Lexus ES300 (1997 year). Manual — part 261

BE0123

At Center

BE0124

Several
Volts

0 Volt

Broken
Wire

V

BE0150

Masking Tape

Repair Point

Broken
Wire

BE0151

BE–108

–

BODY ELECTRICAL

DEFOGGER SYSTEM

1492

1997 LEXUS ES300 (RM511U)

(c)

Inspect the voltage at the center of each heat wire.

Voltage

Criteria

Approx. 5V

Okay (No break in wire)

Approx. 10V or 0V

Broken wire

HINT:
If there is approximately 10 V, the wire is broken between the
center of the wire and the positive (+) end. If there is no voltage,
the wire is broken between the center of the wire and ground.

(d)

Place the voltmeter positive (+) lead against the defogger
positive (+) terminal.

(e)

Place the voltmeter negative (–) lead with the foil strip
against the heat wire at the positive (+) terminal end and
slide it toward the negative (–) terminal end.

(f)

The point where the voltmeter deflects from zero to sever-
al V is the place where the heat wire is broken.

HINT:
If the heat wire is not broken, the voltmeter indicates 0 V at the
positive (+) end of the heat wire but gradually voltage increases
to approx. 12 V as the meter probe moves to the other end.

8.

IF NECESSARY, REPAIR DEFOGGER WIRE

(a)

Clean the broken wire tips with grease, wax and silicone
remover.

(b)

Place the masking tape along both sides of the wire for
repair.

(c)

Thoroughly mix the repair agent (Dupont paste No.
4817).

(d)

Using a fine tip brush, apply a small amount of the agent
to the wire.

(e)

After a few minutes, remove the masking tape.

(f)

Do not repair the defogger wire for at least 24 hours.

Z19362

Instrument Panel Junction Block

GAUGE Fuse

DOOR Fuse

POWER Fuse

Power Main Relay

Integration Relay

Ignition Switch

Power Window
Master Switch

Power Window Switch

Power Window Switch

Power Window Motor

Power Window Motor

BE05M–01

–

BODY ELECTRICAL

POWER WINDOW CONTROL SYSTEM

BE–109

1493

1997 LEXUS ES300 (RM511U)

POWER WINDOW CONTROL SYSTEM

LOCATION

BE05N–02

N21194

1

2

3

4

5

6

7

8

9

10

11

12

13

14

BE–110

–

BODY ELECTRICAL

POWER WINDOW CONTROL SYSTEM

1494

1997 LEXUS ES300 (RM511U)

INSPECTION

1.

INSPECT POWER WINDOW MASTER SWITCH CON-
TINUITY

(a)

Inspect the front driver’s switch.

Window unlock:

Switch position

Tester connection

Specified condition

UP

1 – 13 6 – 7

Continuity

OFF

1 – 6 – 13

Continuity

DOWN

1 – 6 7 – 13

Continuity

Window lock:

Switch position

Tester connection

Specified condition

UP

1 – 13 6 – 7

Continuity

OFF

1 – 6 – 13

Continuity

DOWN

1 – 6 7 – 13

Continuity

If continuity is not as specified, replace the master switch.
(b)

Inspect the front passenger’s switch.

Window unlock:

Switch position

Tester connection

Specified condition

UP

1 – 5 7 – 12

Continuity

OFF

1 – 5 – 12

Continuity

DOWN

1 – 12 5 – 7

Continuity

Window lock:

Switch position

Tester connection

Specified condition

UP

7 – 12

Continuity

OFF

5 – 12

Continuity

DOWN

5 – 7

Continuity

If continuity is not as specified, replace the master switch.
(c)

Inspect the rear left switch.

Window unlock:

Switch position

Tester connection

Specified condition

UP

1 – 9 7 – 10

Continuity

OFF

1 – 9 – 10

Continuity

DOWN

1 – 10 7 – 9

Continuity

Window lock:

Switch position

Tester connection

Specified condition

UP

7 – 10

Continuity

OFF

9 – 10

Continuity

DOWN

7 – 9

Continuity

If continuity is not as specified, replace the master switch.
(d)

Inspect the rear right switch.

Window unlock:

Switch position

Tester connection

Specified condition

UP

1 – 14 7 – 11

Continuity

OFF

1 – 11 – 14

Continuity

DOWN

1 – 11 7 – 14

Continuity

N21195

1

7

N21196

1

7

N21197

6

13

N21198

13

6

–

BODY ELECTRICAL

POWER WINDOW CONTROL SYSTEM

BE–111

1495

1997 LEXUS ES300 (RM511U)

Window lock:

Switch position

Tester connection

Specified condition

UP

7 – 11

Continuity

OFF

11 – 14

Continuity

DOWN

7 – 14

Continuity

If continuity is not as specified, replace the master switch.

2.

INSPECT POWER WINDOW MASTER SWITCH ILLU-
MINATION

(a)

Set the window lock switch to the unlock position.

(b)

Connect the positive (+) lead from the battery to terminal
7 and the negative (–) lead to terminal 1, and check that
all the illuminations light up.

(c)

Set the window lock switch to the lock position, check that
all the passenger’s power window switch illuminations go
out.

If operation is not as specified, replace the master switch.

3.

INSPECT ONE TOUCH POWER WINDOW SYSTEM/
CURRENT OF CIRCUIT (Using an ammeter)

(a)

Disconnect the connector from the master switch.

(b)

Connect the positive (+) lead from the ammeter to termi-
nal 6 on the wire harness side connector and the negative
(–) lead to negative (–) terminal of the battery.

(c)

Connect the positive (+) lead from the battery to terminal
13 on the wire harness side connector.

(d)

As the window goes down, check that the current flow is
approximately 7 A.

(e)

Check that the current increases up to approximately
14.5 A or more when the window stops going down.

HINT:
The circuit breaker opens some 4 – 40 seconds after the win-
dow stops going down, so that check must be made before the
circuit breaker operates.
If the operation is as specified, replace the master switch.