Lexus ES300 (2002 year). Manual — part 298

C52361

Ts

CG

BR3904

0.13 sec.

ON

OFF

0.13 sec.

05-244

-

DIAGNOSTICS

ABS WITH EBD SYSTEM

397

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

5.

SPEED SENSOR SIGNAL CHECK

HINT:

If the ignition switch is turned from ON to ACC or LOCK
during test mode, DTC of sensor check function will be
erased.

During test mode, ECU records all DTC of sensor check
function. By preforming sensor signal check, the codes
are erased if normality is confirmed. The codes left over
are the codes where abnormality was found.

(a)

In case of not using hand-held tester:
Check the speed sensor signal.
(1)

Turn the ignition switch ON.

(2)

Using SST, connect the terminals Ts and CG of
DLC3.

SST

09843-18040

(3)

Start the engine.

(4)

Check that the ABS warning light blinks.

HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit and Ts circuit (See page

05-275

,

05-277

and

05-282

).

(5)

Drive the vehicle straight forward.

HINT:
Drive the vehicle faster than 45 km/h (28 mph) for several sec.

(6)

Stop the vehicle.

(7)

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

SST

09843-18040

BR3893

ON

7

2

7

6

OFF

Malfunction Code (Example Code 72, 76)

0.5 sec.

4 sec.

Repeat

0.5 sec.

1.5 sec.

2.5 sec.

0.5 sec. 0.5 sec.

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DIAGNOSTICS

ABS WITH EBD SYSTEM

05-245

398

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

(8)

Read the number of blinks of the ABS warning light.

HINT:

See the list of DTC shown on the

05-246

.

If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).

If 2 or more malfunctions are indicated at the same time,
the lowest numbered code will be displayed.

(9)

After doing the check, turn the ignition switch OFF,
and remove the SST from the DLC3.

SST

09843-18040

(b)

In case of using hand-held tester:
Check the sensor signal.
(1)

Do step (3) to (6) on the previous page.

(2)

Read the DTC by following the prompts on the tes-
ter screen.

HINT:
Please refer to the hand-held tester operator’s manual for fur-
ther details.

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

05-315

468

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

DTC

C0210/33 RIGHT REAR SPEED SENSOR CIRCUIT

DTC

C0215/34 LEFT REAR SPEED SENSOR CIRCUIT

DTC

C1238/38 FOREIGN MATTER IS ATTACHED ON TIP OF

RIGHT REAR SENSOR

DTC

C1239/39 FOREIGN MATTER IS ATTACHED ON TIP OF

LEFT REAR SENSOR

CIRCUIT DESCRIPTION

Refer to DTC C0200/31, C0205/32, C1235/35, C1236/36 on page

05-310

.

DTC No.

DTC Detecting Condition

Trouble Area

C0210/33

C0215/34

Detection of any of conditions 1. through 3.:

1. At vehicle speed of 10 km/h (6 mph) or more, pulses are

not input for 15 sec.

2. Momentary interruption of the speed sensor signal oc-

curs at least 7 times in the time between switching the

ignition switch ON and switching it OFF.

3. The condition that the speed sensor signal circuit is

open continues for 0.5 sec. or more.

Right rear and left rear speed sensor

Each speed sensor circuit

Speed sensor rotor

C1238/38

C1239/39

At the vehicle speed of 20 km/h (12 mph) or more, the
condition that noise is included in the speed sensor signal
continues for 5 sec. or more.

Right rear and left rear speed sensor

Speed sensor rotor

HINT:
DTC No. C0210/33, C1238/38 is the right rear speed sensor.
DTC No. C0215/34, C1239/39 is the left rear speed sensor.

0529J-03

F40883

Skid Control ECU

2

22

RL+

S7

A37
ABS Speed Sensor
Rear RH

1

23

RL-

16

RR+

15

RR-

IA3

8

3

IO5

15

R

G

P

L

2

1

A36
ABS Speed Sensor
Rear LH

R

G

P

L

S7

S7

S7

IA3

14

IO5

05-316

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

469

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:
Start the inspection from step 1 in case of using hand-held tester and start from step 2 in case of not using
hand-held tester.

1

READ VALUE OF HAND-HELD TESTER(SPEED SENSOR OUTPUT VALUE)

(a)

Select the item ”WHEEL SPEED RL (RR)” in the DATA LIST and read its value displayed on the hand-
held tester.

(b)

Check that there is no difference between the speed value output from the speed sensor displayed
on the hand-held tester and the speed value displayed on the speedometer when driving the vehicle.
OK: There is almost no difference from the displayed speed value.

HINT:
There is tolerance of

±

10 % in the speedometer indication.

OK

CHECK AND REPLACE SKID CONTROL ECU
ASSY

NG