Lexus ES300 (1997 year). Manual - part 354

Q07595

2

4

–

DIAGNOSTICS

AUTOMATIC TRANSAXLE

DI–193

345

1997 LEXUS ES300   (RM511U)

Check and replace the combination meter
(See page 

BE–58

).

INSPECTION PROCEDURE
O/D OFF indicator light does not light up

1

Check O/D main switch.

PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
Check continuity between terminals 2 and 4 of O/D main switch
connector.
OK:

O/D main switch

Resistance

ON

∞

 

Ω

 (open)

OFF

0 

Ω

 (continuity)

NG

Replace the O/D main switch.

OK

2

Check harness and connector between O/D OFF indicator light and  O/D main
switch, O/D OFF indicator light and ECM (See page 

IN–27

).

NG

Repair or replace the harness or connector.

OK

Check and replace the ECM.

DI0AB–01

Vehicle Brought to Workshop

Customer Problem Analysis

P. 

DI–195

Check and Clear DTC (Pre–check)

P. 

DI–196

Items inside

are titles of pages in this manual,

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

Problem Symptom Confirmation

Symptom Simulation

P. 

IN–17

 

Symptom
does not occur

Symptom
occurs

DTC Check

P. 

DI–196

Sensor Check

Circuit Inspection

P. 

DI–204

 

∼

 

DI–228

DTC Chart
P. 

DI–200

Malfunction code

Problem Symptoms Table

P. 

DI–200

Identification of Problem

Normal code

Repair

Confirmation Test

End

1

2

3

4

5

6

7

8

9

10

11

Step 2, 5, 11:

Diagnostic steps permitting the use of the
LEXUS hand–held tester.

Parts Inspection

DI–194

–

DIAGNOSTICS

ELECTRIC MODULATED SUSPENSION

346

1997 LEXUS ES300   (RM511U)

ELECTRIC MODULATED SUSPENSION

HOW TO PROCEED WITH TROUBLESHOOTING

Troubleshoooting  in accordance with the procedure on the following pages.

DI0AC–01

:

Customer’s Name

Date Vehicle
Brought In

Registration Year

Registration No.

Frame No.

Odometer Reading

/              /

/              /

Date Problem First Occurred

Frequency Problem Occurs

/                            /

DTC Check

1st Time

2nd Time

Normal Code

Malfunction Code (Code         )

Normal Code

Malfunction Code (Code         )

Symptoms

km

miles

Anti–roll control does not operate

Sometimes (   times per   day, month)

Constant
Once only

Fine

Snowy

Cloudy

Rainy

Hot

Various/ Others

Weather

Outdoor Temperature

Place

Cold   (Approx.          

°

F(      

°

C))

Cool

Warm

Others (              )

Suburbs

Rough Road

Inner City

Hill (Up, Down)

Highway

Condtions at

Time of Problem

Occurrence

Malfunction in
damping force
control

Anti–squat control does not operate

Anti–dive control does not operate
High speed control does not operate

Bounding control does not operate

Others (                                      )

Others

ELECTRONIC MODULATED SUSPENSION Check Sheet

Inspector’s
Name

–

DIAGNOSTICS

ELECTRIC MODULATED SUSPENSION

DI–195

347

1997 LEXUS ES300   (RM511U)

CUSTOMER PROBLEM ANALYSIS CHECK

DI0AD–01

W03868

E1

TEM

–

+

DLC2

F00007 I00169

F00287

DLC1

E1

Tc

DLC2

Tc

E1

W03868

DLC2

E1

–

TEM

+

W03869

0.25 sec.

Normal code

Light OFF

Light ON

0.25 sec.

W03882

2.5 sec.

Repeat

1

Light ON

Malfunction Code (Example Code 21, 31)

Light OFF

4.5 sec.

0.5 sec.

1.5 sec.

0.5 sec.

1

2

3

DI–196

–

DIAGNOSTICS

ELECTRIC MODULATED SUSPENSION

348

1997 LEXUS ES300   (RM511U)

PRE–CHECK

1.

DIAGNOSIS SYSTEM

(a)

TEM OUTPUT CHECK (LED LIGHTENING CHECK)
(1)

Connect the LED to terminals TEM and E1 of DLC2.

NOTICE:If connected reversely, the LED does not light.
HINT:Use the LED whose recommended operating current is
10 – 20 mA.

(2)

Turn the ignition switch ON, and check that the LED
lights for about 2 seconds.

HINT:
If the LED does not light, inspect the TEM circuit
(See page 

DI–224

).

(b)

DTC CHECK
(1)

Check the battery positive voltage.
Battery positive voltage: 10 – 14 V (When is
stopped the engine)

(2)

After driving the vehicle, using SST, connect be-
tween terminals Tc and E1of DLC2 or DLC1.

SST

09843–18020

HINT:

Do not stop the engine.

In this condition, the ignition switch is ON.

NOTICE:The wrong connection of the connector may
cause malfunction. Use extreme caution when connecting
the connector.

(3)

Connect the LED to terminals TEM and E1 of DLC2.

(4)

Check the number that the LED blinks.

When the code is normal, the LED comes on for
0.25 sec. and goes off for 0.25 sec. repeatedly.

When more than 2 diagnosis codes are detected,
the diagnosis codes are displayed in the order form
the smallest number.

If no code appears, inspect the diagnostic circuit
(See page 

DI–226

).

Code are explained in the code table on page

DI–200

.