Lexus ES300 (2002 year). Manual - part 341

-

DIAGNOSTICS

ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]

05-415

568

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

2

PERFORM ACTIVE TEST BY OBD II SCAN TOOL OR HAND-HELD TESTER

(a)

Warm up the engine.

(b)

Turn the ignition switch OFF.

(c)

Connect the OBD II scan tool or Hand-held tester to the DLC3.

(d)

Turn the ignition switch ON and push the OBD II scan tool or Hand-held tester main SW ON.

(e)

Select the item ”SHIFT” in the ACTIVE TEST and operate the shift solenoid valves on the OBD II scan
tool or Hand-held tester.

NOTICE:
The values given below for ”Normal Condition” are representative values, so a vehicle may still be
normal even if its value differs from those listed here. Do not depend solely on the ”Normal Condi-
tion” here when deciding whether or not the part is faulty.

Item

Test Details

Diagnostic Note

SHIFT

[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (31 mph)
[Others]

Press 

→

 button: Shift up

Press 

←

 button: Shift down

Possible to check the operation of

the shift solenoid values.

A

NG (S4)

B

NG (SR)

NG(A)

Go to step 6

NG(B)

Go to step 7

OK

CHECK AND REPLACE ECM(See page 

01-31

)

D25466

1

2

1

2

(+)

(-)

05-416

-

DIAGNOSTICS

ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]

569

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

3

INSPECT SHIFT SOLENOID VALVE SL1

(a)

Remove the shift  solenoid valve SL1.

(b)

Measure the resistance between terminals.
OK:
Resistance: 5.0 - 5.6 

Ω

 at 20

°

C (68

°

F)

(c)

Connect the positive (+) lead with a 21 W bulb to terminal
2 and the negative (-) lead to terminal 1 of the solenoid
valve connector, then check the movement of the valve.
OK:
The solenoid makes an operating noise.

OK

Go to step 8

NG

REPLACE SHIFT SOLENOID VALVE SL1

D25466

1

2

1

2

(+)

(-)

-

DIAGNOSTICS

ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]

05-417

570

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

4

INSPECT SHIFT SOLENOID VALVE SL2

(a)

Remove the shift  solenoid valve SL2.

(b)

Measure teh resistance between terminals.
OK:
Resistance: 5.0 - 5.6 

Ω

 at 20

°

C (68

°

F)

(c)

Connect the positive (+) lead with a 21 W bulb to terminal
2 and the negative (-) lead to terminal 1 of the solenoid
valve connector, then check the movement of the valve.
OK:
The solenoid makes an operating noise.

OK

Go to step 8

NG

REPLACE SHIFT SOLENOID VALVE SL2

D25466

1

2

1

2

(+)

(-)

C90639

(+)

(-)

05-418

-

DIAGNOSTICS

ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]

571

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

5

INSPECT SHIFT SOLENOID VALVE SL3

(a)

Remove the shift  solenoid valve SL3.

(b)

Measure teh resistance between terminals.
OK:
Resistance: 5.0 - 5.6 

Ω

 at 20

°

C (68

°

F)

(c)

Connect the positive (+) lead with a 21 W bulb to terminal
2 and the negative (-) lead to terminal 1 of the solenoid
valve connector, then check the movement of the valve.
OK:
The solenoid makes an operating noise.

OK

Go to step 8

NG

REPLACE SHIFT SOLENOID VALVE SL3

6

INSPECT SHIFT SOLENOID VALVE S4

(a)

Remove the shift solenoid valve S4.

(b)

Measure the resistance between the solenoid connector
and the solenoid body.
OK:
Resistance: 11 - 15 

Ω

 at 20

°

C (68

°

F)

(c)

Connector positive (+) lead to the terminal of solenoid
connector, negative (-) lead to the solenoid body.
OK:
The solenoid makes an operating noise.

OK

Go to step 8

NG

REPLACE SHIFT SOLENOID VALVE S4