ON-BOARD DIAGNOSTIC [ACTIVE DRIVING DISPLAY]

id092200021858

Outline

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

― A malfunction detection function, which detects overall malfunctions in the instrument cluster-related parts.

― A memory function, which stores detected DTCs.

― A display function, which indicates malfunction locations and status via DTC output.

― A PID/data monitoring function, which reads out specific input/output signals and verifies the input/output condition.

• Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted, and the PID/data monitoring function can be activated.

Malfunction detection function

• Detects malfunctions in input/output signals.

• If a malfunction occurs, the active driving display records the malfunction as a DTC. A recorded DTC can be read by the Mazda Modular Diagnostic System (M-MDS).

×: Applicable

—: Not applicable

DTC No.	Warning/indicator light	Description	Fail-safe	Drive cycle	Self test type^*1	Memory function
U0001:88	—	Module communication error (HS-CAN)	—	—	C, D	×
U0100:00	Illuminated/Flash	Communication error with PCM	—	—	C, D	×
U0101:00^*2	—	Communication error with TCM	—	—	C, D	×
U0104:00^*3	—	Communication error with radar unit	—	—	C, D	×
U0155:00^*4	—	Communication error with instrument cluster	—	—	C, D	×
U0156:00	Illuminated/Flash	Communication error with connectivity master unit (CMU)	—	—	C, D	×
U0235:00^*5	—	Communication error with laser sensor	×	—	C, D	×
U023A:00^*6	Illuminated/Flash	Communication error with forward sensing camera (FSC)	—	—	C, D	×
U0298:00	—	Communication error with DC-DC converter (i-ELOOP)	—	—	C, D	×
U0401:68	Illuminated/Flash	Error signal received from PCM	—	—	C, D	×
U0402:68	—	Error signal received from TCM	—	—	C, D	×
U0405:00	—	Error signal received from radar unit	—	—	C, D	×
U0423:68	Illuminated/Flash	Error signal received from instrument cluster	—	—	C, D	×
U0433:00	—	Error signal received from laser sensor	×	—	C, D	×
U053B:00	—	Error signal received from forward sensing camera (FSC)	—	—	C, D	×
U3000:41	—	Active driving display internal malfunction	—	—	C, D	×
U3003:16	—	Low power supply voltage input to active driving display	—	—	C, D	×

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

*2 :ATX

*3 :With mazda radar cruise control (MRCC) system

*4 :With center display

*5 :With smart city brake support (SCBS)

*6 :With forward sensing camera (FSC)

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.

am6xun00000789

Status byte for DTC

• The two digits (two digits after hyphen (-)) after the 7-digit DTC.

ac5wzn00002008

• A code which indicates the pending code, current/past malfunction status, or warning illumination status.

• 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.

Detection condition for the applicable DTC

DTC No.

Description

Detection condition

U0001:88

Module communication error (HS-CAN)

•  Active driving display detects a CAN bus communication line (HS-CAN) malfunction.

U0100:00

Communication error with PCM

•  Active driving display cannot receive the CAN signal from the PCM.

U0101:00

Communication error with TCM

•  Active driving display cannot receive the CAN signal from the TCM for 1 s or more.

U0104:00

Communication error with radar unit

•  Active driving display cannot receive the CAN signal from the radar unit for 1 s or more.

U0155:00

Communication error with instrument cluster

•  Active driving display cannot receive the CAN signal from the instrument cluster for 5 s or more.

U0156:00

Communication error with connectivity master unit (CMU)

•  Active driving display cannot receive the CAN signal from the connectivity master unit (CMU) for 5 s or more.

U0235:00

Communication error with laser sensor

•  Active driving display cannot receive the CAN signal from the laser sensor for 1 s or more.

U023A:00

Communication error with forward sensing camera (FSC)

•  Active driving display cannot receive the CAN signal from the forward sensing camera (FSC) for 1 s or more.

U0298:00

Communication error with DC-DC converter (i-ELOOP)

•  Active driving display cannot receive the CAN signal from the DC-DC converter (i-ELOOP) for 5 s or more.

U0401:68

Error signal received from PCM

•  The active driving display receives the error signal from the PCM for the ignition switched ON (engine off or on).

U0402:68

Error signal received from TCM

•  The active driving display received error signals from the transmission/transaxle for the ignition switched ON (engine off or on).

U0405:00

Error signal received from radar unit

•  The active driving display receives the error signal from the radar unit for the ignition switched ON (engine off or on).

U0423:68

Error signal received from instrument cluster

•  The active driving display receives the error signal from the instrument cluster for the ignition switched ON (engine off or on).

U0433:00

Error signal received from laser sensor

•  Active driving display detects the following conditions:

―  Malfunction of laser sensor or smart city brake support related system (laser sensor, DSC HU/CM, PCM).

―  Laser sensor control is temporarily inhibited.

U053B:00

Error signal received from forward sensing camera (FSC)

•  The active driving display receives the error signal from the forward sensing camera (FSC) for the ignition switched ON (engine off or on).

U3000:41

Active driving display internal malfunction

•  With the ignition switched ON (engine off or on), a malfunction in the active driving display is detected.

U3003:16

Low power supply voltage input to active driving display

•  Active driving display power supply circuit voltage of less than 10 V is detected.

DTC No.	Description	Detection condition
U0001:88	Module communication error (HS-CAN)	• Active driving display detects a CAN bus communication line (HS-CAN) malfunction.
U0100:00	Communication error with PCM	• Active driving display cannot receive the CAN signal from the PCM.
U0101:00	Communication error with TCM	• Active driving display cannot receive the CAN signal from the TCM for 1 s or more.
U0104:00	Communication error with radar unit	• Active driving display cannot receive the CAN signal from the radar unit for 1 s or more.
U0155:00	Communication error with instrument cluster	• Active driving display cannot receive the CAN signal from the instrument cluster for 5 s or more.
U0156:00	Communication error with connectivity master unit (CMU)	• Active driving display cannot receive the CAN signal from the connectivity master unit (CMU) for 5 s or more.
U0235:00	Communication error with laser sensor	• Active driving display cannot receive the CAN signal from the laser sensor for 1 s or more.
U023A:00	Communication error with forward sensing camera (FSC)	• Active driving display cannot receive the CAN signal from the forward sensing camera (FSC) for 1 s or more.
U0298:00	Communication error with DC-DC converter (i-ELOOP)	• Active driving display cannot receive the CAN signal from the DC-DC converter (i-ELOOP) for 5 s or more.
U0401:68	Error signal received from PCM	• The active driving display receives the error signal from the PCM for the ignition switched ON (engine off or on).
U0402:68	Error signal received from TCM	• The active driving display received error signals from the transmission/transaxle for the ignition switched ON (engine off or on).
U0405:00	Error signal received from radar unit	• The active driving display receives the error signal from the radar unit for the ignition switched ON (engine off or on).
U0423:68	Error signal received from instrument cluster	• The active driving display receives the error signal from the instrument cluster for the ignition switched ON (engine off or on).
U0433:00	Error signal received from laser sensor	• Active driving display detects the following conditions: ― Malfunction of laser sensor or smart city brake support related system (laser sensor, DSC HU/CM, PCM). ― Laser sensor control is temporarily inhibited.
U053B:00	Error signal received from forward sensing camera (FSC)	• The active driving display receives the error signal from the forward sensing camera (FSC) for the ignition switched ON (engine off or on).
U3000:41	Active driving display internal malfunction	• With the ignition switched ON (engine off or on), a malfunction in the active driving display is detected.
U3003:16	Low power supply voltage input to active driving display	• Active driving display power supply circuit voltage of less than 10 V is detected.

Snapshot Data

• The data for all DTCs currently detected is stored.

—: Not applicable

Snapshot data item	Unit		Data contents	Data read/use method	Corresponding data monitor items
AAT	°C	°F	Ambient temperature	—	—
APP_STATUS	Accelerator Pedal Off/Under20%/Over20%/FAIL		Accelerator pedal position status	—	—
CFG_STATUS	Config Complete/Not Configured/Config Error		Instrument cluster configuration status	—	—
ECT_STATUS	Under 0 degrees C/0 - Under 80 degrees C/Over 80 degrees C/FAIL		Engine coolant temperature status	—	—
IC_VPWR	V		Instrument cluster power supply voltage	When DTC is detected, instrument cluster displays power supply voltage value of instrument cluster in M-MDS.	VPWR
IG-ON_TIMER	hh:mm:ss^*1		Elapsed time since ignition was switched ON (engine off or on) Note • The instrument cluster records the elapsed time since the ignition was switched ON (engine off or on).	When DTC is detected, instrument cluster displays elapsed time since ignition was switched ON (engine off or on) in M-MDS.	—
PWR_MODE_KEY	Key Out/Key Recently Out (Position 0)/Accessory (Position 1)/Post Ignition (Position 2)/Ignition On (Position 2)/Running (Position 2)/Running - Starting		• Key Out: Ignition switched off • Key Recently Out (Position 0): Elapsed time within 3 s since ignition was switched off • Accessory (Position 1): Ignition is switched to ACC • Post Ignition (Position 2): Elapsed time within 3 s since ignition was switched ON (engine off or on) • Ignition On (Position 2): Ignition switched ON (engine off) • Running (Position 2): Ignition switched ON (engine on) • Running - Starting: Cranking condition	When DTC is detected, instrument cluster displays ignition switch status in M-MDS.	—
RPM_STATUS	Engine Stop/Under1500rpm/Over1500rpm/FAIL		Engine speed status	When DTC is detected, instrument cluster displays engine speed in M-MDS.	TACHOMTR
SHIFT_STATUS	P/N/D/R/FAIL		Selector lever position status	When DTC is detected, instrument cluster displays selector lever position in M-MDS.	—
TOTAL_DIST	km	Miles	Accumulated total traveled distance from completion of vehicle until instrument cluster detects DTC (Odometer value in instrument cluster)	The total traveled distance from which the instrument cluster detects DTCs to the present can be calculated by performing the following procedure. 1. Verify the odometer value in the instrument cluster. 2. Verify the snapshot data item TOTAL_DIST. 3. Subtract 2 from 1.	—
TOTAL_TIME	hh:mm:ss^*1		Accumulated total elapsed time since vehicle completion until instrument cluster detects a DTC Note • When the ROOM fuse is removed, and the ignition is switched off, the time is not included in the elapsed time.	The elapsed time from which the instrument cluster detects DTCs to the present can be calculated by performing the following procedure. 1. Verify the instrument cluster PID item TOTAL_TIME. 2. Verify the snapshot data item TOTAL_TIME. 3. Subtract 2 from 1.	TOTAL_TIME
VPWR	V		Instrument cluster power supply voltage	—	VPWR
VSPD_STATUS	Stop/0-10km/h/Over10km/h/FAIL		Vehicle speed status	When DTC is detected, instrument cluster displays vehicle speed in M-MDS.	SPEEDOMTR

*1 :The seconds may be indicated after the decimal point.

Data Monitor Function

• With the PID/data monitor function, the input/output signal monitor items set in the instrument cluster can be selected and read out in real-time.

• The items which can be selected are as follows.

—: Not applicable

PID	Unit/Operation	Data contents	Module control terminal
MAINT_MODE	Off/On	• Off: Maintenance mode is not launched • On: Maintenance mode is launched	—
VPWR	V	Displays power supply voltage	F

Simulation function

• The simulation function drives the output parts set in the instrument cluster regardless of the instrument cluster control condition.

• The items which can be selected are as follows.

Note

• Simulation items on parts which are not equipped to the vehicle do not operate.

Simulation item

Unit/Operation

Data contents

Output part name

MAINT_MODE

On/Off

• Off: Finish maintenance mode

• On: Launch maintenance mode

Active driving display