Lexus ES300 (1997 year). Service manual — part 209

Z19485

Horn

Horn Switch

Engine Room
Junction Block

Horn Relay

HORN Fuse

BE067–01

–

BODY ELECTRICAL

HORN SYSTEM

BE–171

1555

1997 LEXUS ES300 (RM511U)

HORN SYSTEM

LOCATION

BE068–03

N21863

N21864

N10342

BE–172

–

BODY ELECTRICAL

HORN SYSTEM

1556

1997 LEXUS ES300 (RM511U)

INSPECTION

1.

INSPECT HORN SWITCH

(a)

Disconnect the negative (–) terminal from the battery.

(b)

Remove the left and right covers from the steering wheel.

(c)

Using a torx socket wrench, loosen the 2 bolts.

(d)

Pull up the horn pad and place it on the steering column,
as shown.

HINT:
Do not disconnect the connector from the horn pad.
(e)

Disconnect the connector from the slip ring.

(f)

Check that no continuity exists between terminal 6 of the
connector and body ground.

(g)

Check that continuity exists between terminal 6 of the
connector and body ground when the horn contact plate
is pressed against the steering spoke assembly.

If continuity is not as specified, repair or replace the steering
wheel or wire harness as necessary.
(h)

Install the horn pad in place and using a torx socket
wrench, torque the 2 bolts.
Torque:

7.1 N·m (72 kgf·cm, 62 in.·lbf)

(i)

Install the left and right covers.

(j)

Connect the negative (–) terminal to the battery.

2.

INSPECT HORN OPERATION

Connect the positive (+) lead from the battery to the terminal
and negative (–) lead to the horn body and check that the horn
blows.
If operation is not as specified, replace the horn.

N14863

1

2

5

3

3

1

5

2

–

BODY ELECTRICAL

HORN SYSTEM

BE–173

1557

1997 LEXUS ES300 (RM511U)

3.

INSPECT HORN RELAY CONTINUITY

Condition

Tester connection

Specified condition

Constant

1 – 2

Continuity

Apply B+ between

terminals 1 and 2.

3 – 5

Continuity

If continuity is not as specified, replace the relay.

BO094–02

V00005

Shape (Example)

Removal/Installation

Clip Remover

Pliers

Screwdriver

Scraper

–

BODY

CLIP

BO–1

1179

1997 LEXUS ES300 (RM511U)

CLIP

REPLACEMENT

The removal and installation methods of typical clips used in body parts are shown in the table below.
HINT:
If the clip is damaged during the operation, always replace it with a new clip.