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2008 - MX-5 - Brakes

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

On-Board Diagnostic (OBD) Test Description

Read/clear diagnostic results
PID/Data monitor and record
Active command modes

Reading DTCs Procedure

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

2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.
3. Verify the DTC according to the directions on the screen.
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.

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

2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.
3. Select the applicable PID from the PID table.
4. Verify the PID data according to the directions on the screen.

NOTE:

Active Command Modes Procedure

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

2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.
3. Select the active command modes from the PID table.
4. Perform the active command modes, inspect the operations for each 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, C1730 [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)].)

B2900

Incorrect DSC HU/CM installed

(SeeDTC B2900, C1805 [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)].)

C1134

PCM, TCM communication system

(See DTC C1134 [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 (open circuit) 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 (open circuit) 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 (open circuit) 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 (open circuit) 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 (short to ground) system

(See DTC C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)

C1234

RF ABS wheel-speed sensor (short to ground) system

(See DTC C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)

C1235

RR ABS wheel-speed sensor (short to ground) system

(See DTC C1233, C1234, C1235, C1236 [DYNAMIC STABILITY CONTROL (DSC)].)

C1236

LR ABS wheel-speed sensor (short to ground) 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, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

C1280

Combined sensor system

(See DTC C1279, C1280, C1281, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

C1281

Combined sensor system

(See DTC C1279, C1280, C1281, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

C1282

Combined sensor system

(See DTC C1279, C1280, C1281, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

C1288

Brake fluid pressure sensor system

(See DTC C1288, C1290, C1953 [DYNAMIC STABILITY CONTROL (DSC)].)

C1290

Brake fluid pressure sensor system

(See DTC C1288, 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

RF traction control solenoid valve system

(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)

C1410

LF traction control solenoid valve system

(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)

C1730

DSC HU/CM system

(See DTC B1342, C1730 [DYNAMIC STABILITY CONTROL (DSC)].)

C1805

Incorrect DSC HU/CM installed

(SeeDTC B2900, C1805 [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)].)

C1951

Combined sensor system

(See DTC C1279, C1280, C1281, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

C1952

Combined sensor system

(See DTC C1279, C1280, C1281, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

C1953

Brake fluid pressure sensor system

(See DTC C1288, 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

RF DSC switch solenoid valve system

(See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254, C1400, C1410, C1957, C1958 [DYNAMIC STABILITY CONTROL (DSC)].)

C1958

LF DSC switch 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, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

C1994

DSC control system

(See DTC C1994 [DYNAMIC STABILITY CONTROL (DSC)].)

C2768

Combined sensor system

(See DTC C1279, C1280, C1281, C1282, C1951, C1952, C1959, C2768 [DYNAMIC STABILITY CONTROL (DSC)].)

U0073

CAN system communication error

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

U0100

Communication error to PCM

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

U0101

Communication error to TCM

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

U0155

Communication error to instrument cluster

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

U1900

Communication error to other module

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

U2023

Abnormal message from PCM

(See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)


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: Approx. 12.2 V

  • Idling: Approx. 14.1 V

Inspect power supply circuit.

(See DSC SYSTEM INSPECTION.)

J

ABSLF_I

(Left front inlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSLF_O

(Left front outlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSLR_I

(Left rear inlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSLR_O

(Left rear outlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSPMPRLY

(Motor relay output state)

On/Off

  • Relay activated: On

  • Relay not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSRF_I

(Right front inlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSRF_O

(Right front outlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSRR_I

(Right rear inlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSRR_O

(Right rear outlet solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

ABSVLVRLY

(Fail-safe relay output state)

On/Off

  • Fail-safe relay is

    activated: On

  • Fail-safe relay is deactivated: Off

Inspect DSC HU/CM.

(See DSC HU/CM INSPECTION)

BOO_ABS

(Brake pedal switch input)

On/Off

  • Brake pedal depressed: On

  • Brake pedal released: Off

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.

AI

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)

On/Off

  • Pump motor activated: On

  • Pump motor not activated: Off

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):

  • 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

(LF stability control solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

V_STB_R

(RF stability control solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

V_TRC_L

(LF traction control solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM INSPECTION.)

V_TRC_R

(RF traction control solenoid valve output state)

On/Off

  • Solenoid valve activated: On

  • Solenoid valve not activated: Off

Inspect the DSC HU/CM.

(See DSC HU/CM 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.

AA


Active Command Modes Table



Command name

Output part

Operation

Operating condition

LATACCEL

Combined sensor (lateral acceleration) initialization

FALSE/TRUE

Ignition switch at ON

LF_INLET

LF inlet solenoid valve

On/Off

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

On/Off

TRAC OFF

DSC OFF light

V_STB_L

LF stability control solenoid valve

V_STB_R

RF stability control solenoid valve

V_TRC_L

LF traction control solenoid valve

V_TRC_R

RF traction control solenoid valve

YAWRATE

Combined sensor (yaw rate) initialization




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