Lexus LS400 (2000 year). Manual - part 28

BE0B7–01

I03499

*1: USA

*2: CANADA

D FR DOOR

P FR DOOR

SEAT FR

PWR

D RR DOOR

P RR DOOR

FR FOG

STOP

FUEL OPN

H/CTRL

ABS

HTR

DEF

Deffoger Relay

MIR HTR

ALT

AM1

AM2

Headlight Control Relay

MAIN

*1

*2

ST

EFI No.1

HAZ

HORN

TEL

ALT–S

ETCS

CRT

RADIO No.1

Battery

11

14

9

8

33

34

17

19

21

10

1

3

4

5

2

6

50

7

41

42

45

44

49

46

12

53

32

2

7

3

4

6

8

Ignition Switch

ACC

IG1

IG2

Headlight Control Relay

ST2

DRL

EFI Main Relay

Short Pin

AM1

AM2

H–LP R LWR

H–LP L LWR

54

37

38

Taillight Control Relay

Ignition Switch

Stop Light Switch

Engine Main Relay

1

2

EFI No.2

DOME

OBD

ECU–B

MPX–B

43

47

22

48

13

H–LP R UPR

H–LP L UPR

H–LP R LWR

H–LP L LWR

H–LP R UPR

H–LP L UPR

ECU–IG

IGN

STARTER

Daytime

Running Light No.2 Relay

TURN

PWR–IG

37

38

39

40

39

40

RADIO No.2

HEATER

WIPER

GAUGE

FR CIG

RR CIG

29

30

31

27

25

23

24

28

26

36

35

TAIL

PANEL

AIR SUS

STOP–S

FR S/HTR

RDI FAN

15

16

18

20

51

52

Headlight Control Relay

–

BODY ELECTRICAL

POWER SOURCE

BE–19

1882

CIRCUIT

1.

WIRING DIAGRAM

BE–20

–

BODY ELECTRICAL

POWER SOURCE

1883

The power source supplies power to each of the vehicle’s elec-
trical devices. It is composed of the battery, fuses and relays,
which are located centrally at engine room junction block, en-
gine room No.1 relay block, fusible link block and engine room
No.2 relay block in the engine compartment, and instrument
panel junction block in the cabin near the driver’s feet.
2.

RELATED SYSTEMS FOR EACH FUSIBLE LINK, ME-
DIUM CURRENT FUSE AND FUSE

Parts Name

Related Systems or Parts

Related Systems or Parts

1. ABS H–Fuse

  ABS System

  TRAC System

2. ALT H–Fuse

  A/C System

  Air Suspension System

  Defogger System

  Electrically Controlled Transmission System

  Fog Light System

  Fuel Lid Opener System

  Illumination Light System

  Light Fuiler Relay

  Power Shoulder Belt Anchorage System

  Radiator Fan System

  Rear Combination Light System

  Seat Heater System

  Stop Light System

  Tailight System

  Tilt & Telescopic Steering System

  VSC

3. HTR H–Fuse

  A/C System

4. DEF H–Fuse

  Defogger System

5. AM1 H–Fuse

  A/C System

  Air Suspension System

  Audio System

  Auto Antenna System

  Back–up Light System

  Body ECU System

  Cellular Phone

  Cigarette Lighter System

  Combination Meter

  Deffoger System

  Electro Chromic Mirror System

  Electric Tension Reducer System

  Electrically Controlled Transmission System

  EMV

  Generator System

  Headlight Cleaner System

  Heater System

  Illuminated Entry System

  Light Failure Sensor

  Shift Lock System

  Power Seat System

  Progressive Power Steering System

  Rheostat Light Control

  SRS

  Tilt & Telescopic Steering System

  Turn Signal Light System

  VSC System

  Wiper System

6. AM2 H–Fuse

  Electrically Controlled Transmission System

  Engine

  Starter

7. MAIN H–Fuse

  A/C System

  Air Suspension System

  Auto Antenna System

  Cellular Phone

  Check Connector

  Combination Meter System

  Daytime Running Light System

  Deffoger System

  Electrically Controlled Transmission System

  Engine

  Generator System

  Hazard Warning System

  Heater System

  Headlight System

  Horn

   OBD II

  Power Seat Control System

  Power Shoulder Belt Anchorage System

  SRS

  Starter

  Tilt & Telescopic Steering System

8. PWR H–Fuse

  Power Shoulder Belt Anchorage System

  Sliding Roof System

  Tilt & Telescopic Steering System

9. SEAT FR

H–Fuse

  Power Seat System

10. H/CTRL

H–Fuse

  Air Suspension System

–

BODY ELECTRICAL

POWER SOURCE

BE–21

1884

11. D FR DDOR

Fuse

  Driver Door Control System

12. ETCS Fuse

  Engine

13. MPX–B Fuse

  Combination Meter

  MPX

14. P FR DOOR

Fuse

  Front Passenger Door Control System

15. TAIL Fuse

  Parking Light

  Rear Combination Light

  Side Marker Light

  Taillight

16. PANEL Fuse

  Illumination Light System

17. FR FOG LP

Fuse

  Fog Light System

18. AIR SUS Fuse

  Air Suspension System

19. STOP Fuse

  Stop Light System

20. STOP–S Fuse

  Electrically Controlled Transmission System

  Shift Lock System

  Stop Light System

21. FUEL OPN

Fuse

  Power Shoulder Belt Anchorage System

  Fuel Lid Opener System

22. OBD Fuse

  OBD II

23. GAUGE Fuse

  Back–up Light System

  Combination Meter

  Daytime Running Light System

  Electrically Controlled Transmission System

  Engine

  Illuminated Entry System

  Light Failure Sensor

  Power Shoulder Belt Anchorage System

  Rheostat Light Control

  Shift Lock System

  Tilt & Telescopic System

24. TURN Fuse

  Turn Signal Light System

25. WIPER Fuse

  Headlight Cleaner System

  Wiper and Washer System

26. ECU–IG Fuse

  Air Suspension System

  Cellular Phon

  Electro Chromic Inner Mirror System

  Generator

  Power Seat System

  Progressive Power Steering

  Shift Lock System

  VSC

27. HEATER Fuse

  A/C System

  Defogger System

  Heater System

28. PWR–IG Fuse

  Auto Antenna System

  Electric Tension Reducer System

  Headlight Level Control System

  MPX

29. FR CIG Fuse

  A/C System

  Front Cigarette Lighter

  SRS

30. RR CIG Fuse

  Rear Cigarette Lighter

  Shift Lock System

31. RADIO No.2

Fuse

  Audio System

  Auto Antenna System

  Body Control System

  EMV

32. RADIO No.1

Fuse

  Audio System

  EMV System

33. D RR DOOR

Fuse

  Rear Door Control System

34. P RR DOOR-

Fuse

  Rear Door Control System

35. STARTER

Fuse

  Starter

36. IGN Fuse

  Electrically Controlled Transmission System

  Engine

  SRS

BE–22

–

BODY ELECTRICAL

POWER SOURCE

1885

37. H–LP R LWR

Fuse

  Headlight (RH)

38. H–LP L LWR 

LH Fuse

  Headlight (LH)

39. H–LP R UPR

RH Fuse

(CANADA)

  Headlight HI–Beam (RH)

40. H–LP L UPR

LH Fuse

(CANADA)

  Headlight HI–Beam (LH)

41. ST H–Fuse

  Starter

42. EFI No.1 Fuse

  Check Connecter

  Electrically Controlled Transmission System

  Engine

43. EFI No.2 Fuse

  Engine

44. HORN Fuse

  Horn

45. HAZ Fuse

  Hazard Warning System

46. ALT–S Fuse

  Generator

47. DOME

Fuse

  MPX

  Power Seat Control System

48. ECU–B Fuse

  Air Suspension System

  Daytime running Light System

  SRS

  VSC

49. TEL Fuse

  Cellular Phone

50. MIR HTR

Fuse

  Mirror Defogger System

51. FR S/HTR

HTR Fuse

  Seat Heater System

52. RDI FAN

M–Fuse

  Radiator Fan

53. CRT Fuse

  EMV

54. DRL Fuse

  Daytime Running Light System