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.

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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. (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.

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 [DYNAMIC STABILITY CONTROL (DSC)].)
B1318 | Power supply system | (See DTC B1317, B1318 [DYNAMIC STABILITY CONTROL (DSC)].)
B1342 | DSC HU/CM system | (See DTC B1342 [DYNAMIC STABILITY CONTROL (DSC)].)
B1484 | Brake switch system | (See DTC B1484, C1954 [DYNAMIC STABILITY CONTROL (DSC)].)
B2477 | DSC HU/CM configuration | (See DTC B2477 [DYNAMIC STABILITY CONTROL (DSC)].)
B2741 | Combined sensor system | (See DTC B2741, C2768, U2516 [DYNAMIC STABILITY CONTROL (DSC)].)
C1093 | DSC OFF switch system | (See DTC C1093 [DYNAMIC STABILITY CONTROL (DSC)].)
C1095 | Pump motor, motor relay system | (See DTC C1095, C1096 [DYNAMIC STABILITY CONTROL (DSC)].)
C1096 | Pump motor, motor relay system | (See DTC C1095, C1096 [DYNAMIC STABILITY CONTROL (DSC)].)
C1141 | LF ABS sensor rotor system | (See DTC C1141, C1142, C1143, C1144 [DYNAMIC STABILITY CONTROL (DSC)].)
C1142 | RF ABS sensor rotor system | (See DTC C1141, C1142, C1143, C1144 [DYNAMIC STABILITY CONTROL (DSC)].)
C1143 | LR ABS sensor rotor system | (See DTC C1141, C1142, C1143, C1144 [DYNAMIC STABILITY CONTROL (DSC)].)
C1144 | RR ABS sensor rotor system | (See DTC C1141, C1142, C1143, C1144 [DYNAMIC STABILITY CONTROL (DSC)].)
C1145 | RF ABS wheel-speed sensor system | (See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1148 | RF ABS wheel-speed sensor/ABS sensor rotor system | (See DTC C1148, C1158, C1168, C1178 [DYNAMIC STABILITY CONTROL (DSC)].)
C1155 | LF ABS wheel-speed sensor system | (See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1158 | LF ABS wheel-speed sensor/ABS sensor rotor system | (See DTC C1148, C1158, C1168, C1178 [DYNAMIC STABILITY CONTROL (DSC)].)
C1165 | RR ABS wheel-speed sensor system | (See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1168 | RR ABS wheel-speed sensor/ABS sensor rotor system | (See DTC C1148, C1158, C1168, C1178 [DYNAMIC STABILITY CONTROL (DSC)].)
C1175 | LR ABS wheel-speed sensor system | (See DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)].)
C1178 | LR ABS wheel-speed sensor/ABS sensor rotor system | (See DTC C1148, C1158, C1168, C1178 [DYNAMIC STABILITY CONTROL (DSC)].)
C1186 | Valve relay system | (See DTC C1186, C1266 [DYNAMIC STABILITY CONTROL (DSC)].)
C1194 | LF outlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1198 | LF inlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1210 | RF outlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1214 | RF inlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1222 | ABS wheel-speed sensor (slip monitor) system | (See DTC C1222 [DYNAMIC STABILITY CONTROL (DSC)].)
C1233 | LF ABS wheel-speed sensor system | (See DTC C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1234 | RF ABS wheel-speed sensor system | (See DTC C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1235 | RR ABS wheel-speed sensor system | (See DTC C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1236 | LR ABS wheel-speed sensor system | (See DTC C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)
C1242 | LR outlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1246 | RR outlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1250 | LR inlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1254 | RR inlet solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1266 | Valve relay system | (See DTC C1186, C1266 [DYNAMIC STABILITY CONTROL (DSC)].)
C1279 | Combined sensor system | (See DTC C1279, C1280, C1281, C1952, C1959 [DYNAMIC STABILITY CONTROL (DSC)].)
C1280 | Combined sensor system | (See DTC C1279, C1280, C1281, C1952, C1959 [DYNAMIC STABILITY CONTROL (DSC)].)
C1281 | Combined sensor system | (See DTC C1279, C1280, C1281, C1952, C1959 [DYNAMIC STABILITY CONTROL (DSC)].)
C1290 | Brake fluid pressure sensor system | (See DTC C1290, C1953 [DYNAMIC STABILITY CONTROL (DSC)].)
C1295 | Steering angle sensor system | (See DTC C1295, C1307, C1937, C1938, C1956 [DYNAMIC STABILITY CONTROL (DSC)].)
C1306 | Steering angle sensor (abnormal initialization) system | (See DTC C1306 [DYNAMIC STABILITY CONTROL (DSC)].)
C1307 | Steering angle sensor system | (See DTC C1295, C1307, C1937, C1938, C1956 [DYNAMIC STABILITY CONTROL (DSC)].)
C1400 | RH traction control solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1410 | LH traction control solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1937 | Steering angle sensor system | (See DTC C1295, C1307, C1937, C1938, C1956 [DYNAMIC STABILITY CONTROL (DSC)].)
C1938 | Steering angle sensor system | (See DTC C1295, C1307, C1937, C1938, C1956 [DYNAMIC STABILITY CONTROL (DSC)].)
C1952 | Combined sensor system | (See DTC C1279, C1280, C1281, C1952, C1959 [DYNAMIC STABILITY CONTROL (DSC)].)
C1953 | Brake fluid pressure sensor system | (See DTC C1290, C1953 [DYNAMIC STABILITY CONTROL (DSC)].)
C1954 | Brake switch system | (See DTC B1484, C1954 [DYNAMIC STABILITY CONTROL (DSC)].)
C1956 | Steering angle sensor system | (See DTC C1295, C1307, C1937, C1938, C1956 [DYNAMIC STABILITY CONTROL (DSC)].)
C1957 | RH stability control solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1958 | LH stability control solenoid valve system | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)
C1959 | Combined sensor system | (See DTC C1279, C1280, C1281, C1952, C1959 [DYNAMIC STABILITY CONTROL (DSC)].)
C1994 | DSC control system | (See DTC C1994 [DYNAMIC STABILITY CONTROL (DSC)].)
C2768 | Combined sensor system | (See DTC B2741, C2768, U2516 [DYNAMIC STABILITY CONTROL (DSC)].)
U0073 | CAN system communication error | (See DTC U0073, U0100, U0101, U0155, U1900 [DYNAMIC STABILITY CONTROL (DSC)].)
U0074 | Combined sensor system (CAN2 line malfunction) | (See DTC U0074, U0123, U1901 [DYNAMIC STABILITY CONTROL (DSC)].)
U0100 | Communication error to PCM | (See DTC U0073, U0100, U0101, U0155, U1900 [DYNAMIC STABILITY CONTROL (DSC)].)
U0101 | Communication error to TCM | (See DTC U0073, U0100, U0101, U0155, U1900 [DYNAMIC STABILITY CONTROL (DSC)].)
U0123 | Combined sensor system (CAN2 line malfunction) | (See DTC U0074, U0123, U1901 [DYNAMIC STABILITY CONTROL (DSC)].)
U0155 | Communication error to instrument cluster | (See DTC U0073, U0100, U0101, U0155, U1900 [DYNAMIC STABILITY CONTROL (DSC)].)
U1900 | Communication error to other module | (See DTC U0073, U0100, U0101, U0155, U1900 [DYNAMIC STABILITY CONTROL (DSC)].)
U1901 | Combined sensor system (CAN2 line malfunction) | (See DTC U0074, U0123, U1901 [DYNAMIC STABILITY CONTROL (DSC)].)
U2023 | Abnormal message from PCM | (See DTC U2023 [DYNAMIC STABILITY CONTROL (DSC)].)
U2516 | Combined sensor system | (See DTC B2741, C2768, U2516 [DYNAMIC STABILITY CONTROL (DSC)].)

PID/DATA Monitor Table

PID name (definition) | Unit/Condition | Operation condition (reference) | Action | DSC HU/CM terminal
--- | --- | --- | --- | ---
ABS_VOLT (System battery voltage value) | V | • Ignition switch at ON position: Approx. 12 V • Idling: Approx. 14 V | Inspect power supply circuit. (See DSC HU/CM INSPECTION.) | J
ABSLF_I (Left front inlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSLF_O (Left front outlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSLR_I (Left rear inlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSLR_O (Left rear outlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSPMPRLY (Motor relay output state) | Off/On | • Relay not activated: Off • Relay activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSRF_I (Right front inlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSRF_O (Right front outlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSRR_I (Right rear inlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSRR_O (Right rear outlet solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
ABSVLVRLY (Fail-safe relay output state) | Off/On | • Fail-safe relay is deactivated: Off • Fail-safe relay is activated: On | Inspect the DSC HU/CM. (See DSC SYSTEM INSPECTION.) | —
BOO_ABS (Brake pedal switch input) | Off/On | • Brake pedal released: Off • Brake pedal depressed: On | Inspect the brake switch. | N
CCNTABS (Number of continuous codes) | — | • DTCs detected: 1—255 • No DTCs detected: 0 | Perform the DTC inspection. | —
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. | —
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. | F, E
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. | G, H
MCYLI P | Pa, psi | • Brake pedal depressed: Changes according to the brake fluid pressure | Inspect the brake fluid pressure sensor. | —
PMP_MOTOR (Pump motor output state) | Off/On | • Pump motor not activated: Off • Pump motor activated: On | 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. | M, O
RPM (Engine speed signal input) | RPM | • Engine stopped: 0 RPM • Engine speed at 3,000 rpm: 3,000 RPM | Inspect the PCM. Inspect the instrument cluster. | —
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. | I, L
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. | —
TPI | % | • Closed throttle position: 0% • Wide open throttle: Changes according to throttle valve opening angle | Inspect the throttle position sensor. | —
V_STB_L (LH stability control solenoid valve output state) | Off/On | • Solenoid valve not activated: Off • Solenoid valve activated: On | Inspect the DSC HU/CM. (See DSC 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 HU/CM. (See DSC 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 HU/CM. (See DSC 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 HU/CM. (See DSC SYSTEM INSPECTION.) | —
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. | —

Active Command Modes Table

Command name | Output part | Operation | Operating condition
--- | --- | --- | ---
LATACCEL | Combined sensor (lateral acceleration) initialization | FALSE/TRUE | Ignition switch at ON position
LF_INLET | LF inlet solenoid valve | Off/On
LF_OUTLET | LF outlet solenoid valve
LR_INLET | LR inlet solenoid valve
LR_OUTLET | LR outlet solenoid valve
PMP_MOTOR | Pump motor
RF_INLET | RF inlet solenoid valve
RF_OUTLET | RF outlet solenoid valve
RR_INLET | RR inlet solenoid valve
RR_OUTLET | RR outlet solenoid valve
SAS_CAL | Steering angle sensor initialization | FALSE/TRUE
STAB_IND | DSC indicator light | Off/On
TRAC OFF | DSC OFF light
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
YAWRATE | Combined sensor (yaw rate) initialization