Mazda 3 since 2003
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
7.1. General information
7.1.1. Definition of a source of malfunction
7.1.2. Safety locks
7.1.3. Relay
7.2. System of power supply
7.3. System of lighting
7.4. Screen wipers and windscreen washers
7.5. Immobilizer
7.6. Checks of electric equipment
7.7. Tables
8. Body


7.1.3. Relay

The relay is an electronically controlled switch which is usually used as follows:
– switches big currents remotely from a chain in which this current flows, allowing to use thinner wires and contacts of switches;
– has more than one managing director of an entrance unlike the mechanical switch;
– performs function of the timer, for example sets an interval of work of screen wipers.
If the electric chain operated by the relay fails also a cause of defect, perhaps, the relay is, listen to operation of the relay at the included system. If the relay regularly works, then you have to hear click at its inclusion. If the relay is serviceable, then the cause of defect is concluded in elements or the connecting wires. If the relay does not work, it means that it does not receive the main power supply or the operating impulse or the relay is faulty.
The majority of the relay is installed in the block of safety locks and the relay located in a motor compartment.
Some specialized relays are located separately or in separate blocks under the dashboard and in a motor compartment.

"previous page
7.1.2. Safety locks
following page"
7.2. System of power supply