Mazda 3 since 2003
1. Operation and car maintenance
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. Power supply system
7.3. Lighting system
7.4. Screen wipers and stekloomyvatel
7.5. Immobilizer
7.6. Electric equipment checks
7.7. Tables
8. Body



7.1.3. Relay

The relay is an electronic operated switch which is usually used as follows:
– switches big currents distantly 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;
– carries out timer function, for example sets an interval of work of screen wipers.
If the electric chain operated by the relay, fails also a cause of defect, probably, the relay is, listen to operation of the relay at the included system. If the relay regularly works, you should hear click at its inclusion. If the relay is serviceable, the cause of defect is concluded in elements or connecting wires. If the relay does not work, it means that it does not receive the main power supply or an operating impulse or the relay is faulty.
The majority of the relay is established 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.

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7.1.2. Safety locks
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7.2. Power supply system