1
2
3
4
22 LX 570
5A
ECU–IG
No. 4
3B8
(
IG
)
G
IG
1
W
R
B
W
R
B
GND2 RDA RF5V GND
4910 7
GND RDA +5V
L10
K8
2
1
B
CLSW
8

E23
W–B
W–B
Tire Pressure Warning Reset Switch
Tire Pressure Warning ECU
Tire Pressure Warning
Antenna and Receiver
514
Tire Pressure W arning System
KL15KL17KL16
Horn
2D21
2B1
GR
11
B
R–W
B
10A
HORN
(
BAT
)
1A71A8
HORN Relay
Main Body ECU
<3–7><4–14>
B
High Pitched
Horn Assembly

A4
Low Pitched
Horn Assembly
A5
Multiplex Communication
System
(
CAN
)
<2–15>
612
CANP CANN
KL14
SGND
3
(
Shielded
)(
Shielded
)
E
INT
L2
EL11
B
E3
IG+
+B
IG
E59

Junction
Connector
R
R
R–L
2686
14 2D2B13
(
BAT
)
2
1
5A
ECU–B1
BB–R
33 EA2
(
IG
)
2
1
5A
MET
67
A37
(
A
)
, C52
(

B
)
Junction
Connector
E60
Junction
Connector
6
24
BR
14 B
19 A
BRBR
C1
BR
EA3
IG+B
ET
Tire Pressure
Power
Supply
Circuit
Multi
Display
E77
SET
CAN
CANH CANL
Multiplex Communication
System

(
CAN
)
<2–15>
2
Combination Meter
Assembly
3021
26 36 35
Horn Switch
z51
(
C
)
Steering Pad Switch Assembly
L
B1
C5
Spiral Cable
Sub–Assembly
O
A8
HO
E12
(
A
)
, z35
(
B

)
Switch Wire
z35
(
B
)
, z51
(
C
)
Buzzer
Master
M OVERALL ELECTRICAL WIRING DIAGRAM
LEXUS LX 570 (EM08F0U)