ON-BOARD DIAGNOSIS [DSC/RSC]

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On-Board Diagnostic (OBD) Test Description

•  The OBD test inspects the integrity and function of the DSC/RSC and outputs the results when requested by the specific tests.
•  On-board diagnostic test also:
―  Provides a quick inspection of the DSC/RSC 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/RSC 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.

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

•  When using the IDS (laptop PC)
1.  Select “Self Test”.
2.  Select “Modules”.
3.  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/RSC. (See Clearing DTCs Procedures.)


Clearing DTCs Procedures

1.  Connect the M-MDS to the DLC-2.

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

•  When using the IDS (laptop PC)
1.  Select “Self Test”.
2.  Select “Modules”.
3.  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.  Turn the ignition switch to the LOCK position.

6.  Turn the ignition switch to the ON position and wait for 5 s or more.

7.  Perform DTC inspection. (See Reading DTCs Procedure.)

8.  Verify that no DTCs are displayed.


PID/Data Monitor and Record Procedure

1.  Connect the M-MDS to the DLC-2.

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

•  When using the IDS (laptop PC)
1.  Select “DataLogger”.
2.  Select “Modules”.
3.  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 screen function is used for monitoring the calculated value of input/output signals in the module.Therefore, if the monitored value of the output parts is not within the specification, it is necessary to inspect the monitored value of input parts corresponding to the applicable output part control. In addition, because the system does not display an output part malfunction as an abnormality in the monitored value, it is necessary to inspect the output parts individually.
•  When detecting DTCs, PIDs related to a malfunctioning system may not display even if the module is normal. Therefore, if a PID is not displayed, it is necessary to verify the DTC, perform malfunction diagnosis of the DTC that was detected, and do repairs.

Active Command Modes Procedure

1.  Connect the M-MDS to the DLC-2.

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

•  When using the IDS (laptop PC)
1.  Select “DataLogger”.
2.  Select “Modules”.
3.  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 the operation of output parts cannot be verified after the active command mode inspection is performed, this could indicate the possibility of an open or short circuit, sticking, or operation malfunction in the output parts.


DTC Table

DTC

System malfunction location

Page

M-MDS
B1317
Power supply system
(See DTC B1317, B1318 [DSC/RSC].)
B1318
Power supply system
(See DTC B1317, B1318 [DSC/RSC].)
B1342
DSC/RSC HU/CM system
(See DTC B1342, C1730 [DSC/RSC].)
C1095
Pump motor, motor relay system
(See DTC C1095, C1096 [DSC/RSC].)
C1096
Pump motor, motor relay system
(See DTC C1095, C1096 [DSC/RSC].)
C1115
Valve relay system
(See DTC C1115, C1185 [DSC/RSC]
C1145
RF ABS wheel-speed sensor (open circuit) system
(See DTC C1145, C1155, C1165, C1175 [DSC/RSC].)
C1155
LF ABS wheel-speed sensor (open circuit) system
(See DTC C1145, C1155, C1165, C1175 [DSC/RSC].)
C1165
RR ABS wheel-speed sensor (open circuit) system
(See DTC C1145, C1155, C1165, C1175 [DSC/RSC].)
C1175
LR ABS wheel-speed sensor (open circuit) system
(See DTC C1145, C1155, C1165, C1175 [DSC/RSC].)
C1185
Valve relay system
(See DTC C1115, C1185 [DSC/RSC]
C1194
LF outlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1198
LF inlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1210
RF outlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1214
RF inlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1222
ABS wheel-speed sensor system
(See DTC C1222 [DSC/RSC].)
C1233
LF ABS wheel-speed sensor/ABS sensor rotor system
(See DTC C1233, C1234, C1235, C1236 [DSC/RSC].)
C1234
RF ABS wheel-speed sensor/ABS sensor rotor system
(See DTC C1233, C1234, C1235, C1236 [DSC/RSC].)
C1235
RR ABS wheel-speed sensor/ABS sensor rotor system
(See DTC C1233, C1234, C1235, C1236 [DSC/RSC].)
C1236
LR ABS wheel-speed sensor/ABS sensor rotor system
(See DTC C1233, C1234, C1235, C1236 [DSC/RSC].)
C1242
LR outlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1246
RR outlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1250
LR inlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1254
RR inlet solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1278
Steering angle sensor system
(See DTC C1278, C1295, U2023 [DSC/RSC].)
C1280
SAS control module system
(See DTC C1280, C1282, C1516, C1950, C2770 [DSC/RSC].)
C1282
SAS control module system
(See DTC C1280, C1282, C1516, C1950, C2770 [DSC/RSC].)
C1288
Brake fluid pressure sensor system
(See DTC C1288 [DSC/RSC]
C1295
Steering angle sensor system
(See DTC C1278, C1295, U2023 [DSC/RSC].)
C1327
Brake fluid level sensor system
(See DTC C1327 [DSC/RSC].)
C1329
RF outlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1330
LR outlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1331
RR outlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1332
LF outlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1333
LR inlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1334
LF inlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1335
RF inlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1336
RR inlet solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1404
RH traction control solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1410
LH traction control solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1446
Brake switch system
(See DTC C1446 [DSC/RSC].)
C1516
SAS control module system
(See DTC C1280, C1282, C1516, C1950, C2770 [DSC/RSC].)
C1527
RH traction control solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1528
LH traction control solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1530
RH stability control solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1531
LH stability control solenoid valve coil system
(See DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531 [DSC/RSC].)
C1730
DSC/RSC HU/CM system
(See DTC B1342, C1730 [DSC/RSC].)
C1950
SAS control module system
(See DTC C1280, C1282, C1516, C1950, C2770 [DSC/RSC].)
C1957
RH stability control solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1958
LH stability control solenoid valve system
(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1404, C1410, C1957, C1958 [DSC/RSC].)
C1963
SAS control module (Yaw rate sensor part) initial point correction error
(See DTC C1963 [DSC/RSC].)
C1991
DSC/RSC sensor (abnormal initialization) system
(See DTC C1991 [DSC/RSC].)
C2770
SAS control module system
(See DTC C1280, C1282, C1516, C1950, C2770 [DSC/RSC].)
U0073
CAN system communication error
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
U0100
Communication error to PCM
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
U0140
Communication error to BCM
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
U0155
Communication error to instrument cluster
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)
(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
U1901
SAS control module system (CAN2 line malfunction)
(See DTC U1901 [DSC/RSC].)
U2023
Steering angle sensor system
(See DTC C1278, C1295, U2023 [DSC/RSC].)


PID/DATA Monitor Table

PID name (definition)

Unit/Condition

Operation condition (reference)

Action
ACCLMTR
G
•  Vehicle stopped or driving at constant speed: 0 G
•  Vehicle is driving at a acceleration: changes 0 G—positive
•  Vehicle is driving at a deceleration: changes 0 G—negative
Perform the DTC inspection for the SAS control module.
(See DTC DISPLAY.)
(See DTC TABLE.)
BOO_ABS
(Brake pedal switch input)
Off/On
•  Brake pedal released: Off
•  Brake pedal depressed: On
Inspect the brake switch.
(See BRAKE SWITCH INSPECTION.)
CCNTABS
(Number of continuous codes)
—
Indicates number of DTC
Perform the DTC inspection.
(See DTC Table.)
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
Perform the DTC inspection for the SAS control module.
(See DTC DISPLAY.)
(See DTC TABLE.)
MCYLI P
MPa, psi
•  Brake pedal depressed: Changes according to the brake fluid pressure
Inspect the brake fluid pressure sensor.
(See BRAKE FLUID PRESSURE SENSOR INSPECTION.)
PMP_MOTOR
(Pump motor output state)
Off/On
•  Pump motor not activated: Off
•  Pump motor activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
PWR_RLY
(Valve relay output state)
Off/On
•  Valve relay not activated: Off
•  Valve relay activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
ROLL_RATE
(Roll rate sensor input)
°/s
•  Vehicle stopped or driving straight: 0 °/s
•  Cornering to left: 0 °/s—positive
•  Cornering to right: 0 °/s—negative
Perform the DTC inspection for the SAS control module.
(See DTC DISPLAY.)
(See DTC TABLE.)
SHIFT_P
(Transaxle gear position input)
Off/On
•  Other than those above: Off
•  Selector lever position P: On
Inspect the TCM.
(See TCM INSPECTION [AW6A-EL, AW6AX-EL].)
SWA_POS
(Steering angle sensor input)
°
•  Steering wheel 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.
(See STEERING ANGLE SENSOR INSPECTION.)
TCS_OFF_SW
(TCS OFF switch input)
Off/On
•  TCS OFF switch is released: Off
•  TCS OFF switch is depressed: On
Inspect the TCS OFF switch.
(See TCS OFF SWITCH INSPECTION.)
V_LF_INL
(Left front inlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_LF_OTL
(Left front outlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_LR_INL
(Left rear inlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_LR_OTL
(Left rear outlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_RF_INL
(Right front inlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_RF_OTL
(Right front outlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_RR_INL
(Right rear inlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_RR_OTL
(Right rear outlet solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_STB_L
(LH stability control solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_STB_R
(RH stability control solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_TRC_L
(LH traction control solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
V_TRC_R
(RH traction control solenoid valve output state)
Off/On
•  Solenoid valve not activated: Off
•  Solenoid valve activated: On
Inspect the DSC/RSC HU/CM.
(See DSC/RSC SYSTEM INSPECTION.)
WSPD_LF
(Left front ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the front ABS wheel-speed sensor.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)
WSPD_LR
(Left rear ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the rear ABS wheel-speed sensor.
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION [2WD].)
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION [4WD].)
WSPD_RF
(Right front ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the front ABS wheel-speed sensor.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)
WSPD_RR
(Right rear ABS wheel-speed sensor input)
KPH, MPH
•  Vehicle stopped: 0 KPH, 0 MPH
•  Vehicle running: vehicle speed
Inspect the rear ABS wheel-speed sensor.
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION [2WD].)
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION [4WD].)
YAW_RATE
°/s
•  Vehicle stopped or driving straight: 0 °/s
•  Cornering to left: Changes 0 °/s—negative
•  Cornering to right: Changes 0 °/s—positive
Perform the DTC inspection for the SAS control module.
(See DTC DISPLAY.)
(See DTC TABLE.)


Active Command Modes Table

Command name

Output part

Operation

Operating condition
PMP_MOTOR
Pump motor
Off/On
Ignition switch at ON
PWR_RLY
Valve relay
SSR_INTL
DSC/RSC sensor initialization
V_LF_INL
LF inlet solenoid valve
V_LF_OTL
LF outlet solenoid valve
V_LR_INL
LR inlet solenoid valve
V_LR_OTL
LR outlet solenoid valve
V_RF_INL
RF inlet solenoid valve
V_RF_OTL
RF outlet solenoid valve
V_RR_INL
RR inlet solenoid valve
V_RR_OTL
RR outlet solenoid valve
V_STB_L
LH stability control solenoid valve
V_STB_R
RH stability control solenoid valve
V_TRC_L
LH traction control solenoid valve
V_TRC_R
RH traction control solenoid valve