Lexus LS400 (2000 year). Manual — part 46
BE0D8–01
I03461
Transponder Key
Coil
Transponder Key
Amplifier
ECM
–
BE–253
2116
LOCATION
BE0D9–01
N17185
BE–254
–
2117
INSPECTION
INSPECTION TRANSPONDER KEY COIL CONTINUITY
Check that there is continuity between terminal 1 and 2.
If continuity is not as specified, replace the coil.
BE0DA–01
I03238
Engine Room Junction Block
Horn Relay
HORN Fuse
Horn
Horn Switch
–
BE–255
2118
HORN SYSTEM
LOCATION
BE0DB–01
N13360
I03247
6
I03248
Z08505
2
3
1
BE–256
–
2119
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 there is no continuity between terminal 6 of the
connector and body ground.
(g)
Check that there is continuity 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 HORN RELAY CONTINUITY
Condition
Tester connection
Specified condition
Constant
1 – 2
Continuity
Apply B+ between
terminals 1 and 2.
2 – 3
Continuity
If continuity is not as specified, replace the relay.
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