The direction the vehicle is turning is indicated by a flashing light in the front and rear direction indicators
The direction indicators are switched on by a switch located under the steering wheel
Pushing the lever up will turn on the right turn indicators, moving the lever down will turn on the left. By moving the lever towards you or away from you, you switch the headlights.
By moving the lever towards you to the non-fixed position, the headlights are switched on for a short time (for signaling).
When the handle is moved along the axis of the lever, a beep sounds*. *
On some cars, the horn is activated by the wiper and washer switch.
The switch consists of a mechanical drive that provides manual activation, and a switch designed to connect the electrical circuits of signal lamps to a current source.
When the spiral of one of the signal lamps burns out, the blinking frequency of the indicator lamp doubles.
Fig. 1. Connection diagram of the contacts of the turn signal and light switch in various positions of the handle
Violation of the clarity of switching on and the absence of light in the direction indicators can occur as a result of burning the switch contacts, as well as due to malfunctions of the lamps and their cartridges.
To troubleshoot, first make sure that the lamps and their sockets are in good condition.
Change bulbs only when the turn signal switch is off and the hazard warning switch is off.
Check the correct operation of the switches 3302.3709100 and 1102.3769 using a test lamp according to the connection diagrams, respectively, shown in fig. 1 and 2.
Fig. 2. Connection diagram of the contacts of the turn signal switch, light and sound signal
The effort of moving the lever should be in the range of 5-25 N (0.5-2.5 kgf).
The voltage drop across the terminals should be no more than 0.3 V at 5 A. If the switch is not working properly, replace it.
Fig. 3. Scheme for checking the presence of voltage in the turn signal relay block: 1 - control lamp; 2 - wiring harness connector
Turn signal and alarm breaker 494.3747
Fig. 4. Circuit for checking the turn signal breaker
To create intermittent operation of the direction indicators, the 494.3747 indicator and alarm breaker is used.
The interrupter provides intermittent operation of signal lamps at a frequency of (90 ± 30) cycles per minute.
The interrupter has the function of monitoring the health of signal lamps.
If one of the signal lamps burns out or there is no contact when the direction indicators are turned on, the breaker provides intermittent operation of the control lamp at a frequency of 240 ± (30) cycles per minute.
The breaker is a non-repairable item. The serviceability of the breaker should be checked according to the diagram in Fig. 4.
If the signal lamps do not light, burn constantly or do not burn at the specified frequency, they must be replaced.
Turn signal, headlight and horn* switch
The direction in which the vehicle is turning is indicated by a flashing light in the front and rear direction indicators. The direction indicators are switched on by a switch located under the steering wheel.
By moving the lever towards you to the non-fixed position, the headlights are switched on for a short time (for signaling).
When the handle is moved along the axis of the lever, a beep sounds*. * On some cars, the horn is activated by the wiper and washer switch.