Service Infiniti QX4 since 1996 of release
1. Introduction
2. The maintenance instruction
3. Routine maintenance
4. The engine
5. Cooling and heating systems
6. Power supply systems and managements
7. Start and charge systems
8. A transmissionnaja line
9. Brake system
10. A suspension bracket and a steering
11. A body
12. An electric equipment
12.1. Specifications
12.2. Search of causes of failures of an electric equipment
12.3. Electric sockets - the general data
12.4. Safety locks and fusible inserts - the general information
12.5. Chain breakers - the general information
12.6. The relay - the general information and check of serviceability of functioning
12.7. Check of serviceability of functioning and replacement of the breaker of indexes of turns / the alarm system
12.8. Replacement of lamps of lighting devices
12.9. Check of serviceability of functioning and regenerative repair of a heater of back glass
12.10. System of additional safety (SRS)
12.11. Schemes of electric connections
 












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12.6. The relay - the general information and check of serviceability of functioning


The scheme of an arrangement of electric components in an impellent compartment of the car


The scheme of an arrangement of elements in the assembly block of the relay № 1

For giving of power supplies or a management signal on some of electric power consumers in the car (such as components of system of injection of fuel, a horn, a starter, the fan (cooling systems, antifog headlights and so forth) Relays are used. Actually, the relay represents the electric key providing short circuit ВВ of a contour on НВ to a signal. In case of a relay exit out of operation there is a refusal of functioning of the corresponding consumer. The relay most part is placed in the assembly blocks which are located in assembly blocks in an impellent compartment (blocks №№ 1 and 2 — see an illustration the Scheme of an arrangement of electric components in an impellent compartment of the car) and in car salon (illustrations the assembly block of safety locks / of the relay Located in an impellent compartment (№ 2), the Arrangement of two breakers of a chain in салонном the assembly block of safety locks / of the relay see , the Scheme of an arrangement of elements in the assembly block of the relay № 1). The description of check of serviceability of functioning of the relay is resulted more low. The failed relays are subject to replacement.


Check

If it is not possible to find out a way of inclusion of the relay in a corresponding electric contour under schemes of electric connections, it is necessary to remember that the approach to check of any relay basically is identical in all cases (see further).

In the majority of the relay the management contour is always connected to two of contact plugs. At giving on these plugs NV of pressure the current starts to circulate on a winding of management of the relay therefore there is a short circuit of the big contacts of a working contour of the consumer of the electric power. Other plugs are plugs working (ВВ) a contour.

For the purpose of simplification of identification of plugs of the relay explanatory marks are usually put on its case with the image of the scheme of connection of keys (see resulted below the scheme).


The constructive scheme of the typical 4-contact relay with numbering of plugs and planimetric connections


The constructive scheme of the typical 4-contact relay with numbering of plugs and planimetric connections

 PERFORMANCE ORDER

  1. Connect the wire-crosspiece equipped with a safety lock between one of plugs of management of the relay and the positive plug of the battery. By means of the second wire-crosspiece earth the second plug of management, — the relay should publish click. Some relays demand obligatory observance of polarity of connection, — if click has not occurred, try to change polarity of connection of plugs of management.
  2. At the connected wires-crosspieces check up conductivity presence between contour plugs VV, having connected an ohmmeter according to the key scheme on the relay case.
  3. At negative result of check replace the relay.


On page back
12.5. Chain breakers - the general information
On the following page
12.7. Check of serviceability of functioning and replacement of the breaker of indexes of turns / the alarm system