Connection diagram of tempostat components
- 1 - Gas pedal
- 2 - Throttle control
- 3 - T-fitting
- 4 - Tempostat control module (J213)
- 5 - Relay mounting block
- 6 - Wiring harness
- 7 - Switch for controlling the operation of the tempostat (E45)
- 8 - Vacuum pump of the tempostat (V18)
- 9 - Vacuum hose
- 10 - Sensor-switch of the clutch vacuum vent valve (F36)
- C - clutch pedal position sensor-switch
Only models with manual transmission
- 11 - Sensor-switch of the brake ventilation vacuum valve (F47)
Refer to the illustration and circuit diagram of the tempostat electrical equipment.
The wiring diagrams below are drawn up according to the schematic principle, when the components of each circuit are connected to each other along the shortest path, without taking into account the shape of the wiring around the components and bundles located along the route.
On Audi A3 cars, a single-wire circuit for switching on electrical equipment is used. Consumers are connected to the plus of the power sources by a wire, and to the minus - through the car body or to ground. This method allows you to reduce the number of wires and simplify their installation. Ground connection of power sources reduces electrochemical corrosion of metal parts of the body. In some cases, a direct connection of the electrical consumer to the ground is not enough, and the consumer is connected to the ground with an additional wire, usually brown.
The supply voltage to most consumers is supplied through the ignition switch. The power circuits of those electrical equipment components, the operation of which may be required in any circumstances, are always connected to the battery, regardless of the position of the key in the ignition switch.
To connect the wires, electrical connectors with flat contacts are used.
For normal power supply to consumers, the electrical circuit must be closed, since otherwise an electric current will be present in it, for example, if a positive voltage is applied to the wiper motor, it will not work until its electrical circuit is connected to ground. Switches, relays, fuses, measuring devices, electric motors and other consumers of electricity can be connected to the electrical circuit. For the correct connection of electricity consumers, the contacts of the electrical connectors are marked accordingly. The connection to the vehicle ground is carried out either directly through the housing of the consumer of electricity or by an additional wire.
Contact 30
Positive battery voltage is always present on this pin. Wires connected to this pin are red or red with a stripe.
Contact 31
The contact is connected to the vehicle ground with a brown wire.
Contact 15
This pin is positive when the ignition is turned on. Wires connected to this pin are green or green with a stripe.
Contact X
The contact is energized after the ignition is turned on, but when the starter is turned on, the voltage is turned off. This makes it possible, when starting the engine, to turn off consumers of electricity that are unnecessary at that moment. The high beam headlights are also powered by this contact, so when the high beam is on and the ignition is turned off, it automatically switches to the parking lights.
Wire colors are indicated by Latin letters.
If there are several letters in the designation of the wire color, separated by the sign /, then the left group of letters indicates the main color of the wire, and the right group indicates the color of the strip.
bl | Blue
|
br | Brown
|
el | Cream
|
ge | Yellow
|
gn | Green
|
gr | Grey
|
hbl | Blue
|
hgn | Salad
|
li | purple
|
nf | Transparent
|
og | Orange
|
rbr | burgundy
|
ro, rt | Red
|
rs | Pink
|
sw | Black
|
vi | Violet
|
ws |
White |
In the diagram, all current consumers and switches are shown in the neutral position.
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