ON-BOARD DIAGNOSTIC SYSTEM FUNCTION [DYNAMIC STABILITY CONTROL (DSC)]


id0402b2182100


Malfunction detection function

•  The malfunction detection function detects and displays malfunctions in the input/output signal system of the DSC HU/CM when the ignition is switched to ON.
•  When the DSC HU/CM is activated, the following malfunction detection is performed.
―  The ABS and brake system warning lights, DSC indicator lights, and DSC OFF light illuminate for approx. 3.0 s when the ignition is switched to ON to inspect for open circuits in the lights. At the same time, the fail-safe relay is operated, and the input/output signals of each part is monitored for malfunction diagnosis. After starting to drive, the first time the vehicle speed is approx. 10 km/h {6.2 mph} or more the pump motor is operated and malfunction diagnosis is performed again. The input/output signals of each part are then constantly monitored and malfunctions are diagnosed.
Note
•  When the fail-safe relay and pump motor operate, each of their sounds can be heard.
•  If the above malfunctions are detected, the corresponding lights are illuminated to alert the driver. DTCs can be output through the CAN_H and CAN_L of the DLC-2 using the external tester communication function. At the same time, malfunction detection results are sent to the memory and fail-safe functions.

Memory function

•  The memory function stores DTCs of malfunctions in input/output signal systems. With this function, once a DTC is stored it is not cleared after the ignition has been switched off, even if the malfunctioning signal system has returned to normal.
•  Since the DSC HU/CM has a built-in non-volatile memory, DTCs are not cleared even if the battery is removed. Therefore, it is necessary to clear the memory after performing repairs. Refer to the Workshop Manual for the DTC clearing procedure.

DTC 7-digit code definition

•  When related systems or components have failed, the CM stores the DTC of the malfunctioning part in the CM memory, and allows for the retrieval of the store data using scanning tool when necessary. The DTCs are indicated using seven digits. Each digit indicates the following.
am3zzn00002249

Fail-safe function

•  When the malfunction detection function determines a malfunction, each light illuminates to advise the driver. At this time, the fail-safe function controls the ABS, EBD, TCS, DSC and brake assist control as shown in the fail-safe function malfunction contents table.
Warning
•  If EBD control is prohibited, the rear wheels could lock-up before the front wheels. If this occurs, the vehicle could yaw and become unstable. Therefore, always inspect the system immediately if EBD control is prohibited.
Note
•  Vehicles with combined sensor: Applied VIN (assumed)
European (L.H.D. U.K.) specs.
•  JMZ BL12F60# 100001—181415
•  JMZ BL12F70# 100001—181415
•  JMZ BL12Y20# 100001—181415
•  JMZ BL12Z20# 100001—181415
•  JMZ BL12Z50# 100001—181415
•  JMZ BL14F60# 100001—181415
•  JMZ BL14F70# 100001—181415
•  JMZ BL14Y20# 100001—181415
•  JMZ BL14Z20# 100001—181415
•  JMZ BL14Z50# 100001—181415
•  JMZ BLA2A60# 100001—181415
•  JMZ BLA2C60# 100001—181415
•  JMZ BLA2F70# 100001—181415
•  JMZ BLA2G60# 100001—181415
•  JMZ BLA2Y60# 100001—181415
•  JMZ BLA2Z20# 100001—181415
•  JMZ BLA2Z50# 100001—181415
•  JMZ BLA4360# 100001—181415
•  JMZ BLA4A60# 100001—181415
•  JMZ BLA4C60# 100001—181415
•  JMZ BLA4F70# 100001—181415
•  JMZ BLA4G60# 100001—181415
•  JMZ BLA4Y60# 100001—181415
•  JMZ BLA4Z20# 100001—181415
•  JMZ BLA4Z50# 100001—181415
Australian specs.
•  JM0 BL103100 100001—225632
•  JM0 BL10C100 100001—225632
•  JM0 BL10F100 100001—225632
•  JM0 BL10L100 100001—225632
General (R.H.D.) specs.
•  JM6 BL1031*0 100001—225632
•  JM6 BL1051*0 100001—225632
•  JM6 BL10F1*0 100001—225632
•  JM6 BL10L1*0 100001—225632
•  JM6 BL10Z1*0 100001—225632
General (L.H.D.) specs., Arab Gulf Cooperation Council, China
•  JM7 BL04F**# 100001—225632
•  JM7 BL04Z**# 100001—225632
•  JM7 BL12F**# 100001—225632
•  JM7 BL12Z**# 100001—225632
•  JM7 BL14F**# 100001—225632
•  JM7 BL14Z**# 100001—225632
•  JM7 BL22F**# 100001—225632
•  JM7 BL22Z**# 100001—225632
•  JM7 BL24F**# 100001—225632
•  JM7 BL24Z**# 100001—225632
•  Vehicles without combined sensor: Applied VIN (assumed)
European (L.H.D. U.K.) specs.
•  JMZ BL12F60# 181416—
•  JMZ BL12F70# 181416—
•  JMZ BL12Y20# 181416—
•  JMZ BL12Z20# 181416—
•  JMZ BL12Z50# 181416—
•  JMZ BL14F60# 181416—
•  JMZ BL14F70# 181416—
•  JMZ BL14Y20# 181416—
•  JMZ BL14Z20# 181416—
•  JMZ BL14Z50# 181416—
•  JMZ BLA2A60# 181416—
•  JMZ BLA2C60# 181416—
•  JMZ BLA2F70# 181416—
•  JMZ BLA2G60# 181416—
•  JMZ BLA2Y60# 181416—
•  JMZ BLA2Z20# 181416—
•  JMZ BLA2Z50# 181416—
•  JMZ BLA4360# 181416—
•  JMZ BLA4A60# 181416—
•  JMZ BLA4C60# 181416—
•  JMZ BLA4F70# 181416—
•  JMZ BLA4G60# 181416—
•  JMZ BLA4Y60# 181416—
•  JMZ BLA4Z20# 181416—
•  JMZ BLA4Z50# 181416—
Australian specs.
•  JM0 BL103100 225633—
•  JM0 BL10C100 225633—
•  JM0 BL10F100 225633—
•  JM0 BL10L100 225633—
General (R.H.D.) specs.
•  JM6 BL1031*0 225633—
•  JM6 BL1051*0 225633—
•  JM6 BL10F1*0 225633—
•  JM6 BL10L1*0 225633—
•  JM6 BL10Z1*0 225633—
General (L.H.D.) specs., Arab Gulf Cooperation Council, China
•  JM7 BL04F**# 225633—
•  JM7 BL04Z**# 225633—
•  JM7 BL12F**# 225633—
•  JM7 BL12Z**# 225633—
•  JM7 BL14F**# 225633—
•  JM7 BL14Z**# 225633—
•  JM7 BL22F**# 225633—
•  JM7 BL22Z**# 225633—
•  JM7 BL24F**# 225633—
•  JM7 BL24Z**# 225633—

Fail-safe Function Malfunction Contents

Malfunction location

DTC No.

Fail-safe function

Warning light illumination status

Control status

Mazda Modular Diagnostic System (M-MDS) display

ABS warning light

Brake system warning light (parking brake released)

DSC indicator light

DSC OFF light

ABS control

EBD control

TCS Control

DSC Control

Brake assist control

Brake control

Engine control

DSC HU/CM internal malfunction (traction control solenoid valve system)
C0001:01
-
-
Illuminated
-
Control disabled
Control disabled
Control disabled
Control disabled
Control disabled
C0002:01
DSC HU/CM internal malfunction (stability control solenoid valve system)
C0003:01
-
-
Illuminated
-
Control disabled
Control disabled
Control disabled
Control disabled
Control disabled
C0004:01
DSC HU/CM internal malfunction (LF inlet solenoid)
C0010:01
Illuminated
Illuminated
Illuminated
-
Control disabled
Control disabled
Control disabled
Control disabled
Control disabled
DSC HU/CM internal malfunction (LF outlet solenoid)
C0011:01
DSC HU/CM internal malfunction (RF inlet solenoid)
C0014:01
DSC HU/CM internal malfunction (RF outlet solenoid)
C0015:01
DSC HU/CM internal malfunction (LR inlet solenoid)
C0018:01
DSC HU/CM internal malfunction (LR outlet solenoid)
C0019:01
DSC HU/CM internal malfunction (RR inlet solenoid)
C001C:01
DSC HU/CM internal malfunction (RR outlet solenoid)
C001D:01
Pump motor, motor relay
C0020:01
Illuminated
-
Illuminated
-
Control disabled
Control enabled
Control disabled
Control disabled
Control disabled
C0020:1C
C0020:71
ABS sensor rotor
C0030:07
Illuminated
-*1
Illuminated
-
Control disabled
Control enabled*2
Control disabled
Control disabled
Control disabled
C0033:07
C0036:07
C0039:07
ABS wheel-speed sensor
C0031:01
Illuminated
-*1
Illuminated
-
Control disabled
Control enabled*2
Control disabled
Control disabled
Control disabled
C0034:01
C0037:01
C003A:01
ABS wheel-speed sensor/ABS sensor rotor
C0031:07
Illuminated
-*1
Illuminated
-
Control disabled
Control enabled*2
Control disabled
Control disabled
Control disabled
C0034:07
C0037:07
C003A:07
Brake switch
C0040:64
-
-
-
-
Control enabled
Control enabled
Control enabled
Control enabled
Control enabled
Brake fluid pressure sensor
C0044:01
-
-
illuminated
-
Control enabled
Control enabled
Control disabled
Control disabled
Control disabled
C0044:28
C0044:54
C0044:64
Steering angle sensor
C0051:28
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
Combined sensor system*3
C0061:01
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
C0061:28
C0061:64
C0063:01
C0063:28
C0063:64
C006A:01
C006A:16
C006A:17
C006A:95
SAS control module system*4
C0061:28
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
C0061:64
C0063:28
C0063:64
DSC HU/CM system (unperformed initialization procedure)
C0061:54
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
C0063:54
Combined sensor (internal malfunction)*3
C006A:04
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
C006A:47
TCS/DSC control system
C006B:00
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
C0072:68
-
Control enabled
DSC HU/CM (internal malfunction)
B10DF:46
-
-
illuminated
-
Control enabled
Control enabled
Control disabled
Control disabled
Control disabled
C0082:47
illuminated
illuminated
illuminated
-
Control disabled
Control disabled
Control disabled
Control disabled
Control disabled
C0082:48
C0082:49
C1B14:01*4
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
U2007:46
illuminated
-
illuminated
-
Control disabled
Control enabled
Control disabled
Control disabled
Control disabled
DSC OFF switch
C1109:64
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control enabled
Control enabled
CAN line
U0001:88
illuminated
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
U0100:00
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
U0101:00*5
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
U0140:00
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
U0155:00
illuminated
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control enabled
Control enabled
Combined sensor system (CAN2 line malfunction)*3
U0125:00
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
U0125:88
SAS control module system (CAN2 line malfunction)*4
U0151:00
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
Abnormal message from PCM
U0401:00
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
Abnormal message from PCM (MTX, ATX (FN4A-EL))
Abnormal message from TCM (ATX (FS5A-EL))
U0402:00
Abnormal message from BCM
U0422:00
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
U0428:62
illuminated
-
illuminated
U0428:64
DSC HU/CM configuration
U2100:00
illuminated
-
illuminated
-
Control disabled
Control enabled
Control disabled
Control disabled
Control disabled
U2101:00
Abnormal message from SAS control module*4
U0452:86
-
-
illuminated
-
Control enabled
Control enabled
Control enabled
Control disabled
Control disabled
Control enabled
Power supply system
U3003:08
-
-
-
-
Control enabled
Control enabled
Control enabled
Control enabled
Control enabled
Control enabled
U3003:16
Illuminated
-*6
illuminated
-
Control disabled
Control enabled*6
Control disabled
Control disabled
Control disabled
Illuminated*7
Control disabled*7
U3003:17
Illuminated
Illuminated
Control disabled

*1  :Illuminates when two wheels or more have a malfunction.
*2  :Control disabled when two wheels or more have a malfunction.
*3  :Vehicles with combined sensor
*4  :Vehicles without combined sensor
*5  :ATX
*6  :Detected if condition of 9.4—10.0 V or less continues for 210 ms or more.
*7  :Detected if condition of 7.55—8.45 V or less continues for 30 s or more.