Toyota Land Cruiser

 Service Manual

Body Electrical
Horn system

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.

3. INSPECT ENGINE ROOM R/B RELAY CIRCUIT (See Pase BE-15 )

HINT: The horn relay is built in engine room junction block. Also the relay is constructed with a relay block that is in the junction block as a unit. To disconnect the wire harness connecting with relay block is impossible. If the relay has a malfunction, replace it with junction block assembly wire harness together.

LOCATION

Antenna

Audio system

Body electrical system

Combination meter

Combination meter

Compass

Defogger system

Engine immobiliser system

Fog light system

Garage door opener system

Headlight and taillight system

Horn system

Interior light system

Ignition switch and key unlock warning switch

Multi display

Overhead junction block

Power door lock control system

Power window control system

Stop light system

Sliding roof system

Troubleshooting

Turn signal and hazard warning system

Wiper and washer system

Wireless door lock control system