All articles about the installation and repair of electrical equipment and instruments of VAZ-2115 cars (Lada Samara 115, sedan) and their modifications.
Safety measures when working with electrical equipment When repairing electrical equipment and the engine power system, disconnect the wire from the terminal «–» battery. When replacing fuses, it is forbidden to use screwdrivers and...
Location of fuses and relays Most vehicle electrical power circuits are protected by fuses. The circuit for charging the battery, the circuit for ignition and starting the engine, and the generator are not...
Removal and installation of the fuse mounting block The relay and fuse box is installed in the engine compartment, in the compartment in front of the windshield on the left side. You will need: key «on 10», screwdriver. 1....
Mounting block repair Repair of the mounting block consists in the replacement of printed circuit boards. It is allowed to solder wires to replace burned out current-carrying tracks on printed circuit...
Design features of the ignition switch A switch is installed on the car (lock) ignition type 2110-3704005 or KZ-881. The ignition lock is equipped with an anti-theft locking device, a starter re-engagement blocking...
Checking the ignition lock This is the conditional numbering of the contacts of the wiring harness block. Please note that the shoe socket is asymmetrical (landmark - mounting ledge). You will need an...
Removal and installation of the ignition lock You will need: chisel, hammer, screwdriver. 1. Disconnect the wire from the terminal «–» battery. 2. Remove the steering wheel (see « Removal and installation of a steering wheel...
Replacing the contact group of the ignition switch You will need: chisel, hammer, screwdriver. 1. Remove the ignition switch (see « Removal and installation of the ignition lock »). 2. Disconnect the wiring harness from the...
Checking and replacing steering column switches Steering column lever positions: bold lines show initial positions, thin lines show fixed positions, dotted lines show non-fixed positions of levers The serviceability of the...
Adjustment and replacement of a sound signal Cars can be equipped with sound signals of types C-304 and C-305 (collapsible) or 20.3721-01 and 201.3721-01 (non-separable). The horn is located in the engine compartment and is...
Replacing the horn slip ring You will need a screwdriver. 1. Disconnect the wire from the terminal «–» battery. 2. Remove the steering wheel (see « Removal and installation of a steering wheel »). 3. Remove...
Design features of windshield wipers and washers The windshield wiper consists of an electric drive, levers and brushes. The movement of the brushes is parallel. The connection diagram of the purifier is shown in the figure...
Removal, repair and installation of a screen wiper You will need: keys «on 10», «at 24», screwdriver. 1. Disconnect the wire from the terminal «–» battery. 2. Turn both brush arms to the vertical position and unscrew the nuts...
Removal and installation of a washer reservoir 1. Disconnect the block with the wire from the washer fluid level sensor. 2. Disconnect blocks with wires from electric pumps of washers of a wind window and a window of a door of...
Electric motor of the heater fan Heater fan electric motor type 45.3730, with permanent magnet excitation. Motor switching circuit: On the diagram of switching on the heater fan electric motor and rear window...
Removal and installation of the heater fan The heater fan is located in a compartment in front of the windscreen under the hood. It can be removed without removing the heater from the vehicle. You will need a screwdriver....
Replacing the auxiliary heater resistor The resistor is used to select the fan operation mode. It has two spirals with a resistance of 0.23 and 0.82 ohms. By turning the knob on the heater control panel, you can turn on...
Electric motor of the cooling system fan To drive the fan of the engine cooling system, a DC electric motor with excitation from permanent magnets of domestic production of the ME-272 type or a similar one manufactured...
Rear window heating (and tailgate glass) The heated rear window heating element is connected via relay type 904.3747 installed in the mounting block . Voltage is supplied to the heated rear window switch only when the...
Design features of the instrument cluster All control and measuring devices of the car are combined in instrument cluster . It includes an electronic speedometer and tachometer, a liquid crystal display of the total and...
Removal and installation of a combination of devices You will need a screwdriver. 1. Disconnect the wire from the terminal «–» battery. 2. Remove the instrument panel shield (see « Removal and installation of a guard of the panel of...
Replacing indicator lamps in the instrument cluster In the instrument cluster, control lamps A12-1.2 are installed. 1. Disconnect the wire from the terminal «–» battery. 2. Remove the instrument cluster (see « Removal and...
Possible malfunctions of the instrument cluster Cause of malfunction Remedy Temperature gauge or fuel gauge not working damaged instrument cluster Check instrument cluster and replace if defective Device sensor defective...
Instrument Troubleshooting Technique Coolant temperature gauge . When the pointer needle is constantly at the beginning of the scale, disconnect the wire from the pointer sensor with the ignition on and connect the...
Instrument check The instrument cluster is equipped with a built-in self-diagnosis system. This system allows you to test the instrument cluster on the car. With the ignition off, press and hold...
Checking sensors of control devices A thermistor is installed in the coolant temperature indicator sensor, which changes its resistance depending on the temperature of the coolant. To check the sensor, measure the...
Instrument Light Switch Replacement You will need pliers. 1. Disconnect the wire from the terminal «–» battery. 2. Remove, by pulling towards you, the handle of the hydrocorrector.. 3.... and the instrument lighting...
Hazard Switch Replacement You will need a screwdriver. 1. Disconnect the wire from the terminal «–» battery. 2. Remove the steering column trim (see « Removal and installation of facings of a steering...
Replacing the low oil pressure warning light sensor You will need a key «at 22». 1. Disconnect the wire from the terminal «–» battery. 2. Disconnect the block with the wire from the sensor. 3. Turn out the gauge from the block of...
Replacing the coolant temperature gauge sensor You will need a key «at 22». 1. Disconnect the wire from the terminal «–» battery. 2. Drain the coolant (see « Coolant replacement »). Helpful hints: It is possible not to drain...
Replacing the coolant level sensor in the expansion tank The coolant level sensor is installed in the expansion tank of the cooling system. 1. Disconnect the wire from the terminal «–» battery. 2. Disconnect the harness connector from...
Replacing the engine oil level sensor You will need a key «on 10». 1. Place the vehicle on a pit or lift. 2. Disconnect the wire from the terminal «–» battery. 3. Disconnect the wiring harness connector from the oil...
Reversing light switch replacement The reversing light switch is mounted on the gearbox from below. You will need a key «at 22». 1. Disconnect the wire from the terminal «–» battery. 2. Raise the vehicle with a...
Trip computer The trip computer, installed on some of the produced cars, is designed to measure, accumulate and display one of the seven parameters: fuel consumption (current, average, total);...
On-board monitoring system display unit The on-board control system display unit contains an electronic control circuit with a sound signaling device and seven LED signaling devices: insufficient oil level, insufficient...
Features of the design of power windows doors Some of the produced cars are equipped with power windows for lowering and raising the windows of the front doors. In the mechanism of power windows, instead of the gear reducer...
Electrically heated front seats On some cars, a heating system for the front seats is installed. The scheme of switching on the heating of the front seats: – heaters of the left forward seat; 2 – the switch of a...
Removal and installation of the cigarette lighter You will need a screwdriver. 1. Disconnect the wire from the terminal «–» battery. 2. Turn out screws and remove the left overlay of the central console of the panel of devices....
Door lock system The door lock system is designed to simultaneously lock the locks of all doors when locking the left front door lock with a key, as well as when pressing the left front door lock...