Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
- Tools and devices
Check of control tools and bulbs
The combined device
Speedometer
Tachometre
Hours
The indicator of quantity of fuel
The indicator of temperature of a cooling liquid
Auxiliary devices
Control bulbs above in the combined device
Control bulb of a cooling liquid
Control bulb of level of a brake liquid
Control bulb of pressure of oil
Control bulb of indexes of turns
Control bulbs in devices of the round form (and nearby)
Control bulb of indexes of turn on the trailer
Control bulb ASR
Control bulb of the lock of ignition
Control bulb of headlights of a headlight
Control bulb of a pillow of safety
Control bulb ABS
Control bulb of a lay brake
Control bulb of gymnastics of the accumulator
System of the autocontrol of the car
Switches
The ignition lock
Check of switches
Alarm buzzer of illumination
Cigar Lighter
Warmed back glass
Check of screen wipers and windscreen
The engine of screen wipers
The help at malfunctions
Gulf of a liquid for washing of glasses
System of washing of headlights
Adjustment of a mirror with the electric drive
The central lock
window raiser with the electric drive
Sliding/demountable roof with the electric drive
Radio receiver
The aerial on back glass
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics
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The aerial on back glass
As the aerial for reception of average waves in this type of aerials three metal current-carrying paths in the top of glass are used.
For VHF reception other current-carrying paths which simultaneously serve as heating elements serve. The insufficient height of this system of aerials is compensated by the amplifier under the left back facing of a rack of a roof.
Search of malfunctions in the aerial of back glass
Back facing of a rack of a roof can be removed, having shown a great patience and dexterity, in cars with a leaning back back of a back seat without others разборочных works. But in cars with a rigid back without its dismantle not to manage. As a whole work is facilitated after dismantle of a back reception pocket and lateral facing of a leaning back seat (the head Salon).
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- Remove both facings of racks of a roof behind.
- Check up connection with weight of heating of back glass on the right rack of a roof, and also, whether the aerial amplifier fixing screws is reliably connected to weight.
- Attentively check up the top three current-carrying paths on back glass: whether there is a visible rupture? If yes, carry out repairs by a current-carrying silver varnish or put new back glass.
- Now electric check follows: Disconnect a socket thin white токоподводящего wires above on the amplifier, measure pressure concerning weight. For this purpose include a radio receiver.
- Presence pressure from the accumulator: current giving on the amplifier is perfectly in order. There is no pressure: eliminate rupture in a wire.
- On the same wire measure a current between a socket of the amplifier and the removed wire.
- The ampermeter should show 30–50 мА, otherwise the amplifier of the aerial does not consume a current and, hence, it is faulty – replace.
- The following check: disconnect the bottom wire on warmed back glass, include ignition and heating of back glass, measure pressure in a wire.
- In it there should be a pressure of the accumulator, otherwise malfunction in токоподводящем a wire or in the amplifier, outline damage.
- Disconnect bottom (thick white) a wire on the amplifier, measure pressure at the included ignition and heating of back glass:
- If there is a pressure of the accumulator токоподводящий the wire is perfectly in order, probably, the amplifier is faulty. If is not present, on the contrary.
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Dynamics in facing of a forward door
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Динамик the average frequencies, located below, also it is screwed behind on door facing. Figures from 1 to 3 designate fixing screws. |
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- Dismantle facing of a forward door.
- Cautiously remove being for door facing демпфирующую a film from polyfoam.
- Disconnect a wire socket in a connecting wire from bottom to top dynamics.
- Динамик average frequencies: ослабьте three fixing screws dynamics also take out directing wires.
- Динамик high frequencies: ослабьте the screw with a crosswise head behind on dynamics, remove динамик.
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Back динамик
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Back динамик it is screwed from above on body metal under a reception pocket (arrow). That it to dismantle, it is necessary to remove a back reception pocket in the beginning. |
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- Dismantle a back reception pocket (the head Salon).
- Loosen the screws with crosswise heads, remove динамик.
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