Auto Manual of VW Passat B5
The maintenance instruction
1. Maintenance service
3. Cooling system
4. Fuel system
5. Engine management
6. An exhaust system
8. A running gear
9. A steering
10. Brake system
11. A body
12. Heating, ventilation
- 13. An electric equipment
13.2. The general information
- 13.3. Electric chains
13.3.1. Detection of not closed chain
13.4. Safety locks
13.5. Rules of care of the accumulator
13.6. Accumulator check
13.7. Accumulator gymnastics
13.8. The accumulator
13.9. Gymnastics system
13.10. The generator
13.11. Replacement of brushes of the generator and a pressure regulator
13.12. System of start of the engine
13.13. A starter
13.14. The traction relay of a starter
13.15. Replacement of bulbs of external illumination
13.16. Replacement of bulbs of internal illumination
13.17. Devices of external illumination
13.18. The executive engine of the proof-reader of light of headlights
13.19. Adjustment of light of headlights
13.20. Gas-discharge lamps of headlights of a passing light
13.21. A combination of devices
13.22. Multipurpose switches of a steering column
13.24. A radio receiver
13.25. High-frequency loudspeakers
13.26. Low-frequency loudspeakers
13.27. The aerial
13.28. Check of a heater of back glass
13.29. The engine of a screen wiper of a windscreen
13.30. The engine of a screen wiper of back glass
13.31. The pump стеклоомывателя
13.32. System of the central blocking of locks
13.33. The basic malfunctions of the generator
13.34. The basic malfunctions of a starter
13.35. Electric schemes
The usual electric chain consists of an electric element, switches, the relay, engines, protect телей, automatic switches, wires and sockets which connect an electric element to the accumulator and a body. For the help by search of sources of malfunction of system of an electric equipment, in the end of a management schemes of an electric equipment of the car are resulted.
Before to try to define a malfunction source, in the beginning study the corresponding scheme of an electric equipment for representation reception about the elements established in this chain. The circle of possible sources of malfunction can be narrowed if to check up functioning of other elements entering into the given chain. If some elements or chains выхолят out of operation simultaneously the problem, obviously, consists in a safety lock, the general for these chains or elements, or contact to a body.
Electric problems are usually caused by the simple reasons, such, as the weakened or rusted sockets, absence of contact to a body, the fused safety locks, fused ся a burnt through crosspiece or the faulty relay. Visually check up a condition of all safety locks, wires and sockets in the failed chain before to start check of other elements. Use schemes of an electric equipment for that definition what of trailer clips are necessary for checking up for detection of a source of malfunction.
The basic tools necessary for detection of a source of malfunction are the tester or the voltmeter (a bulb on 12 volt and the pair of wires with щупами on the ends, also can be used for carrying out of some checks); an ohmmeter; the battery and a set of wires with щупами, накидной a puncture, it is desirable with the automatic switch or a safety lock which is used for detour of checked wires or elements.
For detection of the reason of unreliable work any of elements (usually because of bad connection or pollution of contacts, or), it is possible to inspect the damaged isolation by stirring of wires. It is necessary to shake a wire by a hand to check up, whether there is a malfunction at wire movement. Such метолом it is possible to narrow a circle of possible sources of malfunction to any wire.
Along with problems because of bad connection of the wires, two basic types of malfunctions can take place in electric equipment system – the opened chain or short circuit.
Problems with the opened chain appear as a result of breakage in an electric equipment chain that interrupts current course. The opened chain will cause switching-off of an element of an electric equipment.
Problems with short circuit are caused by short circuit of a site of a chain that leads to leak of a current from other chain, usually directly on a body. Short circuit is usually caused by rupture of isolation of wires that allows a wire to concern other wire or any earthed element, for example bodies. Short circuit usually leads перегоранию a corresponding safety lock.
Connect the second щуп to connection in a checked chain, it is desirable for the nearest to the accumulator or protect лю. Thus this site of a chain should be energised from the accumulator if only the connection socket to the accumulator does not spend a current or has not fused a safety lock (thus do not forget that some chains электрооборудо вания join only at key turn in the ignition lock in certain position).
Include a chain, then connect щуп a tester to the connection nearest to the switch of a chain on the party of the checked element.
If pressure is present (about what the control bulb testifies or voltmeter indications), it means that a site appreciate between corresponding connection and the switch has no ruptures.
Continue chain check by the same image, and after site detection on which there is no pressure, it means that chain rupture has occurred between this point and a point of the previous check on which there was a pressure. The majority of problems of the opened chain are caused by the broken or weakened socket.
Remove corresponding protect тель and connect щупы a tester or the voltmeter to safety lock plugs.
Include a food in chains, thus do not forget that some chains of an electric equipment join only at key turn in the ignition lock in certain position.
If pressure is present (about what the control bulb testifies or voltmeter indications), it means that in a chain there is a short circuit.
If at carrying out of check of pressure is not present, however the safety lock on the former fuses at connection of that loading of a chain, it testifies to failure of an element of loading.
For check of reliability of grounding of an element, it is necessary to disconnect the accumulator and to connect one of щупов an ohmmeter to reliably earthed element. Connect another щуп to a wire пли to connection with a body which is necessary for checking up. Resistance shown by an ohmmeter should be equal to zero; if is not present, check up connection as follows.
If you assume absence of grounding, disassemble connection and clear a site of a body and the wire plug (or a surface of grounding of an element) to pure metal. Carefully remove all traces of a dirt, then by means of a knife remove all paint so that reliable contact of two metal surfaces has turned out. At assemblage, reliably tighten socket fastening; at connection of the plug of a wire, establish a washer with the jagged edges between the plug and a surface of a body for maintenance of reliable connection. At connection, prevent corrosion occurrence in the future, having put a layer of vaseline or silicone greasing.