Saab 9-5

Since 1997 of release

Repair and car operation

Saab 9-5
+ Cars Saab 9-5
+ Controls and operation receptions
+ Options and car routine maintenance
+ The engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
+ The power supply system and release of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   The general information
   Diagnostics of malfunctions of an onboard electric equipment - the general information
   Safety locks - the general information
   The relay - the general information and check of serviceability of functioning
   Podrulevye switches
   Combination of devices
   Removal and installation of lighting devices and replacement of their lamps
   Adjustment of an inclination of headlights
   Removal and installation of gauges of adjustment of an inclination of headlights
   Removal and horn installation
   Screen wipers and стеклоомыватели
   Gauges of system of the help at a parking
   Removal and installation of an audiosystem and rosin.
   Removal and installation of components of system SRS
   Removal and installation of blocks of management DICE and TWICE
   + Electric equipment schemes

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

The general information

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 of system of cooling, antifog headlights and other) are used the relay. Actually the relay represents the electric key providing short circuit В/В of a contour on a low-voltage signal. In case of a relay exit out of operation there is a refusal of functioning of the corresponding consumer. Relays are established in the assembly block under the panel of devices and in the assembly block in an impellent compartment (the Block of the relay and safety locks in an impellent compartment see an illustration). The description of check of serviceability of functioning of the relay is resulted more low. The failed relays are subject to replacement.

 The relay block under the panel of devices


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 (schemes are resulted in the end of the head), it is necessary to remember that the approach to check of any relay basically is identical in all cases.

In most cases the management contour always is connected to two of contact plugs of the relay. At giving on these plugs of low-voltage 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 (В/В) 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.


    Before relay removal make sure that the corresponding contour is disconnected. 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. At the connected wires-crosspieces check up conductivity presence between contour plugs V/V, having connected an ohmmeter according to the key scheme on the relay case. At negative result of check replace the relay.