Electrical Equipment and Appliances Toyota 4Runner 2 (N120)

General description of on-board electrical equipment
The electrical system operates at 12 volts and uses negative grounding. Power for the headlights and all other electrical components comes from a lead-acid battery, which is recharged by the generator. This chapter...

Technical data of electrical equipment
Ignition timing angle For vehicles with 4-cylinder engine: – with terminals TE1 and E1 connected to ground 3 – 7° before TDC – with terminals TE1 and E1 disconnected from ground 4 – 18° before TDC For vehicles with 3.4L...

Checking the voltage in the electrical system
A voltage check must be performed if the electrical circuit is faulty. Connect one of the test light probes to the negative terminal of the battery or (ground) of the vehicle. Connect the other probe to a connection in...

Short circuit detection
One method of locating the short circuit is to remove the fuse and connect a test light or voltmeter to the fuse terminals when all other electrical equipment in the circuit is off. There should be no voltage in the...

Checking the reliability of grounding
Perform a ground connection reliability check to verify that the electrical element is securely connected to (mass) a car. Disconnect the battery and connect one of the wires of the device for checking the integrity of...

Checking the integrity of the circuit
A continuity test is necessary to determine if there is a break in the circuit. Disconnect the power from the circuit and test the circuit for continuity using a light bulb with a power source connected. Connect the...

Finding an open circuit
Visually finding an open circuit can be quite difficult, since oxidized or poor contact connections are often difficult to notice. Sometimes it is enough to simply move the connecting wire or wire in the wiring harness...

Troubleshooting the Electrical System
The electrical circuits of a car include a consumer, switches, relays and wires connected according to the attached diagram (see below). Before you start looking for a fault, you should study the diagram and determine...

Fuses — location and description
Fuse box in the passenger compartment Engine compartment fuse box A. Fusible links B. Fuses S. Rele Fuses On the left is the burnt out one On the right is the working one The vehicle's electrical circuits are protected...

Fusible links
Fusible links are designed to protect a circuit under high current overloads. Links are used in high-current circuits that cannot be protected by a conventional fuse. The vehicles in question are equipped with...

Electrical circuit breakers
These devices protect the electric window drive circuits, door locks and headlights. On some vehicles, when the circuit is overloaded, the circuit breakers are triggered automatically and immediately close, and the...

Relay — description and testing
Relays are used for controlled switching on and off of a high-current consumer under the influence of a low-power electrical signal. In the vehicles under consideration, relays are included in the circuits of such...

Direction indicator/hazard warning flasher
Direction indicator and hazard warning flasher Examination 1. The circuit breaker is mounted in the relay and fuse box in the passenger compartment 2. Normal operation of the breaker is accompanied by clicking sounds....

Turn signal switch — checking and replacing
Examination 1. Disconnect the battery from ground. 2. Disable the airbag (see subsection 11.44 ). 3. Remove the steering wheel. 4. Remove the steering column cover. 5. Disconnect the connector from the turn...

Ignition switch and lock drum — checking and replacement
Examination 1. Disconnect the battery from ground. 2. Disable the airbag (see subsection 11.44 ). 3. Remove the steering wheel. 4. Remove the steering column cover. 5. Pry up and remove the ignition switch cover. 6....

Exterior Light Switch — Checking and Replacing
Numbering of the terminals of the external lighting switch and switch positions Examination 1. Disconnect the battery from ground. 2. Disable the airbag (see subsection 11.44 ). 3. Remove the steering wheel. 4. Remove...

Windscreen Wiper Switch — Checking and Replacing
Numbering of terminals of switches with increased operating frequency and with alternating cleaning and washing mode of glass 1. Switch with increased operating frequency 2. Switch with alternating glass cleaning and...

Headlight bulbs — replacement
1. Disconnect the battery from ground. 2. Disconnect the connector from the lamp holder. 3. Remove the waterproof cover. 4. Pull back the spring clip of the holder. 5. Remove the holder with the lamp. 6. Installation is...

Headlight adjustment
Attention! The headlight adjustment should be checked every 12 months, when replacing a headlight or after repairing the front part of the body. It should be noted that the described procedure allows only an approximate...

Headlight housing — removal and installation
Removal 1. Disconnect the battery from ground 2. Disconnect the connector from the headlight. 3. Remove the turn signal. 4. Remove the front grille or lower trim under the headlight. 5. To remove the headlight, unscrew...

Replacing lamps in lighting fixtures
1. Disconnect the battery from ground. Side direction indicator lamps 2. Loosen the top screw securing the pointer. 3. Remove the turn signal housing and disconnect the connector. 4. Turn the lamp holder...

Receiver and speakers — removal and installation
Receiver 1. Disconnect the battery from ground. 2. Remove the front center trim panel (see subsection 10.23 ). 3. Loosen the receiver mounting bolts (indicated by arrows) and move the receiver towards you, disconnect...

Radio Antenna — Removal and Installation
Attention! On some cars "Toyota 4 Runner/ Hilux/ Surf" a printed antenna is installed, all maintenance work on which is carried out in a car service center. 1. Remove the receiver and disconnect the plug. Disconnect all...

Windscreen wiper motor — check
Windscreen wiper motor connector Examination 1. If the wiper blades move too slowly, check the battery condition. If the battery is fully charged, remove the windshield wiper motor and check the freedom of movement of...

Front Windshield Wiper — Checking and Replacing
Wiring diagram for testing windshield wiper motor rotation at low speed Circuit diagram for checking the electric motor shutdown in the autostop position Examination 1. Connect the (-) terminal of the battery to...

Rear Windshield Wiper — Checking and Replacing
Rear wiper motor rotation test diagram Rear wiper motor terminal resistance test diagram Position of the rod when checking the rear wiper motor 1. Except A, B and C 1. Connect the ()-terminal of the battery to terminal...

Rear window defroster switch
Rear Window Defogger Switch Connector Pin Numbering Checking the operation of the rear window defroster timer 1. Disconnect the battery from ground. 2. Pry the switch out of the panel and disconnect the connector. 3....

Rear Window Defogger — Checking and Repairing
The heater consists of thin wires sintered with the glass surface. Minor damage to wires can be repaired independently. Examination 1. Turn on the ignition and heater. Connect a voltmeter between the heater terminals....

Instrument cluster — removal and installation
1. Disconnect the battery from ground. 2. Remove the dashboard trim. 3. Loosen the screws securing the shield (indicated by arrows). 4. Pull the shield towards you and disconnect the connectors. 5. Installation is...

Sound signal — check and replacement
Examination 1. By car "Toyota 4 Runner/ Hilux/ Surf" there are 2 sound signals installed on both sides of the radiator. 2. To check, disconnect the connector and connect the battery directly to the horn. If there is no...

Electric mirrors — check
Numbering of the terminals of the electric mirror switch 1. Left side; 2. Right side; 3. Up; 4. Down Mirror Motor Switch Terminal Numbering 1. The mirror is driven by 2 electric motors for vertical and horizontal...

Cruise control — description and check
The cruise control system maintains the vehicle's speed using an electric drive located in the engine compartment. The electric drive is connected to the throttle cable. The system includes a control unit, a brake light...

Electric window lifter
The electric window lifter operates the side windows and consists of switches, relays, electric motors, a window lifter and wires. A reversible electric motor is mounted in each door. The electric drive is activated...

Main window lifter switch
Main Power Window Switch Terminal Numbering Driver side switch. Unlocking and locking the window lifter 1. In the UP position of the switch, the circuit should be between terminals 3, 8 and 9, and also between terminals...

Front passenger window switch
Passenger Side Window Switch Pin Numbering Unlocking and locking the window lifter 1. In the UP position of the switch, the circuit should be between terminals 8, 9 and 11, and also between terminals 4, 5 and 13. 2....

Rear left window lift switch
Unlocking the window lifter 1. In the UP position of the switch, the circuit should be between terminals 8, 9 and 10, and also between terminals 4, 5 and 12. 2. With the switch in the OFF position, the circuit should be...

Rear right window lift switch
Unlocking the window lifter 1. In the UP position of the switch, the circuit should be between terminals 7, 8, 9 and also between terminals 4, 5 and 14. 2. In the OFF position of the switch, the circuit should be...

Passenger window power switches
Examination 1. In the UP position of the switch, the circuit should be between terminals 1 and 2, and also between terminals 3 and 5. 2. With the switch in the OFF position, the circuit should be between terminals 1 and...

Electric door lock drive — check
The electric drive consists of switches, a lock drive, a control unit and wires. The control unit is mounted in the passenger compartment, to the right of the fuse box. You can perform simple checks of the drive and...

Airbags — description and deactivation
Airbags (SRS pneumatic safety system) are designed to protect the driver (and the passenger) in the front seat in the event of a collision. Some vehicles are equipped with 2 airbags, one of which (from the driver's...

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