Lexus ES300 (2002 year). Manual - part 293

0529E-03

05-300

-

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

453

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

DIAGNOSTIC TROUBLE CODE CHART

NOTICE:
Before replacing or removing the part, turn the ignition switch OFF.
HINT:

Using SST 09843-18040, connect the terminals Tc and CG of DLC3.

If any abnormality is not found on inspected parts, inspect the ECU and wire harness.

If a malfunction code is displayed during the DTC check, check the circuit indicated by DTC. For details
of each code, turn to the pages in the ”See page” for respective ”DTC No.” in the DTC chart.

DTC chart of ABS:

DTC No.

(See Page)

Detection Item

Trouble Area

C0200 / 31*

1

(

05-310

)

Right front wheel speed sensor signal malfunction

C0205 / 32*

1

(

05-310

)

Left front wheel speed sensor signal malfunction

Right front, left front, right rear, left rear speed sensor

E

h

d

i

it

C0210 / 33*

1

(

05-315

)

Right rear wheel speed sensor signal malfunction

Each speed sensor circuit

Sensor rotor

C0215 / 34*

1

(

05-315

)

Left rear wheel speed sensor signal malfunction

C0226 / 21

(

05-319

)

Open or short circuit in brake actuator solenoid circuit 

(SFR circuit)

Brake actuator

SFRH or SFRR circuit

C0236 / 22

(

05-319

)

Open or short circuit in brake actuator solenoid circuit 

(SFL circuit)

Brake actuator

SFLH or SFLR circuit

C0246 / 23

(

05-319

)

Open or short circuit in brake actuator solenoid circuit 

(SRR circuit)

Brake actuator

SRRH or SRRR circuit

C0256 / 24

(

05-319

)

Open or short circuit in brake actuator solenoid circuit 

(SRL circuit)

Brake actuator

SRLH or SRLR circuit

C0273 / 13*

1

(

05-322

)

Open circuit in ABS MTR relay circuit

Fusible link block

ABS No.3 fuse

C0274 / 14

(

05-322

)

Short circuit in ABS MTR relay circuit

ABS No.3 fuse

ABS MTR relay

ABS MTR relay circuit

C0278 / 11

(

05-326

)

Open circuit in ABS SOL relay circuit

ABS SOL relay

C0279 / 12

(

05-326

)

Short circuit in ABS SOL relay circuit

ABS SOL relay

ABS SOL relay circuit

C1225 / 25

(

05-342

)

Open or short circuit in brake actuator solenoid circuit 

(SM circuit)

Brake actuator

SM1 or SM2 circuit

C1226 / 26

(

05-342

)

Open or short circuit in brake actuator solenoid circuit 

(SRM circuit)

Brake actuator

SRM1 or SRM2 circuit

C1227 / 27

(

05-342

)

Open or short circuit in brake actuator solenoid circuit 

(SRC circuit)

Brake actuator

SRC1 or SRC2 circuit

C1235 / 35

(

05-310

)

Foreign matter is attached on the tip of the right front sensor

C1236 / 36

(

05-310

)

Foreign matter is attached on the tip of the left front sensor

Right front, left front, right rear, left rear speed sensor

C1238 / 38

(

05-315

)

Foreign matter is attached on the tip of the right rear sensor

Right front, left front, right rear, left rear s eed sensor

Sensor rotor

C1239 / 39

(

05-315

)

Foreign matter is attached on the tip of the left rear sensor

-

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

05-301

454

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

C1241 / 41

(

05-350

)

Low battery voltage

Power source harness and connector

Battery

Charging system

Power source circuit

C1243 / 43*

1

(

05-353

)

Malfunction in deceleration sensor (constant output)

Deceleration sensor

Wire harness for deceleration sensor system

C1244 / 44

(

05-348

)

Open or short circuit in deceleration sensor circuit

Deceleration sensor

Deceleration sensor circuit

C1245 / 45*

1

(

05-353

)

Malfunction in deceleration sensor (output error)

Deceleration sensor

Wire harness for deceleration sensor system

C1246 / 46*

2

(

05-356

)

Malfunction in master cylinder pressure sensor

Master cylinder pressure sensor

Master cylinder pressure sensor circuit

C1249 / 49

(

05-359

)

Open circuit in stop light switch circuit

Stop light bulb

Stop light switch circuit

C1251 / 51*

1

(

05-361

)

ABS pump motor is locked

Open circuit in pump motor circuit

ABS pump motor

Always ON

(

05-363

)

Malfunction in skid control ECU

Power source circuit

ABS warning light circuit

Skid control ECU

*1, *2:
Even after the troubled areas are repaired, ABS warning light will not go OFF unless the following operations
are performed.

*1:
(1)

Drive the vehicle at 20 km/h (12 mph) for 30 seconds or more and check that the ABS warning
light goes off.

(2)

Clear the DTC (See page 

05-288

).

*2:
(1)

Keep the vehicle in the stationary condition for 5 seconds or more and depress the brake pedal
lightly 2 or 3 times.

(2)

Drive the vehicle at the vehicle speed 50 km/h (31 mph) and keep depressing the brake pedal
strongly for about 3 seconds.

(3)

Repeat the above operation 3 times or more and check that the ABS warning light goes off.

(4)

Clear the DTC (See page 

05-288

).

HINT:
There is a case that hand-held tester cannot be used when ABS warning light is always on.

05-302

-

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

455

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

DTC Chart of VSC:

DTC No.

(See Page)

Detection Item

Trouble Area

C1201 / 51

(

05-331

)

ECM system malfunction

Engine control system

C1202/52

(

05-332

)

Brake fluid level low open circuit in brake fluid level warning
switch circuit

Brake fluid level

Brake fluid level warning switch

Brake fluid level warning switch circuit

C1203 / 53

(

05-334

)

ECM communication circuit malfunction

TRC+ or TRC - circuit

ENG+ or ENG - circuit

ECM

C1210 / 36

(

05-336

)

Zero point calibration of yaw rate sensor undone

Yaw rate sensor

Yaw rate sensor circuit

P range switch circuit

C1223 / 43

(

05-339

)

Malfunction in ABS control system

ABS control system

C1224 / 44

(

05-340

)

Open or short circuit in NE signal circuit

NEO circuit

ECM

Skid control  ECU

C1231 / 31

(

05-345

)

Malfunction in steering angle sensor

Steering angle sensor

Steering angle sensor circuit

+BI circuit

C1232 / 32

(

05-348

)

Malfunction in deceleration sensor

Deceleration sensor

Deceleration sensor circuit

C1233 / 33

(

05-336

)

Open or short circuit in yaw rate sensor circuit

Yaw  rate sensor

Yaw rate sensor circuit

C1234 / 34

(

05-336

)

Malfunction in yaw rate sensor

Yaw  rate sensor

Yaw rate sensor circuit

C1335 / 35

(

05-345

)

Open circuit in steering angle sensor

Steering angle sensor

Steering angle sensor circuit

C1336 / 39

(

05-353

)

Zero point calibration of deceleration sensor undone

Deceleration sensor

Deceleration sensor circuit

Zero point calibration not done

C1360 / 61

(

05-356

)

Malfunction in comparative master cylinder pressure sensor

Master cylinder pressure sensor

Master cylinder pressure sensor circuit

Always ON

(

05-366

)

Malfunction of skid control ECU

Battery

IC regulator

Power source circuit

Skid control  ECU

HINT:
There is a case that hand-held tester cannot be used when ABS and/or VSC warning light is always on.

-

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

05-303

456

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

DTC of sensor check function:

Code No.

Diagnosis

Trouble Area

C1271 / 71

Low output voltage of right front speed sensor

Right front speed sensor

Sensor installation

Sensor rotor

C1272 / 72

Low output voltage of left front speed sensor

Left front speed sensor

Sensor installation

Sensor rotor

C1273 / 73

Low output voltage of right rear speed sensor

Right rear speed sensor

Sensor installation

Sensor rotor

C1274 / 74

Low output voltage of left rear speed sensor

Left rear speed sensor

Sensor installation

Sensor rotor

C1275 / 75

Abnormal change in output voltage of right front speed sen-
sor

Right front sensor rotor

C1276 / 76

Abnormal change in output voltage of left front speed sen-
sor

Left front speed sensor rotor

C1277 / 77

Abnormal change in output voltage of right rear speed sen-
sor

Right rear sensor rotor

C1278 / 78

Abnormal change in output voltage of left rear speed sensor

Left rear speed sensor rotor

C1279 / 79

Deceleration sensor is faulty

Deceleration sensor

Sensor installation

C1281 / 81

Master cylinder pressure sensor output signal is faulty

Master cylinder pressure sensor