Current flow diagram VAG - general information

Условные обозначения для новых электросхем VAG. Названия сигналов в электросхемах с 2017 года выпуска, цветовая маркировка проводов и их сечение, цвета предохранителей различных типов.

Signal names, from 2017
Note: These signal names will be used from 2017. You will find the old terminal designations in the chapters Signal names - DIN standard 72552 and Signal names - supplement

Terminal 1 - Ignition coil, ignition distributor – low voltage
Terminal 1a - To ignition contact breaker I (ignition distributor with two separate circuits)
Terminal 1b - To ignition contact breaker II (ignition distributor with two separate circuits)
Terminal 4 - Ignition coil, ignition distributor – high voltage
Terminal 4a - From ignition coil I (ignition distributor with two separate circuits)
Terminal 4b - From ignition coil II (ignition distributor with two separate circuits)
Terminal 15 - Switched positive to battery (output of ignition/driving switch)
Terminal 15a - Output on ballast resistor to ignition coil and starter
Terminal 17 - Glow plug and starter switch – start
Terminal 19 - Glow plug and starter switch – preglow
Terminal 30 - Input from positive terminal (+) on battery, series/parallel switch-over relay 12/24 V, direct
Terminal 30a - Input from positive terminal (+) on battery II
Terminal 31 - Negative battery terminal or earth, direct
Terminal 31a - Return wire to negative terminal on battery II (series/parallel switch-over relay 12/24 V)
Terminal 31b - Return wire to negative terminal on battery or earth via switch or relay (switched negative)
Terminal 31c - Return wire to negative terminal on battery I (series/parallel switch-over relay 12/24 V)
Terminal 50 - Starter control (direct)

Electric motors
Terminal 32 - Return wire
Terminal 33 - Main connection
Terminal 33a - Limit switch-off
Terminal 33b - Shunt field
Terminal 33f - For second, lower speed range
Terminal 33g - For third, lower speed range
Terminal 33h - For fourth, lower speed range
Terminal 33L - Anticlockwise rotation
Terminal 33R - Clockwise rotation

Starter
Terminal 45 - Separate starting relay, output; starter, input (primary current); two starters – parallel operation C – starting relay for engagement current
Terminal 45a - Output, starter I, input, starter I and II
Terminal 45b - Output, starter II
Terminal 48 - Terminal on starter and start repeating relay for monitoring starting procedure

Turn signal (indicator relay)
Terminal 49 - Input
Terminal 49a - Output
Terminal 49b - Output, second circuit
Terminal 49c - Output, third circuit

Starter control
Terminal 50 - Starter control (direct)
Terminal 50a - Switch-over relay – output for starter control
Terminal 50b - Starting relay for sequential control of the engagement current during parallel operation of two starters
Terminal 50c - Input on starting relay for starter I
Terminal 50d - Input on starting relay for starter II
Terminal 50e - Input starter inhibitor relay
Terminal 50f - Output starter inhibitor relay
Terminal 50g - Input start repeating relay
Terminal 50h - Output start repeating relay

Wiper motors
Terminal 53 - Wiper motor, input (+)
Terminal 53a - Wipers (+), limit switch-off
Terminal 53b - Wipers (shunt winding)
Terminal 53c - Electric pump for windscreen washer
Terminal 53e - Wipers (brake winding)
Terminal 53l - Wiper motor with permanent magnet and third brush (high speed)

Illumination
Terminal 55 - Fog lights
Terminal 56 - Headlights
Terminal 56a - Main beam and main beam warning lamp
Terminal 56b - Dipped beam
Terminal 56d - Headlight flasher
Terminal 57a - Parking light
Terminal 57L - Left parking light
Terminal 57R - Right parking light
Terminal 58 - Side lights, number plate lights, instrument lighting, tail lights
Terminal 58b - Brightness control
Terminal 58d - Brightness control
Terminal 58L - Left number plate light
Terminal 58R - Right number plate light

Alternators and voltage regulators
Terminal 61 - Alternator charging light
Terminal B+ - Battery positive
Terminal B- - Battery negative
Terminal D+ - Dynamo positive
Terminal D- - Dynamo negative
Terminal DF - Dynamo field winding, terminal DF1 dynamo field winding 1
Terminal DF2 - Dynamo field winding 2
Terminal U, terminal V, terminal W - Three-phase terminals
Terminal 75 - Radio, cigarette lighter
Terminal 76 - Loudspeakers

Switches
Break contacts (NC) and changeover contacts
Terminal 81 - Input
Terminal 81a - Output 1, break contact side
Terminal 81b - Output 2, break contact side
Multiple position switch
Terminal 83 - Input
Terminal 83a - Output, position 1
Terminal 83b - Output, position 2
Terminal 83L - Output, position left
Terminal 83R - Output, position right

Relays/current relays
Terminal 84 - Input, drive and relay contact
Terminal 84a - Output, drive
Terminal 84b - Output, relay contact

Alternators and voltage regulators
Terminal 85 - Output, drive (end of winding, negative or earth)
Terminal 86 - Input, drive (start of winding)
Terminal 86a - Start of winding or first winding
Terminal 86b - Winding tap or second winding

Relay contact for break contact (NC) and changeover contact
Terminal 87 - Input Also used for engine/motor current supply
Terminal 87a - Output 1 (break contact side)
Terminal 87b - Output 2, 87c Output 3
Terminal 87z - Input 1
Terminal 87y - Input 2
Terminal 87x - Input 3

Relay contact for make contact and changeover contact
Terminal 88 - Input
Terminal 88a - Output 1
Terminal 88b - Output 2
Terminal 88c - Output 3
Terminal 88z - Input 1
Terminal 88y - Input 2
Terminal 88x - Input 3

Turn signal (indicator relay)
Terminal C - Indicator lamp 1
Terminal C2 - Indicator lamp 2
Terminal C0 - Main connection for check circuits made by turn signal switch and broken by turn signal
Terminal C3 - Indicator lamp 3 (e.g. for second trailer)
Terminal L - Left turn signals
Terminal R - Right turn signals

Signal names - supplement
If no suitable DIN standard code is available, terminal designations will be written in English, for example:
CAN_H/CAN_L - Wires for CAN bus High and Low
FlexRay +/FlexRay - - FlexRay data bus
+V - Output supply voltage from electronic control unit
0V - Reference voltage from electronic control unit (not connected to body earth, terminal 31)
Signal - data wire

Wires
Wire cross-section
Note: Only for markets where AWG (American Wire Gauge) measurements are used.

Fuse colours
Fuse colours for mini type