Fuses and relay blocks for Toyota Land Cruiser Prado (J120) (2002-2009) with diagrams and descriptions

Fuses and relays in the cabin

To eliminate a system malfunction in the vehicle's electrical network, all precautions must be taken. You cannot use devices of a higher rating, objects not suitable for these purposes, homemade “bugs” or just wire. In case of frequent breakdowns, you should find the main reason for the increase in current strength in the vehicle network, and then begin to eliminate it.

There are 2 options for location - right and left hand drive. Photo of fuses for Land Cruiser Prado 120 4 liters in the cabin:

In the Toyota Prado 120, all fuses are installed on the instrument panel behind a plastic cover, and the relay is on the back of the mounting block.

Cigarette lighter and dimensions

On the Prado 120 4 liter, the cigarette lighter fuse is located in the same place where the TEMS and SRS (airbag system) are located - on the instrument panel in the cabin, has the serial number 24 and the abbreviation “CIG”.

The fuse for Prado 120 dimensions, regardless of which steering wheel (right or left), is marked “TAIL” No. 22 of the interior block. If it malfunctions, the turns do not turn on (do not light up), and the vehicle license plate illumination disappears. Relay No. 2 is also responsible for the sidelights.

TEMS system

The fuses of the TEMPS system in the Land Cruiser Prado 120 4 liters on the specified panel have serial number 6 and are marked “TEMS”. This electronically adjustable suspension was developed by Toyota for its line of cars. This system has several driving options (comfortable, sporty, ultra-comfortable, semi-sporty) and allows the car to respond adequately in the event of sharp turns, fast braking, and off-road driving. TEMS itself reconfigures the load on the Toyota Prado 120 axle, the stiffness of the shock absorbers, the height of the chassis, maintains vehicle stability and counteracts body roll to the side and in the transverse direction, as well as “nose dive” in case of braking.

Other

The following are responsible for lifting, cleaning and washing the front, side, rear windows and hatch:

• FR WIP−WSH (5);
• RR WIP (8);
• RR WSH (14);
• P FR P/W (18);
• P RR P/W, D RR P/W (19);
• P RR P/W, D RR P/W (20);
• POWER(20);
• power relay – R3.

Fuses for the socket in the cabin - PWR OUTLET (12), for the seats - DP/SEAT, PP/SEAT (10, 11), for the fuel pump - STA (17).

Fuse and relay diagram Toyota Land Cruiser Prado 120 / 125 (2002-2009)

Detailed explanation with photos, electrical diagram of fuse and relay blocks for Toyota cars.

Salon

LHD

1. Air conditioning control unit (automatic air conditioning (vehicles without navigation))
2. Key transponder amplifier
3. Fuse box
4. Electronic adjustable suspension control unit
5. Stability control control unit (VSC A/T)
6. Body electrical control unit
7. Anti-theft control unit
8. Distribution block No. 1
9. Distribution block No. 2
10. Viscous heater amplifier
11. Key transponder computer
12. Distribution block No. 3
13. Stability control control unit (VSC M/T)
14. Air conditioning control unit (automatic air conditioning (vehicles with navigation)) Air conditioning control unit (manual air conditioning)
15. Engine Control Module (M/T) Engine and Automatic Transmission Control Module (A/T)
16. Center differential lock control unit Rear differential lock control unit
17. Relay block
18. Network Gateway Block
19. Navigation control unit
20. Refrigerator amplifier
21. Gearbox selector lock control unit
22. Audio amplifier
23. Airbag unit

RHD

1. Body electrical control unit
2. Fuse box
3. Stability control control unit (VSC)
4. Network Gateway Block
5. Airbag unit
6. Navigation control unit
7. Gearbox selector lock control unit
8. Refrigerator amplifier
9. Audio amplifier
10. Relay block
11. Center differential lock control unit Rear differential lock control unit
12. Electronic adjustable suspension control unit
13. Engine Control Module (M/T) Engine and Automatic Transmission Control Module (A/T)
14. Air conditioning control unit (automatic air conditioning (vehicles with navigation)) Air conditioning control unit (manual air conditioning)
15. Distribution block No. 3
16. Key transponder computer
17. Viscous heater amplifier
18. Distribution block No. 2
19. Air conditioning control unit (automatic air conditioning (vehicles without navigation))
20. Distribution block No. 1
21. Anti-theft control unit
22. Double door lock relay
23. Key transponder amplifier

Fuse box in the passenger compartment

Relay box in the cabin

5 door cars

1. Sunroof control unit
2. Distribution block
3. Rear A/C Relay
4. Rear air conditioner amplifier
5. Central locking receiver

3 door cars

1. Sunroof control unit
2. Distribution block
3. Central locking receiver

Engine compartment

1. Relay block No. 1
2. Fuse box
3. Relay block No. 2
4. Headlight wiper relay
5. Stability control control unit (without VSC)
6. Relay block #3 (LHD)
7. Relay block #3 (RHD)

Fuse box in the engine compartment

Relay block (No. 1)

Relay block (No. 2)

Relay block (No. 3)

On the website avto-fresh.com you can find a diagram of fuses and relays for Toyota Land Cruiser Prado 120 / 125 (2002-2009) photos and descriptions of the blocks, as well as answers to questions about where it is located and what it is responsible for. The designation of electrical equipment is described in detail in the article.

Under the hood

There are over 40 fuses and 19 relays under the hood. In addition, 7 more relays are combined into 3 independent blocks.

Problems in the main mounting block often occur when the battery is not charged correctly.

Air suspension and air conditioning

Air suspension fuses in a Prado 120 4 liter car - AIRSUS (39), AIRSUS NO.2 (18). The air suspension relay - AIR SUS is located in block No. 2.

Cars equipped with air suspension are more stable on the road and have less roll compared to cars with springs, including when driving off-road.

Other popular Prado 120 fuses:

• air conditioning – rear 4 (RR A/C), 16 (HEATER NO.2);
• radios - 22, 36 (RADIO NO.1, RADIO NO.2);
• fuel pump (fuel pump) - 29, 32 (A/F HEATER, F/PMP, Efl).

The starter relay (STA) in the Prado 120 4 liter car is in the main mounting block (R4) and in the relay block No. 1 (R1).

Fuse box in the engine compartment

Fuse box location

Fuse box diagram

Purpose of fuses and relays in the engine compartment

Relay block No. 1

Relay block No. 2

Changing fuses correctly

Not every Prado 120 driver knows what to do if the fuse fails. Before you familiarize yourself with the sequence of actions for replacing a part, you need to understand whether it really needs to be replaced:

1. They are looking for a block of fuse links to which non-functioning units lead.
2. Find the fuse connected to the electrical appliance. The diagram will speed up the search.
3. Use special tongs to remove the fusible insert.
4. Inspect it for visual damage and defects. If the owner finds deficiencies, then it needs to be replaced.

Checking the fuse: 1. Good fuse. 2. Blown fuse.

The damaged fuse is replaced with a serviceable one, which is purchased at the store. Plastic must have a flat surface, and on metal there should be no change in cross-section. If you have any concerns, test it before installing.

Fuse set

Instructions:

• Buy a second Prado 120 fuse link as a spare for the main one.
• Attach to the metal bases of the cable fuse.
• Connect one end to the plus, the other to the minus.

See how the fuses behave. A high-quality one will burn out, a low-quality one will melt.

Replacement consists of installing a new fuse-link instead of the damaged one. Check out some details:

• If necessary, identify and eliminate the cause of the short circuit so that the new product does not deteriorate again.
• There are three types of machine fuses: mini, medium and maximum. Each size fits into its proper place.
• The current strength in the fuse link should not exceed the nominal value, otherwise the Prado devices will burn out.
• The unit should not contain bare wires that are connected to the housing to prevent a short circuit.
• After installation, the parts are checked for correct functioning of all electrical components.