Lexus ES300 (1997 year). Manual - part 398

AB0117 AB0118 AB0119

W02763

H00049

LOCK

ACC

ON

or

Airbag Sensor Assembly

Tc

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–369

521

1997 LEXUS ES300   (RM511U)

4

Check airbag sensor assembly.

PREPARATION:
(a)

Turn ignition switch to LOCK.

(b)

Disconnect negative (–) terminal cable from the battery,
and wait at least 90 seconds.

(c)

Disconnect airbag sensor assembly connector.

(d)

Insert service wire into terminal Tc from back side as
shown.

(e)

Connect airbag sensor assembly connector with service
wire.

(f)

Connect negative (–) terminal cable to battery.

(g)

Turn ignition switch to ACC or ON and wait at least 20 se-
conds.

(h)

Connect service wire of terminal Tc to body ground.

CHECK:
Check operation of SRS warning light.
OK:

SRS waning light comes on.

NOTICE:
Never make a mistake with the terminal connection posi-
tion as this cause a malfunction.

OK 

Check harness between airbag sensor assem-
bly and DLC1.

NG

Replace airbag sensor assembly.

AB0117

W02764

H00050

LOCK

Airbag Sensor Assembly

Tc

(+)

(–)

DI–370

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

522

1997 LEXUS ES300   (RM511U)

If the DTC is displayed without a DTC check procedure, perform the following
troubleshooting.

1

Check resistance between terminal Tc of airbag sensor assembly and body
ground.

PREPARATION:
(a)

Turn ignition switch to LOCK.

(b)

Disconnect negative (–) terminal cable from the battery,
and wait at least 90 seconds.

(c)

Disconnect airbag sensor assembly connector.

CHECK:
Check resistance between terminal Tc of airbag sensor assem-
bly connector.
OK:

Resistance: 1 M

Ω

 or Higher

NG

Repair or replace harness or connector.

OK

Replace airbag sensor assembly.

DI0FP–01

Customer Problem Analysis

Vehicle Brought to Workshop

Problem Symptom Confirmation

Symptom Simulation

Symptom does not occur

Problem Symptom Table

Circuit Inspection

Identification of Problem

Repair

Confirmation Test

End

Titles inside

are titles of pages in this

manual with the page number indicated in the
bottom portion.      See the indicated pages
for detailed explanations.

1

2

3

4

5

7

P. 

DI–372

P. 

DI–374

P. 

IN–17

P. 

DI–375

  –  

DI–394

Symptom occur

6

Parts Inspection

Step 5, 7 : Diagnostic steps permitting the use

of the LEXUS hand–held tester and
LEXUS break–out–box.

–

DIAGNOSTICS

POWER SEAT CONTROL SYSTEM

DI–371

523

1997 LEXUS ES300   (RM511U)

POWER SEAT CONTROL SYSTEM

HOW TO PROCEED WITH TROUBLESHOOTING

Perform troubleshooting in accordance with the procedure on the following page.

DI0FR–01

POWER SEAT CONTROL SYSTEM Check Sheet

Inspector’s name:

Customer’s Name

Date of Vehicle

Registration No.

Registration Year

Frame No.

Odometer Reading

             /               /

km
Mile

How Often does Problem Occurs

                              /                                /

 Continuous       

 Intermittent (      Times a day)

Brought in

 Manual Function

    does not operate.

 Slide             

 Front Vertical             

 Rear Vertical             

 Reclining

 Memory function does not operate.

 Position return function does not stop when brake pedal is depressed.

Date Problem First Occurred

Problem

 Symptom

 Slide                    

 Front Vertical                    

 Rear Vertical

 Does not operate in any conditions

 Only with key inserted

 Only with key not inserted

 Only with memory & return switch 1 or 2

 Return Function

    does not operate.

DI–372

–

DIAGNOSTICS

POWER SEAT CONTROL SYSTEM

524

1997 LEXUS ES300   (RM511U)

CUSTOMER PROBLEM ANALYSIS CHECK