Equipment and electrical appliances VAZ-2121

Description of the electrical equipment of the car
The electrical equipment is made according to a single-wire circuit - the negative conclusions of the sources and consumers of electricity are connected to «weight», which acts as...

Car wiring diagram
The diagram of the electrical equipment of the car is shown in fig. 7-2. Pic. 7-2. Wiring diagram of vehicle electrical components: 1 - side direction indicators; 2 - front...

Sound signals
Vehicles have two horns (pic. 7-31): one is high and the other is low. Sound signals are placed in the engine compartment and mounted on a bracket attached to the left radiator...

Determination of malfunctions of sound signals
Causes of malfunctions of sound signals may be the following does not work or the switch sticks or the sound signal is damaged. To detect a malfunction, check the reliability of...

Possible malfunctions of wipers, their causes and methods of elimination
Wiper motor not working, fuse not blown Wiper motor not working, fuse blown Wiper motor not intermittent Wiper motor does not stop intermittently The wiper motor operates...

Windshield wiper repair
The electrical circuit for switching on the wiper is shown in fig. 7-33. A part of the windscreen wipers can be equipped with a thermal bimetal fuse to protect the electric motor...

Removal and installation of a screen wiper
The wiper is removed from the engine compartment in the following order: remove the brushes with levers; disconnect the wires from the battery and from the wiper motor; unscrew...

Dismantling, assembling and checking the technical condition of the wiper motor
Data for checking the electric motor: Maximum effective torque on the gearbox shaft*, Nm (kgf·m) — 2 (0,2) Current consumption* at 1 Nm torque (0.1 kgf·m), no more, A - 2.8...

Wiper relay test data
The number of inclusions per minute at a voltage of 10-14 V and a temperature from -20 to + 50°C - 9-17 Electromagnet winding resistance, Ohm — 66±2 Breaker winding resistance,...

Headlight cleaner
The scheme of switching on the headlight cleaners is shown in fig. 7-35. Pic. 7-35. Scheme of switching on the cleaner and headlight washer: 1 - right headlight cleaner motor; 2 -...

Possible malfunctions of the heater electric motor, their causes and methods of elimination
Electric motor not working Motor armature rotates slowly

Heater motor repair
Data for verification Rated voltage, V - 12 Rated power, W - 20 Frequency of rotation of the armature shaft with impeller at rated power, min -1 — 3000±150 Current consumption at...

Possible malfunctions of control devices, their causes and methods of elimination
Instrument fuse keeps blowing The pointer of the coolant temperature gauge is constantly at the beginning of the scale The arrow of the coolant temperature gauge is constantly in...

Removing the instrument panel
To remove the instrument panel to replace a defective instrument or a burnt-out lamp, press the clips 3 (pic. 7-38) firmware 4 through the special holes in the lower part of the...

Instrument Troubleshooting Technique
The scheme of switching on the devices is given in fig. 7-39. The scheme for switching on the control lamps for the battery charge, side light, high beam headlights and direction...

Instrument check
Coolant temperature gauge Device type - UK-193; The device operates in conjunction with the TM-106 sensor. With a sensor resistance of 640-1320 ohms, the arrow should be at the...

Checking sensors of control devices
Fuel gauge sensor Sensor type BM-168. It is installed in the fuel tank and fastened to it with screws. The sensor has a variable resistor made of nichrome wire. The moving contact...