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
B1318
Power supply system
B1342
DSC HU/CM (internal malfunction)
B2141
Vehicle data not recorded
B2741
Combined sensor (internal malfunction)
C1093
DSC OFF switch
C1095
Pump motor, motor relay
C1141
LF ABS sensor rotor
C1142
RF ABS sensor rotor
C1143
LR ABS sensor rotor
C1144
RR ABS sensor rotor
C1145
RF ABS wheel-speed sensor
C1155
LF ABS wheel-speed sensor
C1165
RR ABS wheel-speed sensor
C1175
LR ABS wheel-speed sensor
C1233
LF ABS wheel-speed sensor/ABS sensor rotor
C1234
RF ABS wheel-speed sensor/ABS sensor rotor
C1235
RR ABS wheel-speed sensor/ABS sensor rotor
C1236
LR ABS wheel-speed sensor/ABS sensor rotor
C1267
DSC HU/CM (internal malfunction)
C1277
Steering angle sensor
C1279
Combined sensor system
C1280
Combined sensor system
C1281
Combined sensor system
C1282
Combined sensor system
C1288
Brake fluid pressure sensor
C1295
Steering angle sensor
C1306
Steering angle sensor
C1307
Steering angle sensor
C1440
Brake fluid pressure sensor
C1446
Brake switch
C1470
TCS control system
C1730
Brake fluid pressure sensor power supply system
C1994
TCS/DSC control system
C2778
Combined sensor system
C2785
Combined sensor system (unperformed initialization procedure)
U1900
CAN line
U1901
Combined sensor system (CAN2 line malfunction)
U2012
CAN line
U2023
CAN line
U2202
CAN line
U2523
CAN line
U2527
Combined sensor system (CAN2 line malfunction)

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.
-
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.
-
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