Lexus RX300 (MCU15). Service manual - part 129

I19122

Engine & ECT ECU

C18

A11

Light Failure Sensor

Main Fuel Sender Gauge

Sub–Fuel Sender Gauge

A18

C20

A15

SPEED

TACHO

TEMP

FUEL

+IG

+IG

+B

+B

+IG

BRAKE

P

R

N

D

2

L

FUEL

OIL LEVEL

CHARGE

BEAM

SRS

ECU

Power

Source

Circuit

A12

B7

B6

B10

B14

Illumination 
Light

Light
Control
Rheostat

A10

A1

Speed Control Unit

A3

A14

HEATER Fuse
ECU+B Fuse
DOME Fuse

+IG

Rr Light

SEAT
BELT

Low Oil
Pressure

A/T Oil

Temp

DOOR

TURN LH

C14

C13

A9

Turn
Signal Flasher

H–LP Fuse

Headlight Dimmer Switch

Airbag Sensor
Assembly

Skid Control
ECU

Washer Level
Warning Switch

Cruise Control
ECU

A20

A19

A6

C19

C15

C16

C21

B2

C17

Washer

Cruise Control

+IG

ECU

Check Engine

TRC OFF

ABS

+IG

A17

A21

MPX–

MPX+

Engine & ECT
 ECU

O/D OFF

TURN RH

Fr Fog

Rr Fog

Skid Control ECU

TRC(SLIP)

LHD:

Oil Level Sensor

C12

+IG

ECT SNOW

TAIL

+B

+B

A22

VSC

BRAKE

B5

C22

–

BODY ELECTRICAL

COMBINATION METER

BE–63

LEXUS RX300   (RM785E)

I21273

A14

A1

A22

A11

A12

A6

C21
C19

C17

C16

A19

B2

A20

A9

C15

C14

C13

A/C and combination meter integrated ECU

E1 E2 E3 E4 E11E12E13

F14 F1 F2 F3 F8 F10 F13 F4 F5 F6 F7 F12

E14

E6

E7 E8 E9

E10

E1 E2 E3 E4 E11E12E13

F14 F1 F2 F3 F8 F10F13 F4 F5 F6 F7 F12

E14

E6

E7 E8 E9

E10

ECU

ECU

SRS

TURN RH

TURN LH

SLIP

HI–Beam

WASHER

TRAC OFF

CRUISE

Mulfunction

ABS

O/D OFF

Combination meter circuit plate

C22

B5

F11

F11

E5

E5

VSC
BRAKE

BE–64

–

BODY ELECTRICAL

COMBINATION METER

LEXUS RX300   (RM785E)

DOME +B Terminal

CS Terminal

IG + Terminal

No.

1

2

3

4

6

7

8

9

10

11

12

6

7

1

2

3

4

5

Airbag Warning Light

8

10

12

E

F

Wire Harness Side (Terminal name)

No.

HEATER Fuse

Speed Control Unit

Engine & ECT ECU
H–LP Fuse

ECU+B Fuse

Interior LIght

DOME Fuse

Main Fuel Sender Gauge

Turn Signal Switch (LH)

1

3

6

9

10

 7
10

Washer Level Warning Switch

Light Control Rheostat (RHCL)

 6

 2

22

A

C

16

17

15

13

14

20

21

19

18

Right Turn Indicator Light

Window Washer Level Warning Light

O/D OFF Indicator Light

13

14

13

14

Wire Harness Side (Terminal name)

11

Ground

12

19

20

18

15

17

14

Multiplex Communication Circuit (MPX–)

Light Failure Sensor

Airbag Sensor Assembly

Headlight Dimmer Switch

21

Multiplex Communication Circuit (MPX+)

Ground

14

B

Light Control Rheostat (ILL+)

Light Control Rheostat (ET)
Light Control Rheostat (TC)

Turn Signal Switch (RH)

Cruise Control ECU

DOME +B Terminal

IG + Terminal

Light Control Rheostat (RHOO)

CLK Terminal
DOUT Terminal

DIN Terminal

Ground (P/GND)

Ground (P/GND)
Ground (P/GND)

Ground (S/GND)

Left Turn Indicator Light

SLIP Indicator Light

TRC OFF Indicator Light

CRUISE MAIN Indicator Light

Mulfunction Indicator Light

ABS Warning Light

HI–Beam Indicator Light (BEAM +)

HI–Beam Indicator Light (BEAM –)

22

Engine & ECT ECU

Engine & ECT ECU

Skid Control ECU

5

12

Oil Level Sensor

Skid Control ECU
Skid Control ECU

Skid Control ECU

Skid Control ECU
Skid Control ECU

5

BRAKE Warning Light

11

VSC Indicator Light

–

BODY ELECTRICAL

COMBINATION METER

BE–65

LEXUS RX300   (RM785E)

BE0C1–06

I19124

Combination Meter Cover

A/C and Combination Meter
Integrated ECU

Combination Meter Wire

Combination Meter Circuit Plate

Bulb

Combination Meter Case

Combination Meter Plate

Speedometer Assembly

Combination Meter Hood

Combination Meter Glass

BE–66

–

BODY ELECTRICAL

COMBINATION METER

LEXUS RX300   (RM785E)

COMPONENTS