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

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

B3E040243000W12

## 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 WDS or equivalent.

## Reading DTCs Procedure

1. Connect the WDS or equivalent to the vehicle DLC-2 connector.

2. Retrieve DTC using the WDS or equivalent.

## Clearing DTCs Procedures

1. After repairs have been made, perform the DTCs reading procedure.

2. Erase DTC using the WDS or equivalent.

3. Ensure that the customer's concern has been resolved.

## PID/Data Monitor and Record Procedure

1. Connect the WDS or equivalent to the vehicle DLC-2 connector.

2. Access and monitor PIDs using the WDS or equivalent.

## Active Command Modes Procedure

1. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector.

2. Turn the ignition switch to the ON position (engine off) or start the engine.

3. Activate active command modes using the WDS or equivalent.

## DTC Table

DTC | System malfunction location | Page
--- | --- | ---
WDS or equivalent
B1317 | Power supply system | (See DTC B1317, B1318 [DSC].)
B1318 | Power supply system | (See DTC B1317, B1318 [DSC].)
B1342 | DSC HU/CM (internal malfunction) | (See DTC B1342, C1267, C1730 [DSC].)
B2141 | Vehicle data not recorded | (See DTC B2141 [DSC].)
B2741 | Combined sensor (internal malfunction) | (See DTC B2741 [DSC].)
C1093 | DSC OFF switch | (See DTC C1093 [DSC].)
C1095 | Pump motor, motor relay | (See DTC C1095 [DSC].)
C1141 | LF ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1142 | RF ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1143 | LR ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1144 | RR ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1145 | RF ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [DSC].)
C1155 | LF ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [DSC].)
C1165 | RR ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [DSC].)
C1175 | LR ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [DSC].)
C1233 | LF ABS wheel-speed sensor/ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1234 | RF ABS wheel-speed sensor/ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1235 | RR ABS wheel-speed sensor/ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1236 | LR ABS wheel-speed sensor/ABS sensor rotor | (See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [DSC].)
C1267 | DSC HU/CM (internal malfunction) | (See DTC B1342, C1267, C1730 [DSC].)
C1277 | Steering angle sensor | (See DTC C1277, C1295, C1306, C1307 [DSC].)
C1279 | Combined sensor system | (See DTC C1279, C1280, C1281, C1282, C2778 [DSC].)
C1280 | Combined sensor system | (See DTC C1279, C1280, C1281, C1282, C2778 [DSC].)
C1281 | Combined sensor system | (See DTC C1279, C1280, C1281, C1282, C2778 [DSC].)
C1282 | Combined sensor system | (See DTC C1279, C1280, C1281, C1282, C2778 [DSC].)
C1288 | Brake fluid pressure sensor | (See DTC C1288, C1440 [DSC].)
C1295 | Steering angle sensor | (See DTC C1277, C1295, C1306, C1307 [DSC].)
C1306 | Steering angle sensor | (See DTC C1277, C1295, C1306, C1307 [DSC].)
C1307 | Steering angle sensor | (See DTC C1277, C1295, C1306, C1307 [DSC].)
C1440 | Brake fluid pressure sensor | (See DTC C1288, C1440 [DSC].)
C1446 | Brake switch | (See DTC C1446 [DSC].)
C1470 | TCS control system | (See DTC C1470, C1994 [DSC].)
C1730 | Brake fluid pressure sensor power supply system | (See DTC B1342, C1267, C1730 [DSC].)
C1994 | TCS/DSC control system | (See DTC C1470, C1994 [DSC].)
C2778 | Combined sensor system | (See DTC C1279, C1280, C1281, C1282, C2778 [DSC].)
C2785 | Combined sensor system (unperformed initialization procedure) | (See DTC C2785 [DSC].)
U1900 | CAN line | (See DTC U1900, U2012, U2023, U2202, U2523 [DSC].)
U1901 | Combined sensor system (CAN2 line malfunction) | (See DTC U1901, U2527 [DSC].)
U2012 | CAN line | (See DTC U1900, U2012, U2023, U2202, U2523 [DSC].)
U2023 | CAN line | (See DTC U1900, U2012, U2023, U2202, U2523 [DSC].)
U2202 | CAN line | (See DTC U1900, U2012, U2023, U2202, U2523 [DSC].)
U2523 | CAN line | (See DTC U1900, U2012, U2023, U2202, U2523 [DSC].)
U2527 | Combined sensor system (CAN2 line malfunction) | (See DTC U1901, U2527 [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. | -
CCNTABS (Number of continuous codes) | - | • DTCs detected: 1-255 • No DTCs detected: 0 | Perform the DTC inspection. | -
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. | -
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. | 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. | AJ, AG
MPRETDR | kPa, psi, Bar | • Brake pedal released: 0 kPa, 0 psi, 0 Bar • 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. | 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. | 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 HU/CM INSPECTION.) | -
TCYC_SW | Depressed/Not_Depressed | • DSC OFF switch depressed: Depressed • DSC OFF switch not depressed: Not_Depressed | Inspect the DSC OFF switch. | 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. | -

## Active Command Modes Table

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