Lexus ES300 (2002 year). Service manual — part 289

0529D-03

05-284

-

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

437

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

ABS WITH EBD & BA & TRAC & VSC SYSTEM

HOW TO PROCEED WITH TROUBLESHOOTING

1

Vehicle Brought to Workshop

2

Customer Problem Analysis (See page

05-286

)

3

Check and Clear DTCs (See page

05-288

)

4

Problem Symptom Confirmation

Symptom does not occur: Go to step 5

Symptom occur: Go to step 6

5

Symptom Simulation (See page

01-21

)

6

DTC Check (See page

05-288

)

There is no output: Go to step 7

There is output: Go to step 8

7

Problem Symptoms Table (See page

05-308

)

Check for fluid leakage and Go to step 10

8

DTC Chart (See page

05-300

)

9

Circuit Inspection (See page

05-310

-

05-382

)

10

Identification of Problem

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

05-285

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2002 LEXUS ES300 REPAIR MANUAL (RM911U)

11

Repair

12

Confirmation Test

End

HINT:
Step 3, 6, 9, 12:
Diagnostic steps permitting the use of the hand-held tester.
Fail safe function:
When a failure occurs in the ABS & BA & TRAC & VSC systems, the ABS warning light, the VSC warning
light and the TRAC OFF indicator light turns on and the ABS & BA & TRAC & VSC operations are prohibited.
In addition to this, when there failure that disables the EBD operation, the brake warning light also turns on
and the EBD operation is prohibited.

052AX-03

ABS & EBD & BA Check Sheet

Inspector’s

Name

:

Customer’s Name

Date Vehicle
Brought In

Registration Date

Registration No.

Frame No.

Odometer Reading

/ /

/ /

Date Problem First Occurred

Frequency Problem Occurs

/ /

Continuously

Intermittently ( times a day)

ABS does not operate.

ABS does not operate efficiently.

ABS Warning Light
Abnormal

Remains ON

Does not Light Up

DTC Check

1st Time

2nd Time

Normal Code

Malfunction Code (Code )

Normal Code

Malfunction Code (Code )

Symptoms

km

miles

Brake Warning
Light Abnormal

(PKB released)

Remains ON

Does not Light Up

BA does not operate.

EBD does not operate.

STOP LIGHT SW

SYSTEM

Freeze Frame Data

#IG ON

VEHICLE SPD

ON

OFF

NO SYS

ABS

BA

FAIL SF

km/h

MPH

05-286

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

439

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

CUSTOMER PROBLEM ANALYSIS CHECK

Inspector’s

Name

:

Customer’s Name

Date Vehicle
Brought In

Registration Date

Registration No.

Frame No.

Odometer Reading

/ /

/ /

Date Problem First Occurred

Frequency Problem Occurs

/ /

Continuous

Intermittent ( times a day)

TRAC does not operate. (Wheels spin when starting rapidly.)

Displays

Does not Display

DTC Check

1st Time

2nd Time

Normal Code

Malfunction Code (Code )

Normal Code

Malfunction Code (Code )

Symptoms

km

miles

Light Abnormal

TRAC OFF Indicator

Light Abnormal

SLIP Indicator

Remains ON

Does not Light Up

Check Item

Normal

Malfunction Code (Code )

Normal

Malfunction Code (Code )

ABS Warning Light

Malfunction
Indicator Light

TRAC & VSC Check Sheet

Remains ON

Does not Light Up

VSC does not operate. (Wheels sideslip at the time of sharp turning.)

VSC Warning
Indicator Abnormal

Skid Control
Buzzer Abnormal

Does not Sound

Sounds

VSC/TRC OFF SW

SYSTEM

Freeze Frame Data

SHIFT POSITION

YAW RAT

ON

OFF

VSC/TRC

P,N

R

D

deg/s

V

FAIL

2

3

4

L

MAS CYL PRESS

THROTTLE

MAS PRESS GRADE

G (RIGHT&LEFT)

G (BACK&FORTH)

STEERING ANG

deg

deg

MPa/s

G

G

-

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

05-287

440

2002 LEXUS ES300 REPAIR MANUAL (RM911U)