Toyota Land Cruiser Prado 120 represents the 3rd generation of the Toyota Land Cruiser Prado range and was produced in 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009 with both gasoline and diesel engines. During this time, the model has been restyled. In this material, we will show the locations of the electronic control units, a description of the fuses and relays of the Toyota Land Cruiser Prado 120 with their diagrams and photo examples. Highlight the cigarette lighter fuse.
The arrangement of the blocks and the purpose of the elements in them may differ from the one presented. Check the purpose of the elements with your diagrams on the box cover.
Contents
Passenger compartment
Location
General layout of boxes in the cabin
LHD
Assignment
- Air conditioning control unit (automatic air conditioning (cars without navigation))
- Key transponder amplifier
- Fuse box
- Electronic variable suspension control unit
- Stability Control Control Unit (VSC A / T)
- Body electrical control unit
- Anti-theft control unit
- Distribution block No. 1
- Distribution block No. 2
- Viscous Heater Amplifier
- Key transponder computer
- Distribution block No. 3
- Stability control control unit (VSC M / T)
- Air conditioning control unit (automatic air conditioning (cars with navigation)) / Air conditioning control unit (mechanical air conditioner)
- Engine control unit (M / T) / Engine and automatic transmission control unit (A / T)
- Central differential lock control unit / Rear differential lock control unit
- Relay box
- Network gateway block
- Navigation control unit
- Refrigerator amplifier
- Selector lever lock control unit
- Audio amplifier
- Airbag unit
RHD
Designation
- Body electrical control unit
- Fuse box
- Stability Control Control Unit (VSC)
- Network gateway block
- Airbag unit
- Navigation control unit
- Selector lever lock control unit
- Refrigerator amplifier
- Audio amplifier
- Relay box
- Central differential lock control unit / Rear differential lock control unit
- Electronic variable suspension control unit
- Engine control unit (M / T) / Engine and automatic transmission control unit (A / T)
- Air conditioning control unit (automatic air conditioning (cars with navigation)) / Air conditioning control unit (mechanical air conditioner)
- Distribution block No. 3
- Key transponder computer
- Viscous Heater Amplifier
- Distribution block No. 2
- Air conditioning control unit (automatic air conditioning (cars without navigation))
- Distribution block No. 1
- Anti-theft control unit
- Double door lock relay
- Key transponder amplifier
Fuse box
It is located at the bottom of the dashboard, behind a protective cover.
Example of a diagram on the back of the protective cover.
Diagram
Protected components
| 1 | 10A IGN – Fuel pump control unit, multiport fuel injection system / sequential multiport fuel injection system, ABS, VSC, A-TRC |
| 2 | 10A SRS – SRS airbag system |
| 3 | 7,5A GAUGE – Instrument Cluster |
| 4 | 7,5A ST2 – Multiport fuel injection system / sequential multiport fuel injection system |
| 5 | 30A FR WIP − WSH – Windscreen wiper and washer |
| 6 | 20A TEMS – Electronic Adjustable Suspension |
| 7 | 20A DIFF – Rear Differential Lock, Center Differential Lock |
| 8 | 15A RR WIP – Rear wiper |
| 9 | – |
| 10 | 30A D P / SEAT – LHD: Power driver’s seat |
| 30A P P / SEAT – RHD: Power passenger seat | |
| 11 | 30A P P / SEAT – LHD: Power passenger seat |
| 30A D P / SEAT – RHD: Power driver seat | |
| 12 | 15A PWR OUTLET – Socket |
| 13 | 10A IG1 NO.2 – Air conditioner, refrigerator |
| 14 | 15A RR WSH – Rear window washer |
| 15 | 10A ECU-IG – Gear selector lock, power windows, ABS, VSC, A-TRC, air conditioning, sunroof, sockets |
| 16 | 10A IG1 – ABS, VSC, A-TRC, air conditioning, charging system, heated rear window, reversing lamps, direction indicators, hazard warning lights |
| 17 | 7,5A STA – Fuel pump control unit |
| 18 | 20A P FR P / W – Front passenger window regulator |
| 19 | 20A P RR P / W – LHD: Rear right power window |
| 20A D RR P / W – RHD: Rear right power window | |
| 20 | 20A D RR P / W – LHD: Rear left power window |
| 20A P RR P / W – RHD: Rear left power window | |
| 21 | 10A PANEL – Instrument panel illumination |
| 22 | 10A TAIL – Side light, license plate light |
| 23 | 7,5A ACC – Automatic transmission control unit, sockets, power mirrors, audio system |
| 24 | 10A CIG – Cigarette lighter |
| 25 | 30A POWER – Windows, sunroof |
The fuses numbered 24 (CIG) and 12 (PWR OUTLET) are responsible for the cigarette lighter and sockets.
Some relays are attached to the back of the unit.
Diagram
Decoding
- R1 – Sound signal
- R2 – Side light
- R3 – Power relay (windows, sunroof)
- R4 – Sockets (ACC SKT)
Relay box
Diagram
Appointment
- R1 – Panel
- R2 – Reversing lamps
- R3 – Heated mirrors (MIR HTR)
Additional elements
Diagram
Assignment
- Sunroof control unit
- Distribution block
- Rear air conditioner relay
- Rear air conditioner amplifier
- Central locking receiver
Engine compartment
Location
General arrangement of boxs under the hood
Designation
- Relay box No. 1
- Fuse and relay box
- Relay box No. 2
- Headlight wiper relay
- Stability control control unit (without VSC)
- Relay box No. 3 (left hand drive)
- Relay box No. 3 (right hand drive)
Fuse and relay box
It is located on the left side next to the battery.
Example of a diagram from the box cover
Diagram
Protected components
| 1 | 10A Spare fuse |
| 2 | 15A Spare fuse |
| 3 | 20A CDS FAN – Cooling fan |
| 4 | 30A RR A / C – Rear air conditioner |
| 5 | 10A MIR HEATER – Heated mirrors |
| 6 | 10A STOP – Stop lights, auxiliary brake light, gear selector lock, ABS, VSC, A-TRC, height-adjustable rear suspension |
| 7 | – |
| 8 | 15A FR FOG – Front fog light |
| 9 | 7,5A VISCUS – Viscous heater |
| 10 | 7,5A OBD – Diagnostic connector |
| 11 | 10A HEAD (LO RH) – Low beam right |
| 12 | 10A HEAD (LO LH) – Low beam left |
| 13 | 10A HEAD (HI RH) – High beam right |
| 14 | 10A HEAD (HI LH) – High beam left |
| 15 | 10A EFI NO.2 – Oxygen sensor, MAF sensor |
| 16 | 7,5A HEATER NO.2 – Conditioner |
| 17 | 30A DEFOG – Heated rear window |
| 18 | 10A AIRSUS NO.2 – Height-adjustable rear suspension |
| 19 | 20A FUEL HEATER – Fuel heating |
| 20 | 20A SEAT HEATER – Heated seats |
| 21 | 10A DOME – Interior Lighting, Personal Lighting, Wireless Remote Control System, Ignition Switch Lights, Door Lights |
| 22 | 20A RADIO NO.1 – Audio system |
| 23 | 10A ECU − B – ABS, VSC, A-TRC, air conditioning, refrigerator, power windows |
| 24 | 10A ECU − B NO.2 – Body ECU |
| 25 | Short pin |
| 26 | 7,5A ALT − S – Charging system |
| 27 | – |
| 28 | 10A HORN – Sound signal |
| 29 | 15A A / F HEATER – Air fuel ratio sensor |
| 15A F / PMP – 1KD − FTV: Fuel pump | |
| 30 | 15A TRN − HAZ – Direction indicators, hazard warning lights |
| 31 | 10A ETCS – Multiport fuel injection system / sequential multiport fuel injection system |
| 32 | 20A Efl – Fuel pump control unit, fuel pump, multiport fuel injection system / sequential multiport fuel injection system |
| 25A Efl – 1KD-FTV: Fuel pump control unit, fuel pump, multiport fuel injection system / sequential multiport fuel injection system | |
| 33 | 20A D FR P / W – Driver’s window regulator |
| 34 | 25A DR / LCK – Central locking |
| 35 | – |
| 36 | 30A RADIO NO.2 – Audio system |
| 37 | 120A ALT – without PTC: Heated rear window relay, ignition relay, fuses: “HEATER”, “CDS FAN”, “AM1”, “J / B”, “VISCUS”, “OBD”, “MIR HEATER”, “STOP” “,” FR FOG “,” AIRSUS “,” RR A / C “and” STOP “ |
| 140A ALT – with PTC: Heated rear window relay, ignition relay, fuses: “HEATER”, “CDS FAN”, “AM1”, “J / B”, “VISCUS”, “OBD”, “MIR HEATER”, “STOP” “,” FR FOG “,” PTC-1 “,” PTC-2 “,” PTC-3 “,” AIRSUS “,” RR A / C “and” STOP “ | |
| 38 | 50A HEATER – Air conditioner |
| 39 | 50A AIRSUS – Height Adjustable Rear Suspension |
| 40 | 50A AM1 – Fuses: “ACC”, “CIG”, “IG1”, “IG1 NO.2”, “ECU-IG”, “FR WIP-WSH”, “RR WIP”, “RR WSH”, “DIFF” , “TEMS” and “STA” |
| 41 | 40A PTC-1 – Auxiliary heater (PTC) |
| 42 | 50A J / B – Fuses: “PWR OUTLET”, “P FR P / W”, “P RR P / W”, “D RR P / W”, “DP / SEAT”, “PP / SEAT”, “POWER ”,“ TAIL ”and“ PANEL ” |
| 43 | 40A PTC-2 – Auxiliary heater (PTC) |
| 44 | 40A PTC-3 – Auxiliary heater (PTC) |
| 45 | 40A ABS MTR – ABS, VSC, A-TRC |
| 46 | 30A AM2 – Starting system, fuses: “IGN”, “GAUGE” and “SRS” |
| 47 | 30A ABS SOL – without stability control system: ABS |
| 50A ABS SOL – ABS (Anti-lock Braking System), VSC (Vehicle Stability Control), A-TRC (Active Traction Control) | |
| 48 | 80A GLOW – Glow plugs |
| Relay | |
| R1 | Cooling fan (CDS FAN) |
| R2 | Auxiliary relay (ACC CUT) |
| R3 | Fog light |
| R4 | Starter (STA) |
| R5 | Ignition (IG) |
| R6 | Heater |
| R7 | A / C Compressor Clutch (MG CLT) |
| R8 | – |
| R9 | Heated rear window (DEFOG) |
| R10 | Anti-lock brake system pump (ABS MTR) |
| R11 | Active traction control (TRC MTR) |
| R12 | Anti-lock braking system (ABS SOL) |
| R13 | Downhill Assist (DAC) |
| R14 | Fuel pump (C / OPN) or EDU |
| R15 | – |
| R16 | Engine control unit (EFI) |
| R17 | Air Fuel Ratio Sensor (A / F HEATER) |
| R18 | Fuel pump |
| R19 | Headlights (HEAD) |
Relay box 1
- R1 – Starter (STA)
- R2 – Glow plugs (GLOW)
Relay box 2
- R1 – Air suspension (AIR SUS)
- R2 – Dimmer (with daytime running lights)
Relay box 3
- R1 – Auxiliary heater (PTC No. 1)
- R2 – Auxiliary heater (PTC No. 2)
- R3 – Auxiliary heater (PTC No. 3)
If you have something to add – write in the comments.
HI, I have a Toyota Land Cruiser Prado 120 . I just noticed there is no fuse in the ETCS slot in the main engine fuse box. It’s a 10 amp fuse and labeled “multiport fuel injection system/sequential multiport fuel injection system”. I’ve been driving it for almost 17 years. Should I put a fuse in? Could this have been an option not part of my engine?.
Looking forward for your reply. Thanks.
Hello,
Dear we are in a problem In ABS& TRC PART No.(89540-60240) We need ABS Wiring diagram
I can’t find the horn relay in my Toyota land cruiser Prado 2006 model petrol. Please advise.
Very important application very easy you find your fuse and realy location