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SEAT LEON 2002 – 2.3 l/125 kW Motronic, engine code AQN, optimal equipment for Toledo . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2002 - Battery - starter - alternator - voltage regulator - ignition/starter switch - X-contact relief relay



Wiring Diagram  SEAT LEON 2002 - Battery - starter - alternator - voltage regulator - ignition/starter switch - X-contact relief relay https://portal-diagnostov.com/license.html
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ABattery (00532)
BStarter
CAlternator
C1Voltage regulator
DIgnition/starter switch
J59X-contact relief relay
S10Fuse in relay plate fuse holder
S162Fuse 1 (30) in fuse holder on battery
S163Fuse 2 (30) in fuse holder on battery
S176Fuse 4 (30) in fuse holder on battery
S177Fuse 5 (30) in fuse holder on battery
S229Fuse on fuse holder
T2k2-pin connector, on engine
T4l4-pin connector, on engine
T6l6-pin connector, brown, in connector protective housing, on left in plenum chamber
  500 Screw connection 1 (30), on relay plate
  501 Screw connection 2 (30), on relay plate
  502 Screw connection 1 (30a), on relay plate
  A2 Positive connection (15), in dash panel wiring harness
  A32 Positive connection (30), in dash panel wiring harness
  A41 Positive connection (50), in dash panel wiring harness
*only models with air conditioning system

Wiring Diagram SEAT LEON 2002 - Motronic control unit - ignition coil 1 with output stage - ignition coil 2 with output stage - ignition coil 3 with output stage - ignition coil 4 with output stage



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - ignition coil 1 with output stage - ignition coil 2 with output stage - ignition coil 3 with output stage - ignition coil 4 with output stage https://portal-diagnostov.com/license.html
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J220Motronic control unit
N70Ignition coil 1 with output stage
N127Ignition coil 2 with output stage
N291Ignition coil 3 with output stage
N292Ignition coil 4 with output stage
PSpark plug connector
QSpark plugs
T4o4-pin connector
T4q4-pin connector
T4v4-pin connector
T4w4-pin connector
T6l6-pin connector, brown, in connector protective housing, on left in plenum chamber
T14a14-pin connector, in left wiring harness
T121121-pin connector
  15 Earth point, on cylinder head
  85 Earth connection 1, in engine compartment wiring harness
  281 Earth connection 1, in engine wiring harness
  A104 Positive connection 2 (15), in dash panel wiring harness
  D10 Positive connection (30), in front right wiring harness
  D52 Positive connection (15a), in engine compartment wiring harness

Wiring Diagram SEAT LEON 2002 - Motronic control unit - engine temperature sender - oil level and oil temperature sender - ignition coil 5 with output stage



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - engine temperature sender - oil level and oil temperature sender - ignition coil 5 with output stage https://portal-diagnostov.com/license.html
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G27Engine temperature sender (01204)
G266Oil level and oil temperature sender (00562)
J220Motronic control unit
J293Radiator fan control unit (00831)
N323Ignition coil 5 with output stage
PSpark plug connector
QSpark plugs
V51Continued coolant circulation pump
T4y4-pin connector
T1414-pin connector
T14a14-pin connector, in left wiring harness
T121121-pin connector
  10 Earth point, in plenum chamber
  85 Earth connection 1, in engine compartment wiring harness
  281 Earth connection 1, in engine wiring harness
  D52 Positive connection (15a), in engine compartment wiring harness
*only models with extended servicing intervals

Wiring Diagram SEAT LEON 2002 - Motronic control unit - coolant temperature sender - knock sensor 1 - knock sensor 2



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - coolant temperature sender - knock sensor 1 - knock sensor 2 https://portal-diagnostov.com/license.html
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G2Coolant temperature display sender (01039)
G61Knock sensor 1 (00524-2142)
G62Coolant temperature display sender (00522-2312)
G66Knock sensor 2 (00540-2144)
J220Motronic control unit
T2r2-pin connector, on left of cylinder head
T3e3-pin connector, near intake manifold
T10d10-pin connector, green, in connector protective housing, on left in plenum chamber
T14a14-pin connector, in left wiring harness
T121121-pin connector
  139 Earth connection (sender earth), in Motronic wiring harness
  220 Earth connection (sender earth), in engine wiring harness
  241 Earth connection 2 engine earth, in engine wiring harness

Wiring Diagram SEAT LEON 2002 - Motronic control unit - throttle valve module - engine speed sender - throttle valve drive for electric throttle



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - throttle valve module - engine speed sender - throttle valve drive for electric throttle https://portal-diagnostov.com/license.html
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G28Engine speed sender (00513-2111)
G186Throttle valve drive (electric power control)
G187Throttle valve drive angle sender 1 for electric throttle
G188Throttle valve drive angle sender 2 for electric throttle
J220Motronic control unit
J293Radiator fan control unit (00831)
J338Throttle valve module (01165)
T3b3-pin connector, on radiator fan
T6n6-pin connector
T1010-pin connector, orange, in connector protective housing, on left in plenum chamber
T1414-pin connector
T121121-pin connector
  220 Earth connection (sender earth), in engine wiring harness
*only models with multifunction display

Wiring Diagram SEAT LEON 2002 - Motronic control unit - Hall sender - accelerator position sender - Hall sender 2 - accelerator position sender 2



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - Hall sender - accelerator position sender - Hall sender 2 - accelerator position sender 2 https://portal-diagnostov.com/license.html
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G40Hall sender (00515-2113)
G79Accelerator position sender (00777-3131)
G163Hall sender 2 (01122)
G185Accelerator position sender 2
J220Motronic control unit
J255Climatronic control unit (01320)
J293Radiator fan control unit (00831)
T6m6-pin connector, on accelerator
T1010-pin connector, orange, in connector protective housing, on left in plenum chamber
T10h10-pin connector, blue, in connector protective housing, on left in plenum chamber
T12e12-pin connector
T1414-pin connector
T16b16-pin connector
T121121-pin connector
  220 Earth connection (sender earth), in engine wiring harness
  D106 Connection 4, in engine compartment wiring harness

Wiring Diagram SEAT LEON 2002 - Motronic control unit - injector - cylinder 1 - injector - cylinder 2 - injector - cylinder 3 - injector - cylinder 4 - injector - cylinder 5



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - injector - cylinder 1 - injector - cylinder 2 - injector - cylinder 3 - injector - cylinder 4 - injector - cylinder 5 https://portal-diagnostov.com/license.html
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J220Motronic control unit
N30Injector for cylinders 1 (01249-4411)
N31Injector for cylinders 2 (01250-4412)
N32Injector for cylinders 3 (01251-4413)
N33Injector for cylinders 4 (01252-4414)
N83Injector for cylinders 5 (01253-4421)
S232Fuse on fuse holder
T1010-pin connector, orange, in connector protective housing, on left in plenum chamber
T10d10-pin connector, green, in connector protective housing, on left in plenum chamber
T14a14-pin connector, in left wiring harness
T121121-pin connector
  10 Earth point, in plenum chamber
  131 Earth connection 2, in engine compartment wiring harness
  B168 Connection (86), in interior wiring harness
  D95 Connection (injectors), in engine compartment wiring harness
*Wire W for self-diagnosis

Wiring Diagram SEAT LEON 2002 - Motronic control unit - lambda probe - lambda probe after catalytic converter - activated charcoal filter system solenoid valve 1 - lambda probe heater



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - lambda probe - lambda probe after catalytic converter - activated charcoal filter system solenoid valve 1 - lambda probe heater https://portal-diagnostov.com/license.html
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G39Lambda probe (00525-2342)
G130Lambda probe after catalytic converter (00699)
J220Motronic control unit
J299Secondary air pump relay (01264-4311)
N80Activated charcoal filter system solenoid valve 1 (pulsed) (01247-4343)
Z19Lambda probe heater
Z29Lambda probe 1 heater after catalytic converter
T4p4-pin connector, centre in engine compartment
T6q6-pin connector, on exhaust pipe
T121121-pin connector
  D108 Connection 6, in engine compartment wiring harness
  E7 Positive connection (87a), in Motronic wiring harness

Wiring Diagram SEAT LEON 2002 - Air mass meter - secondary air pump motor - Motronic control unit - secondary air inlet valve



Wiring Diagram  SEAT LEON 2002 - Air mass meter - secondary air pump motor - Motronic control unit - secondary air inlet valve https://portal-diagnostov.com/license.html
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G70Air mass meter
J104ABS control unit with EDL
J220Motronic control unit
N112Secondary air inlet valve
V101Secondary air pump motor
T10d10-pin connector, green, in connector protective housing, on left in plenum chamber
T2525-pin connector
T4747-pin connector
T121121-pin connector
  10 Earth point, in plenum chamber
  A121 Connection (high bus), in dash panel wiring harness
  A122 Connection (low bus), in dash panel wiring harness
  E30 Connection (87a), in engine wiring harness

Wiring Diagram SEAT LEON 2002 - Motronic control unit - electric fuel pump relay - charge pressure control solenoid valve - variable intake manifold change-over valve



Wiring Diagram  SEAT LEON 2002 - Motronic control unit - electric fuel pump relay - charge pressure control solenoid valve - variable intake manifold change-over valve https://portal-diagnostov.com/license.html
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F36Clutch pedal switch (00650)
J17Fuel pump relay (01259-4433)
J220Motronic control unit
J234Airbag control unit (01321)
N75Charge pressure control solenoid valve (01262-4442)
N156Variable intake manifold change-over valve (01243-4334)
N205Inlet camshaft control valve 1
T6l6-pin connector, brown, in connector protective housing, on left in plenum chamber
T1010-pin connector, orange, in connector protective housing, on left in plenum chamber
T10d10-pin connector, green, in connector protective housing, on left in plenum chamber
T7575-pin connector, behind centre console
T121121-pin connector
  A20 Connection (15a), in dash panel wiring harness
  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

Wiring Diagram SEAT LEON 2002 - Fuel gauge sender - fuel system pressurisation pump - coolant shortage indicator sender



Wiring Diagram  SEAT LEON 2002 - Fuel gauge sender - fuel system pressurisation pump - coolant shortage indicator sender https://portal-diagnostov.com/license.html
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GFuel gauge sender (00771-3113)
G6Fuel system pressurisation pump
G32Coolant shortage indicator sender
S228Fuse on fuse holder
S234Fuse on fuse holder
S243Fuse on fuse holder
T6l6-pin connector, brown, in connector protective housing, on left in plenum chamber
T14a14-pin connector, in left wiring harness
  81 Earth connection 1, in dash panel wiring harness
  269 Earth connection (sender earth) 1, in dash panel wiring harness
  504 Screw connection 1 (87F), on relay plate
  A99 Connection 1 (87), in dash panel wiring harness
  A100 Connection 2 (87), in dash panel wiring harness

Wiring Diagram SEAT LEON 2002 - Control unit with display in dash panel insert - oil pressure switch - speedometer sender - oil pressure warning buzzer - alternator warning lamp



Wiring Diagram  SEAT LEON 2002 - Control unit with display in dash panel insert - oil pressure switch - speedometer sender - oil pressure warning buzzer - alternator warning lamp https://portal-diagnostov.com/license.html
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F1Oil pressure switch
G22Speedometer
H11Oil pressure warning buzzer
J285Control unit with display in dash panel insert
K2Alternator warning lamp
K3Oil pressure warning lamp
K28Coolant temperature and coolant shortage warning lamp
K83Exhaust emissions warning lamp
K132Electric power control fault lamp
S7Fuse in relay plate fuse holder
T14a14-pin connector, in left wiring harness
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
  B163 Positive connection 1 (15), in interior wiring harness
*only models with multifunction display

Wiring Diagram SEAT LEON 2002 - Control unit with display in dash panel insert - multifunction display - multifunction display call-up button - multifunction display memory switch



Wiring Diagram  SEAT LEON 2002 - Control unit with display in dash panel insert - multifunction display - multifunction display call-up button - multifunction display memory switch https://portal-diagnostov.com/license.html
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E86Multifunction display call-up button
E109Multifunction display memory switch
G1Fuel gauge
G3Coolant temperature gauge
G5Rev. counter
G21Speedometer
J119Multifunction display
J285Control unit with display in dash panel insert
K105Reserve fuel warning lamp
T5d5-pin connector, brown, coupling station, C-pillar left
T6d6-pin connector
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
  A13 Connection (door contact switch), in dash panel wiring harness
  A27 Connection (speed signal), in dash panel wiring harness
*only models with multifunction display
**Wire W for self-diagnosis
***only models up to April 2001
---only models from May 2001