Toyota Land Cruiser 100 and Toyota Land Cruiser 105 were produced in 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007. During this time, the model was restyled. In this publication, we will show the location of electronic control units, a description of fuses and relays Toyota Land Cruiser 100 (105) with block diagrams and their locations. We will highlight the cigarette lighter fuse.

The arrangement of the blocks and the purpose of the elements in them may differ from the one shown and depends on the year of manufacture and the region of delivery. Check the purpose with your diagrams on the block cover.

Blocks in the cabin

Location

General layout of the units in the cabin

Left hand drive (1998 – 2002)

  1. ’98-’02: Turn signal relay
  2. ’98-’02: Fuse Box
    ’02-’07: Fuse Box / Body Electronics Box
  3. ’98-’02: ABS Control Unit
  4. Steering column adjustment control unit
  5. Key transponder computer
  6. ’98-’02: Door Lock Control Unit
  7. ’98-’02: Electronic Toll Collection Block
  8. ’98-’02: Suspension Control Unit
  9. Key transponder amplifier
  10. ’98-’02: Instrument Panel Control Unit
  11. Anti-theft system control unit
  12. Automatic Antenna Relay
  13. Engine and gearbox control unit
  14. Interaxle differential lock relay
  15. ’98-’02: Front and rear differential lock control unit
    or
    Rear differential lock control unit
  16. ’98-’02: Cruise Control Unit
  17. ’98-’02: Distribution Block (MTR Relay)
    ’02-’07: Fuse Block
  18. ’98-’02: Auxiliary heater control unit
  19. ’98-’02: Central control unit
  20. ’98-’02: Deceleration Sensor
  21. Central airbag unit
  22. ’98-’02: Active Height Control (AHC) Relay
  23. ’98-’02: Right hand drive : Heating timer
  24. ’02-’07: Air conditioning control unit (if equipped with navigation)
  25. ’02-’07: Distribution Block
  26. ’02-’07: Distribution Block
  27. ’02-’07: Distribution Block
  28. ’02-’07: Distribution Block
  29. ’02-’07: Network Gateway Block
  30. ’02-’07: Gear selector lock control unit
  31. ’02-’07: Air conditioning control unit (without navigation)
  32. ’02-’07: ABS & BA & TRAC & VSC control unit

Fuse box on the left side

On the general diagram it is marked as number 2.

110A MIRR – Power Mirrors
215A SRS – Airbags, seat belts with pretensioners
315A CIGAR – Cigarette lighter , audio system, antenna
410A IGN – Multiport fuel injection system/sequential multiport fuel injection system, ABS, air bags, seat belts with pretensioners, low battery warning light
540A POWER – Central locking, power windows, sunroof, electric seats, tilt and height steering column adjustment
610A DOME – Interior lighting, personal lighting
720A AHC-IG – Active Height Control (AHC)
820A DIFF – Differential Lock Control Unit
915A GAUGE – Instrument cluster, service and warning indicators, warning buzzer, reversing lights, air conditioning, transmission control unit, daytime running lights, wireless control system
1020/25A WIPER – Windscreen wiper and washer, rear window wiper and washer
117.5A I/UP – Engine Idle Speed ​​System
1215A FR FOG – Front fog light
1315A STOP – Brake light bulbs, additional brake light
1430A RR AC – Rear Air Conditioner
1520A DEFOG – Rear Window Defogger
1615A ECU-B – Tilt and height steering column adjustment system, daytime running lights, anti-theft alarm system
1715A TAIL – Side light, number plate light, instrument panel light
1815A AHC-B – Active Height Control (AHC)
1910A OBD – Diagnostic connector
2010A RR HTR – Rear heater
2115A ECU-IG – ABS, gear selector lock, power seats, antenna, tilt and height steering column adjustment
2215A PWR OUTLET

Fuses number 3 and 22, rated at 15A, are responsible for the operation of the cigarette lighter and socket.

Some relays are attached to the back of the block.

R1Fuel pump (C/OPN)
R2Fuel pump (FUEL/PMP)
R3(D/L (L))
R4(SPIL/VLV)
R5Starter (ST/CUT)
R6(D/L (U))
R7Front fog light (FR FOG)
R8–
R9Rear window heating (DEFOG)
R10Power windows, sunroof (POWER)
R11Rear Heater (RR HTR)
R12Interior lighting (DOME)
R13Side light (TAIL)

Scheme. Option 2.

2003 – 2007

115A PWR OUTLET
215A CIG – Cigarette Lighter
37.5A ACC – Instrument cluster lighting
47.5A AM1 – Multiport fuel injection system/sequential multiport fuel injection system
520A DEFOG – Rear Window Defogger
615A AHC−B – Active Height Control (AHC)
720A FUEL HTR – Fuel Heating
87.5A POWER HTR – Auxiliary Heater
920A AHC−IG – Active Height Control (AHC)
1010A EFI NO.2 – Emission Control System
10A ECD NO.2 – Emission Control System
1110A GAUGE1 – Instrument Cluster
1210A ECU−IG1 – Multiport fuel injection system/sequential multiport fuel injection system
1310A ECU−B1 – Navigation system
1415A DBL LOCK – Double locking system
1530A BATT CHARGE – Trailer Charging System
1615A A/C – Air Conditioner
1715A STOP – Brake light bulbs
187.5A OBD−2 – Diagnostic connector
197.5A IDEL UP – Engine Idle Speed ​​System
2030A LH SEAT – Left seat electric drive
2125A DOOR – Central locking, power windows
2225A SUN ROOF – Hatch
2315A RR WIPER – Rear Windscreen Wiper

Fuses number 1 and 2, rated at 15A, are responsible for the operation of the cigarette lighter and socket.

Relay diagram from the back of the unit

  • R1 – Rear window heating (DEFOG)
  • R2 – Ignition (IG1 NO.2)
  • R3 – Ignition (ACC)
  • R4 – Interior lighting (DOME)

Fuse box on the right side

On the diagram it is marked as number 17. It is located under the instrument panel.

Scheme

2002 – 2007

110A ECU−B2 – Central locking, window lifts
220A DIFF – All-wheel drive system
315A WASHER – Glass washer
410A RADIO – Audio system
510A DOME – Interior Lighting
640A VGRS – Variable Gear Ratio Steering
720A P/W (FL) – Front Left Window Regulator
820A P/W (RL) – Rear Left Power Window
925A WIPER – Windscreen wiper
1010A ECU−IG2 – Rear Air Conditioner
1115A SEAT HTR – Heated Seats
1210A GAUGE2 – Reverse Lights
137.5A MET – Instrument cluster
147.5A ING – Multi-point fuel injection system/sequential multi-point fuel injection system
157.5A SECURITY – Anti-theft system
1620A P/W (RR) – Rear Right Window Regulator
1720A P/W (FR) – Front Right Window Regulator
1830A BATT CHARGE – Trailer Charging System
19–
2020A TIL&TEL – Tilt and height adjustment system for the steering column
2130A RR A/C – Rear Air Conditioner
2230A RH SEAT – Right seat electric drive

Relay diagram from the back of the unit

  • R1 – Stop light lamps (STOP LP)
  • R2 –
  • R3 – Ignition (IG1 NO.3)
  • R4 – Ignition cut-off (ACC CUT)

Additional elements

Scheme

  1. Hatch control unit
  2. RHD: Power Mirror Control Unit
  3. Audio system amplifier
  4. Air conditioner booster
  5. Rear Fan Relay
  6. Option 1: Rear wiper relay
  7. Hitch relay
  8. Trailer relay
  9. Fuel pump control unit
  10. Fuel pump select relay
  11. Additional fuel pump forced activation relay
  12. ’02-’07: Rear View Monitor Control Unit
  13. ’02-’07: Navigation control unit
  14. Rear Heater Relay
  15. Control valve
  16. LHD: Power Mirror Control Unit
  17. Option 2: Rear Right Windscreen Wiper Relay
  18. Option 2: Rear Left Windscreen Wiper Relay

Blocks under the hood

Location

General layout of the blocks under the hood

  1. Injector Control Unit (EDU)
  2. Main winch relay
  3. Glow Plug Relay
  4. Fuse and relay box
  5. Power fuse box
  6. Left headlight control unit
  7. Auxiliary heater relay
  8. Coolant Temperature Switch Relay
  9. Air conditioner fan relay
  10. Headlight Washer Relay
  11. Right headlight control unit
  12. Power fuse box (cold zone)
  13. Daytime running lights relay #3
  14. Intake Heater Relay

Fuse and relay box

Located on the left side, next to the battery.

Option 1

Fuses
120A AM1 NO.2 – Starting system, direction indicators, hazard warning lights, fuses: ”CIGAR”, ”ECU−IG”, ”MIRR”, ”SRS”
220A AC – Air Conditioner
310A POWER HTR – Auxiliary Heater
415A SEAT HTR – Heated Seats
520A FUEL HTR – Fuel Heating
615A MIR HTR – Heated Mirrors
720A HEAD CLNER – Headlight Cleaners
820A CDS FAN – Cooling system fan
920A EFI – Multiport fuel injection system/sequential multiport fuel injection system, emission control system, fuel pump
20A ECD – Multiport fuel injection system/sequential multiport fuel injection system
1010A HORN – Horn
1115A THROTTLE – Electronic throttle control system
1220A RADIO – Audio system
1315A HAZ-TRN – Hazard warning lights, direction indicators
1430A AM2 – Starting system, multipoint fuel injection system/sequential multipoint fuel injection system, fuse ”IGN”
1520A ECU-B1 – Central locking, power windows, rear wiper and washer, wireless control system, electric mirrors, instrument cluster, air conditioning, automatic lighting system, anti-theft system
1620A HEAD (LH-UPR) – Left High Beam
1720A HEAD (RH-UPR) – Right High Beam
1810A HEAD (LH-LWR) – Low beam left, front fog light
1910A HEAD (RH-LWR) – Low beam right
2040A 1998-1999: ABS
50A 2000-2003: ABS
2150A AHC – Active Height Control (AHC)
2250A ACC – Fuse “PRW OUTLET”
2380A AM1 NO.1 – Charging system, fuses: ”AM1 NO.2”, ”GAUGE”, ”WIPER”
2460A HTR – Air conditioning
2580A GLOW – Engine pre-heating system
2640A ABS
2730A STARTER – Starting system
Relay
R1Air Conditioning Compressor Clutch (MG CLT)
R2Heated mirrors (MIR HTR)
R3Auxiliary relay (ACC)
R4Active Height Control (AHC)
R5Ignition (IG1 NO.1)
R6Ignition (IG1 NO.2)
R7ABS (ABS SOL)
R8Engine Control Unit (EFI)
Engine Control Unit (ECD)
R9Sound signal
R10Dimmer (light switch)
R11Starter
R12ABS (ABS MTR2)
R13Headlights (HEAD)
R14ABS (ABS MTR1)

Option 2

1–
2–
3–
4–
57.5A ST1 – 2002-2005: Multiport fuel injection system/sequential multiport fuel injection system
7.5A WIP−S – 2006-2007: –
630A TOWING – Trailer Lighting
715A MIR HTR – Heated Mirrors
810A RR HTR – Rear heater
915A HAZ−TRN – Hazard warning lights, direction indicators
107.5A ALT−S – Charging system
1120A NV-IR
1215A FR FOG – Fog light
1330A TOWING BRK – Trailer Lighting (Brake Lights)
1420A HEAD CLNER – Headlight Cleaners
1510A FR−IG – Charging system
167.5A PANEL – Instrument panel lighting
1730A TOWING TAIL – Trailer lighting (side light)
1815A TAIL – Side light
1930A BAT – Fuse: “ECU−B2”
207.5A TEL – Telephone
2130A AMP – Audio system
2225A EFI NO.1 – Multiport fuel injection system/sequential multiport fuel injection system
25A ECD NO.1 – Multiport fuel injection system/sequential multiport fuel injection system
2315A AM2 – Fuse: “IGN”
2410A ETCS – Multiport fuel injection system/sequential multiport fuel injection system
2510A HORN – Horn
26–
2710A HEAD (RH−LWR) – Low beam right
2810A HEAD (LH−LWR) – Low beam left
2920A HEAD (RH−UPR) – Right High Beam
3020A HEAD (LH−UPR) – Left High Beam
3140A ABS
3250A ABS
3350A AHC – Active Height Control (AHC)
3430A STARTER – Starting system
35SHORT PIN A – Fuses: “BAT”, “AMP”
36SHORT PIN B – Fuses: “HAZ-TRN”, “ALT-S”
3780A GLOW – Engine pre-heating system
Relay
R1Heater (HTR)
R2ABS (ABS MTR1)
R3ABS (ABS MTR2)
R4ABS (ABS SOL)
R5Engine Control Unit (EFI)
Engine Control Unit (ECD)
R6Active Height Control (AHC)
R7Fuel pump (C/OPN)
R8Fuel pump (F/PUMP)
R9Starter (ST)

Relay

Scheme

R1Coolant Temperature Switch Relay
R2Air Conditioning Compressor Clutch (MG CLT)
R3Cooling system fan (CDS FAN)
R4Sound signal
R5Headlights (HEAD)
R6High beam (HEAD HI)
R7Heated mirrors (MIR HTR)
R8Rear Heater (RR HTR)
R9Instrument panel lighting (PANEL)
R10Front fog light (FR FOG)
R11Ignition (IG NO.1)
R12Side light (TAIL)

Block on the battery

A fuse block made in the form of fusible links is attached to the positive terminal of the battery.

1100A J/B NO.2 – Fuses: “ECU-B”, “FR FOG”, “DEFOG”, “AHC-B”, “TAIL”, “STOP”, “DOME”, “POWER”, “OBD”, “RR AC” and “RR HTR”
2140A ALT – Fuses: ”J/B NO.2”, ”MIR HTR”, ”AM1 NO.1”, ”ACC”, ”CDS FAN”, ”HTR” and ”ABS NO.1”
3100A MAIN – Fuses: “ECU-B”, “FR FOG”, “DEFOG’, “AHC-B”, “OBD”, “TAIL”, “STOP”, “DOME\ TOWER”, “RR AC”, “RR HTR”
47.5A ALT-S – Charging System

Option 2

2003 – 2007

150A HTR – Air Conditioner/Heater
2120A J/B NO.1 – Relay “IG1 NO.1”, Relay “TAIL”, Fuses: “MIR HTR”, “RR HTR”, “TOWING BRK”, “TOWING”, “FR FOG”
3120A J/B NO.2 – Relay “IG1 NO.2”, Relay “ACC”, Fuses: “DEFOG”, “AM1”, “LH SEAT”, “STOP”, “ECU-B1”, “SUN ROOF”, “OBD-2”, “DOOR”
4120A J/B NO.3 – Relay “IG1 NO.3”, fuses: “SECURITY”, “TIL & TEL”, “RH SEAT”, “RR A/C”, “P/W (RR)”, “P/W (RL)”, “P/W (FR)”, “P/W (FL)”
5120A MAIN – “HEAD HI” relay, “HEAD” relay, fuses: “ABS NO.1”, “ABS NO.2”, “SHORT PIN A”, “EFI OR ECD NO.1”, “SHORT PIN B”, “AM2”, “STARTER”, “HORN”, “ECTS”
6140A ALT – Fuses: “J/B NO.1”, “J/B NO.2”, “J/B NO.3”, “HTR”