ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)]

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On-Board Diagnostic (OBD) Test Description

•  The OBD test inspects the integrity and function of the DSC and outputs the results when requested by the specific tests.
•  On-board diagnostic test also:
―  Provides a quick inspection of the DSC usually performed at the start of each diagnostic procedure.
―  Provides verification after repairs to ensure that no other faults occurred during service.
•  The OBD test is divided into 3 tests:
―  Read/clear diagnostic results, PID monitor and record and active command modes.

Read/clear diagnostic results

•  This function allows you to read or clear DTCs in the DSC HU/CM memory.


PID/Data monitor and record

•  This function allows you to access certain data values, input signals, calculated values, and system status information.


Active command modes

•  This function allows you to control devices through the M-MDS.


Reading DTCs Procedure

1.  Connect the M-MDS to the DLC-2 connector.

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2.  After the vehicle is identified, select the following items from the initial screen of the M-MDS.

•  When using the IDS (laptop PC)
1.  Select the “Toolbox” tab.
2.  Select “Self Test”.
3.  Select “Modules”.
4.  Select “ABS”.
•  When using the PDS (Pocket PC)
1.  Select “Module Tests”.
2.  Select “ABS”.
3.  Select “Self Test”.

3.  Verify the DTC according to the directions on the screen.

•  If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

4.  After completion of repairs, clear all DTCs stored in the DSC. (See Clearing DTCs Procedures.)


Clearing DTCs Procedures

1.  Connect the M-MDS to the DLC-2 connector.

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2.  After the vehicle is identified, select the following items from the initial screen of the M-MDS.

•  When using the IDS (laptop PC)
1.  Select the “Toolbox” tab.
2.  Select “Self Test”.
3.  Select “Modules”.
4.  Select “ABS”.
•  When using the PDS (Pocket PC)
1.  Select “Module Tests”.
2.  Select “ABS”.
3.  Select “Self Test”.

3.  Verify the DTC according to the directions on the screen.

4.  Press the clear button on the DTC screen to clear the DTC.

5.  Verify that no DTCs are displayed.


PID/Data Monitor and Record Procedure

1.  Connect the M-MDS to the DLC-2 connector.

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2.  After the vehicle is identified, select the following items from the initial screen of the M-MDS.

•  When using the IDS (laptop PC)
1.  Select the “Toolbox” tab.
2.  Select “DataLogger”.
3.  Select “Modules”.
4.  Select “ABS”.
•  When using the PDS (Pocket PC)
1.  Select “Module Tests”.
2.  Select “ABS”.
3.  Select “DataLogger”.

3.  Select the applicable PID from the PID table.

4.  Verify the PID data according to the directions on the screen.

Note
•  The PID/Data monitor function is used for monitoring the calculated value. Therefore, if the monitored value of the output parts is not within the specification, inspection of the monitored value of input parts corresponding to applicable output part control is necessary. In addition, because the system does not display output part malfunction as abnormality in the monitored value, it is necessary to inspect the output part individually using a active command modes function.

Active Command Modes Procedure

Note
•  Performing the active command modes function while the engine is running could result in the DTC U2064 being stored in the instrument cluster. Therefore, perform the active command mode inspection while the engine is stopped. If the active command mode inspection is accidentally performed while the engine is running, inspect the instrument cluster for the recorded DTCs, and then clear any that have been recorded.

1.  Connect the M-MDS to the DLC-2 connector.

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2.  After the vehicle is identified, select the following items from the initial screen of the M-MDS.

•  When using the IDS (laptop PC)
1.  Select the “Toolbox” tab.
2.  Select “DataLogger”.
3.  Select “Modules”.
4.  Select “ABS”.
•  When using the PDS (Pocket PC)
1.  Select “Module Tests”.
2.  Select “ABS”.
3.  Select “DataLogger”.

3.  Select the active command modes from the PID table.

4.  Perform the active command modes, inspect the operations for each parts.

•  If there is no operation sound from the relay, motor, and solenoid after the active command mode inspection is performed, it is possible that there is an open or short circuit in the wiring harness, relay, motor or solenoid, or sticking and operation malfunction.


DTC Table

DTC

System malfunction location

Page

M-MDS
B1317
Power supply system
(See DTC B1317, B1318 [DYNAMIC STABILITY CONTROL (DSC)].)
B1318
Power supply system
(See DTC B1317, B1318 [DYNAMIC STABILITY CONTROL (DSC)].)
B1342
DSC CM (internal malfunction)
(See DTC B1342, C1267, C1730 [DYNAMIC STABILITY CONTROL (DSC)].)
B2141
Vehicle data not recorded
(See DTC B2141 [DYNAMIC STABILITY CONTROL (DSC)].)
B2741
Combined sensor (internal malfunction)
(See DTC B2741 [DYNAMIC STABILITY CONTROL (DSC)].)
C1093
DSC OFF switch
(See DTC C1093 [DYNAMIC STABILITY CONTROL (DSC)].)
C1095
Pump motor, motor relay
(See DTC C1095 [DYNAMIC STABILITY CONTROL (DSC)].)
C1141
LF ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1142
RF ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1143
LR ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1144
RR ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1145
RF ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1155
LF ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1165
RR ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1175
LR ABS wheel-speed sensor
(See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1233
LF ABS wheel-speed sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1234
RF ABS wheel-speed sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1235
RR ABS wheel-speed sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1236
LR ABS wheel-speed sensor/ABS sensor rotor
(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1267
DSC CM (internal malfunction)
(See DTC B1342, C1267, C1730 [DYNAMIC STABILITY CONTROL (DSC)].)
C1277
Steering angle sensor
(See DTC C1277, C1278, C1306, C1307 [DYNAMIC STABILITY CONTROL (DSC)].)
C1278
Combined sensor system
(See DTC C1277, C1278, C1306, C1307 [DYNAMIC STABILITY CONTROL (DSC)].)
C1279
Combined sensor system
(See DTC C1279, C1280, C1281, C1282, C2778 [DYNAMIC STABILITY CONTROL (DSC)].)
C1280
Combined sensor system
(See DTC C1279, C1280, C1281, C1282, C2778 [DYNAMIC STABILITY CONTROL (DSC)].)
C1281
Combined sensor system
(See DTC C1279, C1280, C1281, C1282, C2778 [DYNAMIC STABILITY CONTROL (DSC)].)
C1282
Combined sensor system
(See DTC C1279, C1280, C1281, C1282, C2778 [DYNAMIC STABILITY CONTROL (DSC)].)
C1288
Brake fluid pressure sensor
(See DTC C1288, C1440 [DYNAMIC STABILITY CONTROL (DSC)].)
C1306
Steering angle sensor
(See DTC C1277, C1278, C1306, C1307 [DYNAMIC STABILITY CONTROL (DSC)].)
C1307
Steering angle sensor
(See DTC C1277, C1278, C1306, C1307 [DYNAMIC STABILITY CONTROL (DSC)].)
C1440
Brake fluid pressure sensor
(See DTC C1288, C1440 [DYNAMIC STABILITY CONTROL (DSC)].)
C1446
Brake switch
(See DTC C1446 (ZJ, ZY, Z6, LF, L3, L3 Turbo) [DYNAMIC STABILITY CONTROL (DSC)].)
(See DTC C1446 (MZ-CD 1.6 (Y6)) [DYNAMIC STABILITY CONTROL (DSC)].)
(See DTC C1446 (MZR-CD (RF Turbo)) [DYNAMIC STABILITY CONTROL (DSC)].)
C1470
TCS control system
(See DTC C1470, C1994 [DYNAMIC STABILITY CONTROL (DSC)].)
C1730
Brake fluid pressure sensor power supply system
(See DTC B1342, C1267, C1730 [DYNAMIC STABILITY CONTROL (DSC)].)
C1994
TCS/DSC control system
(See DTC C1470, C1994 [DYNAMIC STABILITY CONTROL (DSC)].)
C2778
Combined sensor system
(See DTC C1279, C1280, C1281, C1282, C2778 [DYNAMIC STABILITY CONTROL (DSC)].)
C2785
Combined sensor system (unperformed initialization procedure)
(See DTC C2785 [DYNAMIC STABILITY CONTROL (DSC)].)
U1900
CAN line
(See DTC U1900, U2012, U2023, U2202 [DYNAMIC STABILITY CONTROL (DSC)].)
U1901
Combined sensor system (CAN2 line malfunction)
(See DTC U1901, U2527 [DYNAMIC STABILITY CONTROL (DSC)].)
U2012
CAN line
(See DTC U1900, U2012, U2023, U2202 [DYNAMIC STABILITY CONTROL (DSC)].)
U2023
CAN line
(See DTC U1900, U2012, U2023, U2202 [DYNAMIC STABILITY CONTROL (DSC)].)
U2202
CAN line
(See DTC U1900, U2012, U2023, U2202 [DYNAMIC STABILITY CONTROL (DSC)].)
U2527
Combined sensor system (CAN2 line malfunction)
(See DTC U1901, U2527 [DYNAMIC STABILITY CONTROL (DSC)].)


PID/DATA Monitor Table

PID name (definition)

Unit/Condition

Operation condition (reference)

Action

DSC HU/CM terminal
BOO_ABS
(Brake pedal switch input)
On/Off
•  Brake pedal depressed: On
•  Brake pedal released: Off
Inspect the brake switch.
(See BRAKE SWITCH INSPECTION [EXCEPT MZ-CD 1.6 (Y6)].)
(See BRAKE SWITCH INSPECTION [MZ-CD 1.6 (Y6)].)
—
CCNTABS
(Number of continuous codes)
—
•  DTCs detected: 1—255
•  No DTCs detected: 0
Perform the DTC inspection.
(See DTC Table.)
—
ESP_VOLT
V
•  Ignition switch at ON: Approx. 12.2 V
•  Idling: Approx. 14.1 V
Inspect the battery.
—
LAT_ACCL
G
•  Vehicle stopped or driving at constant speed: 0 G
•  Cornering to right: Changes 0 G—positive
•  Cornering to left: Changes 0 G—negative
Inspect the combined sensor.
(See COMBINED SENSOR INSPECTION.)
—
LF_WSPD
(Left front ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the ABS wheel-speed sensor.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)
I, F
LR_WSPD
(Left rear ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the ABS wheel-speed sensor.
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)
AJ, AG
MPRETDR
Pa
•  Brake pedal depressed: Changes according to the brake fluid pressure
Inspect the DSC HU/CM.
(See DSC HU/CM INSPECTION.)
—
RF_WSPD
(Right front ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the ABS wheel-speed sensor.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)
AP, AS
RR_WSPD
(Right rear ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the ABS wheel-speed sensor.
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)
O, R
SWA_POS
°
•  Steering wheel in neutral position (not turned): 0°
•  Steering wheel turned to left: Changes 0°—negative
•  Steering wheel turned to right: Changes 0°—positive
Inspect the steering angle sensor.
AE, AN
TCYC_FS
On/Off
•  Solenoid valve activated: On
•  Solenoid valve not activated: Off
Inspect the DSC HU/CM.
(See DSC SYSTEM INSPECTION.)
—
TCYC_SW
Depressed/Not_Depressed
•  DSC OFF switch depressed: Depressed
•  DSC OFF switch not depressed: Not_Depressed
Inspect the DSC OFF switch.
(See DSC OFF SWITCH INSPECTION.)
AD
YAW_RATE
°/s
•  Vehicle stopped or driving straight: 0 °/s
•  Cornering to left: Changes 0 °/s—negative
•  Cornering to right: Changes 0 °/s—positive
Inspect the combined sensor.
(See COMBINED SENSOR INSPECTION.)
—


Active Command Modes Table

Command name

Output part

Operation

Operating condition
PMP_MOTOR
Pump motor
On/Off
Ignition switch at ON
RF_OUTLET
RF outlet solenoid valve
RF_INLET
RF inlet solenoid valve
LF_OUTLET
LF outlet solenoid valve
LF_INLET
LF inlet solenoid valve
RR_OUTLET
RR outlet solenoid valve
RR_INLET
RR inlet solenoid valve
LR_OUTLET
LR outlet solenoid valve
LR_INLET
LR inlet solenoid valve
LF_TC_PRV
LF stability control solenoid valve
RF_TC_PRV
RF stability control solenoid valve
LF_TC_SWV
LF traction control solenoid valve
RF_TC_SWV
RF traction control solenoid valve
MCYL_S_CAL
Brake fluid pressure sensor initialization start-up
True/False
LATACCEL
Combined sensor (lateral acceleration) initialization start-up