc inserted	×	—	C	×
B1D19:79^*6	03/06	—	CD player or DVD/CD player disc read error	×	—	C	×
B1D19:98^*6	03/06	—	Abnormal CD player or DVD/CD player temperature	×	—	C	×
U0001:88	03/04	—	Module communication error (HS-CAN)	—	—	C	×
U0028:88	03/04	—	Unit communication error (LOCAL-CAN)	—	—	C	×
U0100:00	03/04	—	Communication error with PCM	—	—	C	×
U0101:00^*7	03/04	—	Communication error with TCM	—	—	C	×
U0104:00^*8	03/04	—	Communication error with radar unit	—	—	C	×
U0121:00	03/04	—	Communication error with ABS HU/CM or DSC HU/CM	—	—	C	×
U0131:00	03/04	—	Communication error with EPS control module	—	—	C	×
U0140:00	03/04	—	Communication error with front body control module (FBCM)	—	—	C	×
U0151:00	03/04	—	Communication error with SAS control module	—	—	C	×
U0155:00	03/04	—	Communication error with instrument cluster	—	—	C	×
U0182:00^*9	03/04	—	Communication error with AFS control module or adaptive LED headlights control module or auto leveling control module	—	—	C	×
U0184:00	03/04	—	Communication error with tuner and amp unit (TAU)	—	—	C	×
U0187:00^*6	03/04	—	Communication error with CD player or DVD/CD player	—	—	C	×
U0214:00	03/04	—	Communication error with start stop unit	—	—	C	×
U0235:00^*10	03/04	—	Communication error with forward sensing camera (FSC)	—	—	C	×
U023A:00^*10	03/04	—	Communication error with forward sensing camera (FSC)	—	—	C	×
U2300:54	03/04	—	Configuration data not received from instrument cluster	—	—	C	×
U2300:55	03/04	—	Instrument cluster configuration not implemented	—	—	C	×
U3000:42	03/04	—	Connectivity master unit (CMU) internal malfunction (poor data read-outs)	—	—	C	×
U3003:16	03/04	—	Low ACC power supply voltage input to connectivity master unit (CMU)	—	—	C	×

*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 DAB antenna amplifier

*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 forward sensing camera (FSC)

Detection condition for the applicable DTC

DTC No.

Description

Fail-safe function

B100E:87

Communication error with DVD/CD player

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

B1087:87

Communication error with commander switch

•  The connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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

•  Connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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

Tuner and amp unit (TAU) low power supply voltage input

•  Connectivity master unit (CMU) detects power supply circuit voltage for tuner and amp unit (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 connectivity master unit (CMU) detects a communication error in the RDS traffic information transfer circuit for 20 times 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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (CMU) cannot receive a signal from the auxiliary jack/USB port/SD card slot hub.

B12BD:11

Rear mount camera circuit malfunction

•  The connectivity master unit (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

Rear mount camera transmission error

•  The connectivity master unit (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

DAB antenna feeder malfunction

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

B1A89:42

Tuner and amp unit (TAU) internal malfunction

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

B1D19:00

Region code error or parental lock function error

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

B1D19:64

Incompatible disc inserted

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

B1D19:79

CD player or DVD/CD player disc read error

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

B1D19:98

Abnormal CD player or DVD/CD player temperature

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

U0028:88

Unit communication error (LOCAL-CAN)

•  The connectivity master unit (CMU) detects CAN bus communication line (LOCAL-CAN) malfunction 10 times continuously.

U0100:00

Communication error with PCM

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

U0101:00

Communication error with TCM

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

U0104:00

Communication error with radar unit

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

U0121:00

Communication error with ABS HU/CM or DSC HU/CM

•  With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a CAN signal from the ABS HU/CM or 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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (CMU) cannot receive a CAN signal from the instrument cluster for 5 s or more.

U0182:00

Communication error with AFS control module or adaptive LED headlights control module or auto leveling control module

•  With the ignition switched ON (engine off or on), the connectivity master unit (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 connectivity master unit (CMU) cannot receive a CAN signal from the adaptive LED headlights control module for 5 s or more.

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

U0184:00

Communication error with tuner and amp unit (TAU)

•  The connectivity master unit (CMU) cannot receive a CAN signal from the tuner and amp unit (TAU) for 5 s or more.

U0187:00

Communication error with CD player or DVD/CD player

•  The connectivity master unit (CMU) cannot receive a 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 connectivity master unit (CMU) cannot receive a CAN signal from the start stop unit for 5 s or more.

U0235:00

Communication error with forward sensing camera (FSC)

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

U023A:00

Communication error with forward sensing camera (FSC)

•  With the ignition switched ON (engine off or on), the connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (CMU) memory.

U3000:42

Connectivity master unit (CMU) internal malfunction (poor data read-outs)

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

U3003:16

Low ACC power supply voltage input to connectivity master unit (CMU)

•  The connectivity master unit (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	Communication error with DVD/CD player	• With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a signal from the DVD/CD player.
B1087:87	Communication error with commander switch	• The connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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	• Connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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	Tuner and amp unit (TAU) low power supply voltage input	• Connectivity master unit (CMU) detects power supply circuit voltage for tuner and amp unit (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 connectivity master unit (CMU) detects a communication error in the RDS traffic information transfer circuit for 20 times 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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (CMU) cannot receive a signal from the auxiliary jack/USB port/SD card slot hub.
B12BD:11	Rear mount camera circuit malfunction	• The connectivity master unit (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	Rear mount camera transmission error	• The connectivity master unit (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	DAB antenna feeder malfunction	• The connectivity master unit detects an open circuit in DAB antenna feeder with the ignition switched ON (engine off or on).
B1A89:42	Tuner and amp unit (TAU) internal malfunction	• The connectivity master unit detects an DAB module malfunction in the tuner and amp unit (TAU) with the ignition switched ON (engine off or on).
B1D19:00	Region code error or parental lock function error	• The connectivity master unit (CMU) detects a region code error or parental lock function error with the ignition switched ON (engine off or on).
B1D19:64	Incompatible disc inserted	• With the ignition switched ON (engine on or off), the connectivity master unit (CMU) detects a disc having a data format that is incompatible with the CD player or DVD/CD player.
B1D19:79	CD player or DVD/CD player disc read error	• With the ignition switched ON (engine off or on), the connectivity master unit (CMU) detects a disc read error.
B1D19:98	Abnormal CD player or DVD/CD player temperature	• With the ignition switched ON (engine off or on), the connectivity master unit (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 connectivity master unit (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 connectivity master unit (CMU) detects malfunction in the CAN bus communication line (HS-CAN) 10 times continuously.
U0028:88	Unit communication error (LOCAL-CAN)	• The connectivity master unit (CMU) detects CAN bus communication line (LOCAL-CAN) malfunction 10 times continuously.
U0100:00	Communication error with PCM	• With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a CAN signal from the PCM for 5 s or more.
U0101:00	Communication error with TCM	• With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a CAN signal from the TCM for 5 s or more.
U0104:00	Communication error with radar unit	• With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a CAN signal from the radar unit for 5 s or more.
U0121:00	Communication error with ABS HU/CM or DSC HU/CM	• With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a CAN signal from the ABS HU/CM or 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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (CMU) cannot receive a CAN signal from the instrument cluster for 5 s or more.
U0182:00	Communication error with AFS control module or adaptive LED headlights control module or auto leveling control module	• With the ignition switched ON (engine off or on), the connectivity master unit (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 connectivity master unit (CMU) cannot receive a CAN signal from the adaptive LED headlights control module for 5 s or more. • With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a CAN signal from the auto leveling control module for 5 s or more.
U0184:00	Communication error with tuner and amp unit (TAU)	• The connectivity master unit (CMU) cannot receive a CAN signal from the tuner and amp unit (TAU) for 5 s or more.
U0187:00	Communication error with CD player or DVD/CD player	• The connectivity master unit (CMU) cannot receive a 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 connectivity master unit (CMU) cannot receive a CAN signal from the start stop unit for 5 s or more.
U0235:00	Communication error with forward sensing camera (FSC)	• With the ignition switched ON (engine off or on), the connectivity master unit (CMU) cannot receive a CAN signal from the forward sensing camera (FSC) for 5 s or more.
U023A:00	Communication error with forward sensing camera (FSC)	• With the ignition switched ON (engine off or on), the connectivity master unit (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 connectivity master unit (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 connectivity master unit (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 connectivity master unit (CMU) memory.
U3000:42	Connectivity master unit (CMU) internal malfunction (poor data read-outs)	• The connectivity master unit (CMU) cannot read data from the NVRAM in the connectivity master unit (CMU) with the ignition switched to ACC or ON (engine off or on).
U3003:16	Low ACC power supply voltage input to connectivity master unit (CMU)	• The connectivity master unit (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).

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)

Content/function

01

CD Test

CD player inspection

02

Clear DTC

DTC clearing

03

Read AVC DTC

Inspection of all DTCs related to module

04

Read CMU DTC

DTC inspection for connectivity master unit (CMU)

05

Read TAU DTC

DTC inspection for tuner and amplifier unit (TAU)

06

Read CD DTC

DTC inspection for CD player

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

10

Part Number Readout CD/DVD

Part number verification

25

Antenna Continuity Status

Antenna control output condition inspection

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

57

Software Version Display (VIP)

Software version verification

58

Vehicle Info

Configuration information verification

59

CMU Serial Number Readout

Individual number verification

61

Vehicle Signal (Unit Status)

Vehicle signal verification

65

Commander and Switch Check

Switch inspection

68

Software version display (TFT Display)

Software version verification

69

Software version display (Touch Panel)

Software version verification

70

Display Check

Display/touch panel inspection

72

GPS Data

GPS information verification

84

Maker code Display TAU

Manufacturer verification

85

Part Number Readout TAU

Part number verification

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 inspection

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

94

Speaker Cyclic Test

Speaker Inspection

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)	Content/function
01	CD Test	CD player inspection
02	Clear DTC	DTC clearing
03	Read AVC DTC	Inspection of all DTCs related to module
04	Read CMU DTC	DTC inspection for connectivity master unit (CMU)
05	Read TAU DTC	DTC inspection for tuner and amplifier unit (TAU)
06	Read CD DTC	DTC inspection for CD player
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
10	Part Number Readout CD/DVD	Part number verification
25	Antenna Continuity Status	Antenna control output condition inspection
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
57	Software Version Display (VIP)	Software version verification
58	Vehicle Info	Configuration information verification
59	CMU Serial Number Readout	Individual number verification
61	Vehicle Signal (Unit Status)	Vehicle signal verification
65	Commander and Switch Check	Switch inspection
68	Software version display (TFT Display)	Software version verification
69	Software version display (Touch Panel)	Software version verification
70	Display Check	Display/touch panel inspection
72	GPS Data	GPS information verification
84	Maker code Display TAU	Manufacturer verification
85	Part Number Readout TAU	Part number verification
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 inspection
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
94	Speaker Cyclic Test	Speaker Inspection
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.