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Copyright VW AG
Current flow diagrams ElsaPro transaction no.: 33218
DMS order no.: undefined VIN: Model year: 2001Sales code: 8D2
Model description: Audi A4Engine code: ATJ Gearbox code:
EHWOfficial licence plate number: Final drive code: Username: Calin
Service advisor name: Calin, Murgu (RO101050.009)
Audi A4 Current Flow Diagram No. 21 / 1 Edition 03.2002
1.9 litre unit injector, TDI engine, 85 kW, 4-cylinder, engine
code AJM From model year 2000
1.9 litre unit injector, TDI engine, 85 kW, 4-cylinder, engine
code ATJ From model year 2000
Fuse box:
From fuse number 23 upwards the fuses in the fuse box are
designated as 223 etc. in the Current Flow Diagram.
Micro-central electrics:
Position of relays:2 - X contact relief relay4 - Relay for glow
plugs
Fuse colours:30 A - green25 A - white20 A - yellow15 A - blue10
A - red7.5 A - brown
Page 1 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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5 A - beige
3-point relay carrier:
Position of relays:1 - High heat output relay
2a - Low heat output relay **2b - Fuel cooling pump relay **3 -
Diesel direct injection system relay
Position of fuses:5 - Engine control unit fuse7 - Fuse for
coolant heater elements8 - Fuse 2 for coolant heater elements9 -
Fuse for glow plugs - engine
10 - Fuel cooling pump fuse *
13-point relay carrier:
Position of relays:10 - Fuel pump relay
Page 2 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 2
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Battery, starter, alternator, glow plugsA - BatteryB - StarterC
- AlternatorC1 - Voltage regulatorD - Ignition/starter switchE1 -
Lighting switchJ59 - X contact relief relayQ6 - Glow plugs -
(engine)S39 - Strip fuse for glow plugs -
(engine)T1k - Single connector, black, in
engine compartment, rightT2h - 2-pin connector, blue, in
engine
compartmentT2at - 2-pin connector, black, in
engine compartment, rightT10 - 10-pin connector, brown,
connector point, electronics box, plenum chamber
11 - Earth point, in battery box
81 - Earth connection -1-, in dash panel wiring harness
A86 - Connection (50a), in dash panel wiring harness
D16 - Connection (glow plugs), in front right wiring harness
* - Applicable up to model year 2000
** - Applicable from model year 2001
Page 3 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 3
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Diesel direct injection system control unit, fuel temperature
sender, relay for glow plugs, diesel direct injection system
relayG81 - Fuel temperature senderJ52 - Glow plug relayJ248 -
Diesel direct injection system
control unitJ317 - Terminal 30 voltage supply
relayS102 - Engine control unit fuseT3aa - 3-pin connector,
white,
connector point, electronics box, plenum chamber
T3au - 3-pin connector, red, connector point, electronics box,
plenum chamber
T10m - 10-pin connector, black, connector point, electronics
box, plenum chamber
T10ar - 10-pin connector, orange, connector point, electronics
box, plenum chamber
12 - Earth point, in engine compartment, left
156 - Earth connection, in diesel direct injection wiring
harness
A40 - Positive (+) connection -1- (30), in dash panel wiring
harness
D50 - Positive (+) connection (30), in engine compartment wiring
harness
D101 - Connection -1-, in engine compartment wiring harness
Page 4 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 4
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Diesel direct injection system control unit, accelerator pedal
position senderE87 - Control and display unit for air
conditioner/ClimatronicF8 - Kick-down switchF60 - Idling
switchG79 - Accelerator pedal position
senderJ248 - Diesel direct injection system
control unitT6as - 6-pin connector, black, near
accelerator pedal position sender
T15 - 15-pin connector, white, connector point, electronics box,
plenum chamber
T15m - 15-pin connector, red, connector point, electronics box,
plenum chamber
A34 - Connection (75x), in dash panel wiring harness
A100 - Connection -2- (87), in dash panel wiring harness
A105 - Connection -2- (rpm boost), in dash panel wiring
harness
A121 - Connection (high bus), in dash panel wiring harness
A122 - Connection (low bus), in dash panel wiring harness
* - Only models with air conditioner** - Applicable up to model
year
2000*** - Applicable from model year
2001 (phased-in modification)**** - Only models with
automatic
gearbox - CAN bus (data wire)
Page 5 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 5
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Diesel direct injection system control unit, intake manifold
pressure sender, intake manifold temperature sender, cruise control
system switch, exhaust gas recirculation valve, charge pressure
control solenoid valveE45 - Cruise control system switchF - Brake
light switchF36 - Clutch pedal switchG71 - Intake manifold
pressure
senderG72 - Intake manifold temperature
senderJ138 - Radiator fan run-on control unitJ248 - Diesel
direct injection system
control unitM9 - Brake light bulb, leftM10 - Brake light bulb,
rightN18 - Exhaust gas recirculation valveN75 - Charge pressure
control
solenoid valveT6y - 6-pin connector, black, next to
steering columnT10p - 10-pin connector, grey, left
connector point, A pillarT10ar - 10-pin connector, orange,
connector point, electronics box, plenum chamber
T15 - 15-pin connector, white, connector point, electronics box,
plenum chamber
T17a - 17-pin connector, brown, left connector point, A
pillar
A18 - Connection (54), in dash panel wiring harness
A71 - Connection (86), in dash panel wiring harness
D103 - Connection -3-, in engine compartment wiring harness
* - Only models with cruise control system
** - Does not apply to automatic gearbox
*** - Applicable up to August 2000**** - Applicable from
September
2000 onwards
Page 6 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 6
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Diesel direct injection system control unit, Hall sender for
camshaft position, throttle butterfly valve, fuel cooling pump,
unit injector solenoid valve - No. 1, 2, 3 and 4 cylinderG40 - Hall
sender for camshaft
positionJ248 - Diesel direct injection system
control unitJ445 - Fuel cooling pump relayN211 - Throttle
butterfly valveN240 - Unit injector solenoid valve, No.
1 cylinderN241 - Unit injector solenoid valve, No.
2 cylinderN242 - Unit injector solenoid valve, No.
3 cylinderN243 - Unit injector solenoid valve, No.
4 cylinderS262 - Fuse for fuel coolingT8d - 8-pin connector, in
engine
compartmentT10m - 10-pin connector, black,
connector point, electronics box, plenum chamber
V166 - Fuel cooling pump
156 - Earth connection, in diesel direct injection wiring
harness
A45 - Connection (speed signal), in dash panel wiring
harness
D103 - Connection -3-, in engine compartment wiring harness
Page 7 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 7
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Diesel direct injection system control unit, coolant temperature
senders, engine speed sender, air mass meterG2 - Coolant
temperature senderG28 - Engine speed senderG62 - Coolant
temperature senderG70 - Air mass meterJ234 - Airbag control
unitJ248 - Diesel direct injection system
control unitT3m - 3-pin connector, grey, in engine
compartment, leftT3au - 3-pin connector, red, connector
point, electronics box, plenum chamber
T10 - 10-pin connector, brown, connector point, electronics box,
plenum chamber
T10ar - 10-pin connector, orange, connector point, electronics
box, plenum chamber
A27 - Connection (speed signal), in dash panel wiring
harness
A125 - Connection (crash signal), in dash panel wiring
harness
D102 - Connection -2-, in engine compartment wiring harness
F27 - Connection (screening), in diesel direct injection wiring
harness
* - Applicable up to model year 2000
** - Applicable from model year 2001
Page 8 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 8
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Fuel pump relay, diesel direct injection system control unit,
coolant heater elements, relay for coolant heater elementsJ17 -
Fuel pump relayJ248 - Diesel direct injection system
control unitJ359 - Low heat output relayJ360 - High heat output
relayQ7 - Coolant heating elementsS5 - Fuse in fuse box/relay
plateS13 - Fuse in fuse box/relay plateS109 - Coolant heater
elements fuseS143 - Coolant heater elements fuse 2S228 - Fuse in
fuse boxS231 - Fuse in fuse boxT10ar - 10-pin connector,
orange,
connector point, electronics box, plenum chamber
A2 - Positive (+) connection (15), in dash panel wiring
harness
A32 - Positive (+) connection (30), in dash panel wiring
harness
A70 - Connection (15a, fuse 231), in dash panel wiring
harness
A99 - Connection -1- (87), in dash panel wiring harness
* - Does not apply to automatic gearbox
Page 9 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 9
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Dash panel insert, coolant shortage indicator switch, fuel gauge
sender, fuel pump, diagnostic connectorF66 - Coolant shortage
indicator
switchG - Fuel gauge senderG6 - Fuel pumpJ218 - Combi-processor
in dash panel
insertT6e - 6-pin connector, blue, left
connector point, A pillarT10a - 10-pin connector, brown,
left
connector point, A pillarT10m - 10-pin connector, black,
connector point, electronics box, plenum chamber
T10ao - 10-pin connector, white, left connector point, A
pillar
T16 - 16-pin connector, diagnostic connector
T32 - 32-pin connector, blue, on dash panel insert
T32a - 32-pin connector, green, on dash panel insert
86 - Earth connection -1-, in rear wiring harness
139 - Earth connection (sender earth), in Motronic wiring
harness
269 - Earth connection (sender earth) -1-, in dash panel wiring
harness
A76 - Connection (diagnosis wire K), in dash panel wiring
harness
* - Applicable up to model year 2000
** - Applicable from model year 2001
*** - Output for signal earth
Page 10 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
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Audi A4 Current Flow Diagram No. 21 / 10
ws = whitesw = blackro = redrt = redbr = browngn = greenbl =
bluegr = greyli = purplevi = purplege = yellowor = orangers =
rosa
Dash panel insert, warning lamps, speedometer sender, oil
pressure switch, oil level/oil temperature senderF1 - Oil pressure
switchG22 - Speedometer senderG266 - Oil level/oil temperature
senderJ218 - Combi-processor in dash panel
insertK2 - Alternator warning lampK29 - Glow period warning
lampT10 - 10-pin connector, brown,
connector point, electronics box, plenum chamber
T10m - 10-pin connector, black, connector point, electronics
box, plenum chamber
T32 - 32-pin connector, blue, on dash panel insert
T32a - 32-pin connector, green, on dash panel insert
156 - Earth connection, in diesel direct injection wiring
harness
A17 - Connection (61), in dash panel wiring harness
A74 - Connection (15a, fuse 5), in dash panel wiring harness
* - Applicable up to model year 2000
** - Applicable from model year 2001
Page 11 of 111.9 litre unit injector, TDI engine, 85 kW,
4-cylinder, engine code AJM
19.02.2013https://portal.cpn.vwg/elsapro/elsaweb/ctr/WDshowContent/document/431955