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 active driving display-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
×
U3000:41
—
Active driving display internal malfunction
—
—
C
×
U3003:16
—
Low power supply voltage input to active driving display
—
—
C
×

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

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

×: Applicable
—: Not applicable

DTC No.

Description

Detection condition
U0001:88
Module communication error (HS-CAN)
•  Active driving display detects a CAN bus communication line (HS-CAN) malfunction.
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 for 5 s or more with the ignition switched ON (engine off or on).


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
—
—
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/Key Approved (Position 0)/Post Accessory (Position 0)/Accessory (Position 1)/Post Ignition (Position 1)/ignition On (Position 2)/Running (Position 2)/Running - Starting In Progress (Position 2)/Crank (Position 3)
Ignition switch status
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 active driving display 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
VPWR_B
V
Displays power supply voltage
B


Simulation function

•  The simulation function drives the output parts set in the active driving display regardless of the active driving display 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
HUD_TEST
On/Off
•  Off: Finish test mode
•  On: Launch test mode
Active driving display