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AUDI A4 2002 – 1.9 litre unit injector, TDI engine, 85 kW, 4-cylinder, engine code ATJ . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2002 - Battery - starter - alternator - glow plugs



Wiring Diagram  AUDI A4 2002 - Battery - starter - alternator - glow plugs https://portal-diagnostov.com/license.html
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ABattery
BStarter
CAlternator
C1Voltage regulator
DIgnition/starter switch
E1Lighting switch
J59X contact relief relay
Q6Glow plugs - (engine)
S39Strip fuse for glow plugs - (engine)
T1kSingle connector, black, in engine compartment, right
T2h2-pin connector, blue, in engine compartment
T2at2-pin connector, black, in engine compartment, right
T1010-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

Wiring Diagram AUDI A4 2002 - Diesel direct injection system control unit - fuel temperature sender - relay for glow plugs - diesel direct injection system relay



Wiring Diagram  AUDI A4 2002 - Diesel direct injection system control unit - fuel temperature sender - relay for glow plugs - diesel direct injection system relay https://portal-diagnostov.com/license.html
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G81Fuel temperature sender
J52Glow plug relay
J248Diesel direct injection system control unit
J317Terminal 30 voltage supply relay
S102Engine control unit fuse
T3aa3-pin connector, white, connector point, electronics box, plenum chamber
T3au3-pin connector, red, connector point, electronics box, plenum chamber
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T10ar10-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

Wiring Diagram AUDI A4 2002 - Diesel direct injection system control unit - accelerator pedal position sender



Wiring Diagram  AUDI A4 2002 - Diesel direct injection system control unit - accelerator pedal position sender https://portal-diagnostov.com/license.html
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E87Control and display unit for air conditioner/Climatronic
F8Kick-down switch
F60Idling switch
G79Accelerator pedal position sender
J248Diesel direct injection system control unit
T6as6-pin connector, black, near accelerator pedal position sender
T1515-pin connector, white, connector point, electronics box, plenum chamber
T15m15-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)

Wiring Diagram AUDI A4 2002 - 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 valve



Wiring Diagram  AUDI A4 2002 - 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 valve https://portal-diagnostov.com/license.html
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E45Cruise control system switch
FBrake light switch
F36Clutch pedal switch
G71Intake manifold pressure sender
G72Intake manifold temperature sender
J138Radiator fan run-on control unit
J248Diesel direct injection system control unit
M9Brake light bulb, left
M10Brake light bulb, right
N18Exhaust gas recirculation valve
N75Charge pressure control solenoid valve
T6y6-pin connector, black, next to steering column
T10p10-pin connector, grey, left connector point, A pillar
T10ar10-pin connector, orange, connector point, electronics box, plenum chamber
T1515-pin connector, white, connector point, electronics box, plenum chamber
T17a17-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

Wiring Diagram AUDI A4 2002 - 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 cylinder



Wiring Diagram  AUDI A4 2002 - 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 cylinder https://portal-diagnostov.com/license.html
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G40Hall sender for camshaft position
J248Diesel direct injection system control unit
J445Fuel cooling pump relay
N211Throttle butterfly valve
N240Unit injector solenoid valve, No. 1 cylinder
N241Unit injector solenoid valve, No. 2 cylinder
N242Unit injector solenoid valve, No. 3 cylinder
N243Unit injector solenoid valve, No. 4 cylinder
S262Fuse for fuel cooling
T8d8-pin connector, in engine compartment
T10m10-pin connector, black, connector point, electronics box, plenum chamber
V166Fuel 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

Wiring Diagram AUDI A4 2002 - Diesel direct injection system control unit - coolant temperature senders - engine speed sender - air mass meter



Wiring Diagram  AUDI A4 2002 - Diesel direct injection system control unit - coolant temperature senders - engine speed sender - air mass meter https://portal-diagnostov.com/license.html
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G2Coolant temperature sender
G28Engine speed sender
G62Coolant temperature sender
G70Air mass meter
J234Airbag control unit
J248Diesel direct injection system control unit
T3m3-pin connector, grey, in engine compartment, left
T3au3-pin connector, red, connector point, electronics box, plenum chamber
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10ar10-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

Wiring Diagram AUDI A4 2002 - Fuel pump relay - diesel direct injection system control unit - coolant heater elements - relay for coolant heater elements



Wiring Diagram  AUDI A4 2002 - Fuel pump relay - diesel direct injection system control unit - coolant heater elements - relay for coolant heater elements https://portal-diagnostov.com/license.html
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J17Fuel pump relay
J248Diesel direct injection system control unit
J359Low heat output relay
J360High heat output relay
Q7Coolant heating elements
S5Fuse in fuse box/relay plate
S13Fuse in fuse box/relay plate
S109Coolant heater elements fuse
S143Coolant heater elements fuse 2
S228Fuse in fuse box
S231Fuse in fuse box
T10ar10-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

Wiring Diagram AUDI A4 2002 - Dash panel insert - coolant shortage indicator switch - fuel gauge sender - fuel pump - diagnostic connector



Wiring Diagram  AUDI A4 2002 - Dash panel insert - coolant shortage indicator switch - fuel gauge sender - fuel pump - diagnostic connector https://portal-diagnostov.com/license.html
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F66Coolant shortage indicator switch
GFuel gauge sender
G6Fuel pump
J218Combi-processor in dash panel insert
T6e6-pin connector, blue, left connector point, A pillar
T10a10-pin connector, brown, left connector point, A pillar
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T10ao10-pin connector, white, left connector point, A pillar
T1616-pin connector, diagnostic connector
T3232-pin connector, blue, on dash panel insert
T32a32-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

Wiring Diagram AUDI A4 2002 - Dash panel insert - warning lamps - speedometer sender - oil pressure switch - oil level/oil temperature sender



Wiring Diagram  AUDI A4 2002 - Dash panel insert - warning lamps - speedometer sender - oil pressure switch - oil level/oil temperature sender https://portal-diagnostov.com/license.html
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F1Oil pressure switch
G22Speedometer sender
G266Oil level/oil temperature sender
J218Combi-processor in dash panel insert
K2Alternator warning lamp
K29Glow period warning lamp
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T3232-pin connector, blue, on dash panel insert
T32a32-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