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SEAT LEON 2001 – 2.3 l – Motronic/125 kW, engine code letters AQN, Engine type exclusively for Toledo . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2001 - Battery - starter - alternator - voltage regulator - ignition/starter switch - X contact relief relay



Wiring Diagram  SEAT LEON 2001 - 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
S10Fuses in fuse box/relay plate
S162Fuse -1- (30) in fuse box/battery
S163Fuse -2- (30) in fuse box/battery
S176Fuse -4- (30) in fuse box/battery
S177Fuse -5- (30) in fuse box/battery
S229Fuse in fuse box
T2k2-pin connector, on engine
T4l4-pin connector, on engine
T6l6-pin connector, brown, on connector protective housing, on plenum chamber, left side
  500 Bolted connection -1- (30), in relay plate
  501 Bolted connection -2- (30), in relay plate
  502 Bolted connection -1- (30a), in 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
*Vehicles with air conditioner only

Wiring Diagram SEAT LEON 2001 - 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 2001 - 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
QFlame plugs
T4o4-pin connector
T4q4-pin connector
T4v4-pin connector
T4w4-pin connector
T6l6-pin connector, brown, on connector protective housing, on plenum chamber, left side
T14a14-pin connector, in wiring channel, left side
T121121-pin connector
  15 Earth point, on cylinder head
  85 Earth connection -1-, in engine compartment wiring harness
  281 Earth connection -1-, in engine pre-wiring wiring harness
  A104 Positive connection -2- (15), in dash panel wiring harness
  D52 Positive connection (15a), in engine compartment wiring harness

Wiring Diagram SEAT LEON 2001 - Motronic control unit - coolant temperature sender - knock sensor I - ignition coil 5 with output stage



Wiring Diagram  SEAT LEON 2001 - Motronic control unit - coolant temperature sender - knock sensor I - ignition coil 5 with output stage https://portal-diagnostov.com/license.html
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G2Coolant temperature sender (01039)
G61Knock sensor I (00524-2142)
G62Coolant temperature sender (00522-2312)
J220Motronic control unit
N323Ignition coil 5 with output stage
PSpark plug connector
QFlame plugs
T3e3-pin connector, near intake manifold
T4y4-pin connector
T10d10-pin connector, green, on connector protective housing, on plenum chamber, left side
T14a14-pin connector, in wiring channel, left side
T121121-pin connector
  85 Earth connection -1-, in engine compartment wiring harness
  139 Earth connection (sender earth), in Motronic wiring harness
  220 Earth connection (sender earth), in engine wiring harness
  281 Earth connection -1-, in engine pre-wiring wiring harness
  D52 Positive connection (15a), in engine compartment wiring harness

Wiring Diagram SEAT LEON 2001 - Motronic control unit - throttle valve control unit - engine revs sender - throttle valve drive (electric accelerator operation) - knock sensor II



Wiring Diagram  SEAT LEON 2001 - Motronic control unit - throttle valve control unit - engine revs sender - throttle valve drive (electric accelerator operation) - knock sensor II https://portal-diagnostov.com/license.html
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G28Engine revs sender (00513-2111)
G66Knock sensor II (00540-2144)
G186Throttle valve drive (electric accelerator operation)
G187Throttle valve drive angle sender -1- (electric accelerator operation)
G188Throttle valve drive angle sender -2- (electric accelerator operation)
J220Motronic control unit
J293Radiator fan control unit (00831)
J338Throttle valve control unit (01165)
T2r2-pin connector, on cylinder head, left side
T3b3-pin connector, on radiator
T6n6-pin connector
T1010-pin connector, orange, on connector protective housing, on plenum chamber, left side
T1414-pin connector
T121121-pin connector
  139 Earth connection (sender earth), in Motronic wiring harness
  220 Earth connection (sender earth), in engine wiring harness

Wiring Diagram SEAT LEON 2001 - Motronic control unit - power steering pressure switch - accelerator position sender - accelerator pedal position sender -2- - hall sender - hall sender 2



Wiring Diagram  SEAT LEON 2001 - Motronic control unit - power steering pressure switch - accelerator position sender - accelerator pedal position sender -2- - hall sender - hall sender 2 https://portal-diagnostov.com/license.html
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F88Power steering pressure switch (00557)
G40Hall sender (00515-2113)
G79Accelerator position sender (00777-3131)
G163Hall sender 2 (01122)
G185Accelerator pedal position sender -2-
J220Motronic control unit
J255Climatronic control unit (01320)
J293Radiator fan control unit (00831)
T6m6-pin connector, on accelerator pedal
T1010-pin connector, orange, on connector protective housing, on plenum chamber, left side
T10h10-pin connector, blue, on connector protective housing, on plenum chamber, left side
T12e12-pin connector
T1414-pin connector
T16b16-pin connector
T121121-pin connector
  220 Earth connection (electronic earth), in engine wiring harness
  D106 Connection -4-, in engine compartment wiring harness

Wiring Diagram SEAT LEON 2001 - Motronic control unit - injector cylinder 1 - injector cylinder 2 - injector cylinder 3 - injector cylinder 4 - injector cylinder 5



Wiring Diagram  SEAT LEON 2001 - 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 cylinder 1 (01249-4411)
N31Injector cylinder 2 (01250-4412)
N32Injector cylinder 3 (01251-4413)
N33Injector cylinder 4 (01252-4414)
N83Injector cylinder 5 (01253-4421)
S232Fuse in fuse holder
T1010-pin connector, orange, in the connec. protective housing, in the plenum chamber, left side
T10d10-pin connector, green, in the connec. protective housing, in the plenum chamber, left side
T14a14-pin connector, in the wire channel, left side
T121121-pin connector
  10 Earth point, in plenum chamber
  131 Earth connection -2-, in engine compartment wiring harness
  D95 Connection (injectors), in engine compartment wiring harness
*Self-diagnosis line W

Wiring Diagram SEAT LEON 2001 - Motronic control unit - lambda probe - lambda probe after catalyst - activated charcoal filter system solenoid valve 1 - lambda probe heater



Wiring Diagram  SEAT LEON 2001 - Motronic control unit - lambda probe - lambda probe after catalyst - 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 catalyst (00699)
J220Motronic control unit
J299Secondary air pump relay (01264-4311)
N80Activated charcoal filter system solenoid valve I (01247-4343) (pulsed)
T4p4-pin connector, in the engine compartment, centre
T6q6-pin connector, in the exhaust pipe
T121121-pin connector
Z19Lambda probe heater
Z29Lambda probe 1 heater, after catalyst
  D108 Connection -6-, in engine compartment wiring harness
  E7 Positive connection (87a), in Motronic wiring harness

Wiring Diagram SEAT LEON 2001 - Motronic control unit - air mass meter - secondary air pump motor - secondary air injection valve



Wiring Diagram  SEAT LEON 2001 - Motronic control unit - air mass meter - secondary air pump motor - secondary air injection valve https://portal-diagnostov.com/license.html
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G70Air mass meter (00553-2324)
J104ABS with EDL control unit
J220Motronic control unit
N112Secondary air injection valve (01235-4313)
V101Secondary air pump motor
T10d10-pin connector, green, on connector protective housing, on plenum chamber, left side
T2525-pin connector
T4747-pin connector
T121121-pin connector
  131 Earth connection -2-, in engine compartment wiring harness
  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 2001 - Motronic control unit - charge pressure control solenoid valve - camshaft control valve -1- - intake manifold change-over valve - engine temperature sender



Wiring Diagram  SEAT LEON 2001 - Motronic control unit - charge pressure control solenoid valve - camshaft control valve -1- - intake manifold change-over valve - engine temperature sender https://portal-diagnostov.com/license.html
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G27Engine temperature sender (01204)
J17Fuel pump relay (01259-4433)
J220Motronic control unit
J234Airbag control unit (01321)
N75Charge pressure control solenoid valve (01262-4442)
N156Intake manifold change-over valve (01243-4334)
N205Camshaft control valve -1-
T6l6-pin connector, brown, on connector protective housing, on plenum chamber, left side
T1010-pin connector, orange, on connector protective housing, on plenum chamber, left side
T7575-pin connector, behind central console
T121121-pin connector
  85 Earth connection -1-, in engine compartment 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 2001 - Fuel gauge sender - fuel pump (pre-supply pump) - coolant shortage indicator sender



Wiring Diagram  SEAT LEON 2001 - Fuel gauge sender - fuel pump (pre-supply pump) - coolant shortage indicator sender https://portal-diagnostov.com/license.html
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GFuel gauge sender (00771-3113)
G6Fuel pump (pre-supply pump)
G32Coolant shortage indicator sender
S228Fuse in fuse box
S234Fuse in fuse box
S243Fuse in fuse box
T6l6-pin connector, brown, on connector protective housing, on plenum chamber, left side
T14a14-pin connector, in wiring channel, left side
  135 Earth connection -2-, in dash panel wiring harness
  269 Earth connection (electronic earth) -1-, in dash panel wiring harness
  504 Bolted connection -1- (87F), in relay plate
  A99 Connection -1- (87), in dash panel wiring harness
  A100 Connection -2- (87), in dash panel wiring harness

Wiring Diagram SEAT LEON 2001 - Control unit with display in dash panel insert - oil pressure switch - speedometer sender - oil pressure warning buzzer - alternator warning lamp



Wiring Diagram  SEAT LEON 2001 - 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 sender (01086)
H11Oil pressure warning buzzer
J285Control unit with display in dash panel insert (01317)
K2Alternator warning lamp
K3Oil pressure warning lamp (00755)
K28Coolant temperature/coolant shortage warning lamp
K83Exhaust emissions warning lamp
K132Electronic accelerator drive warning lamp
S7Fuses in fuse box/relay plate
T14a14-pin connector, in wiring channel, left side
T3232-pin connector, blue, in dash panel insert
T32a32-pin connector, green, in dash panel insert
  10 Earth point, in plenum chamber
  85 Earth connection -1-, in engine compartment wiring harness
  B163 Positive connection -1- (15), in interior wiring harness

Wiring Diagram SEAT LEON 2001 - Control unit with display in dash panel insert - multi-function display - multi-function display call-up button - multi-function display memory switch



Wiring Diagram  SEAT LEON 2001 - Control unit with display in dash panel insert - multi-function display - multi-function display call-up button - multi-function display memory switch https://portal-diagnostov.com/license.html
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E86Multi-function display call-up button
E109Multi-function display memory switch
G1Fuel gauge (00664)
G3Coolant temperature gauge
G5Revs counter (00662)
G21Speedometer (00663)
J119Multi-function display
J285Control unit with display in dash panel insert (01317)
K105Fuel level warning lamp (01082)
T6d6-pin connector
T3232-pin connector, blue, in dash panel insert
T32a32-pin connector, green, in dash panel insert
  A13 Connection (door contact switch) in dash panel wiring harness
  A27 Connection (speed signal) in dash panel wiring harness
*Vehicles with MFI only
**Self-diagnosis W line