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SEAT LEON 2011 — Auxiliary heater . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT LEON 2011 - Auxiliary air heater element - high heat output relay - low heat output relay - diesel direct injection system control unit



Wiring Diagram  SEAT LEON 2011 - Auxiliary air heater element - high heat output relay - low heat output relay - diesel direct injection system control unit https://portal-diagnostov.com/license.html
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ABattery
E16Heater/heat output switch
J248Diesel direct injection system control unit, in centre plenum chamber
J317Terminal 30 voltage supply relay, on electronics box, on left in engine compartment (100)
J359Low heat output relay, on relay carrier on left of dash panel (373)
J360High heat output relay, on relay carrier on left of dash panel (370)
J519Onboard supply control unit
Z35Auxiliary heater element
  44 Earth point, lower part of left A-pillar
  507 Screw connection (30), on fuse holder on battery
  A176 Connection (auxiliary heater), in dash panel wiring harness
  D183 Connection 4 (87a), in engine compartment wiring harness
*only models without air conditioning system or Climatronic


SEAT LEON 2011



SEAT LEON 2011 Control units overview

Control units overview
   
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1 -  ABS control unit with EDL -J104-
q   Location → page 804/4
q   26-pin connector assigment → page 804/5
q   26-pin connector → page 804/5
q   47-pin connector assigment → page 804/6
q   47-pin connector → page 804/6
2 -  Automatic gearbox control unit -J217-
q   Location → page 804/7
q   Connector assigment → page 804/8
q   Connector → page 804/8

   

León Fitting Locations No.  804 / 2
   
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3 -  Engine control units
q   Location → page 804/9
q   Connector assigment (Simos control unit -J361-) → page 804/10
q   Connector (Simos control unit -J361-) → page 804/10
q   Connector assigment (Motronic control unit -J220-) → page 804/11
q   Connector (Motronic control unit -J220-) → page 804/11
q   Connector assigment (diesel direct injection system control unit -J248-) → page 804/12
q   Connector (diesel direct injection system control unit -J248-) → page 804/12
q   Connector assigment (4HV control unit -J537-) → page 804/13
q   Connector (4HV control unit -J537-) → page 804/13
q   Connector assigment (engine control unit -J623-) → page 804/14
q   Connector (engine control unit -J623-) → page 804/14

   

León Fitting Locations No.  804 / 3
   
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4 -  Power steering control unit -J500-
q   from April 2005:
q   Location → page 804/15
q   Connector assigment → page 804/16
q   Connector → page 804/16
q   From May 2008 (only for right-handdrive vehicles):
q   Location → page 804/15
q   Connector assigment → page 804/17
q   Connector → page 804/17

   

León Fitting Locations No.  804 / 4
ABS control unit with EDL -J104-
   
Location:
In engine compartment, right -arrow-
 
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León Fitting Locations No.  804 / 5
   
26-pin connector assigment:
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A -  ABS control unit with EDL -J104-
26-pin connector:
B -  26-pin connector, in wiring harness -T26a-

   

León Fitting Locations No.  804 / 6
   
47-pin connector assigment:
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A -  ABS control unit with EDL and ESP -J104-
47-pin connector:
B -  47-pin connector, in wiring harness -T47-

   

León Fitting Locations No.  804 / 7
Automatic gearbox control unit -J217-
   
Location:
Under front left wing -arrow-
 
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León Fitting Locations No.  804 / 8
   
Connector assigment:
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A -  Automatic gearbox control unit -J217-
q   Engines BLR, BVY and BVZ
Connector:
B -  52-pin connector, in wiring harness -T52-

   

León Fitting Locations No.  804 / 9
Engine control units
   
Location:
In centre plenum chamber -arrow-
 
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León Fitting Locations No.  804 / 10
   
Connector assigment (Simos control unit -J361-):
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A -  Simos control unit -J361-
q   Engines BSE, BSF and CCSA
Connector (Simos control unit -J361-):
B -  81-pin connector, in wiring harness -T121-
C -  40-pin connector, in wiring harness -T121-

   

León Fitting Locations No.  804 / 11
   
Connector assigment (Motronic control unit -J220-):
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A -  Motronic control unit -J220-
q   Engines BLR, BVY, BVZ, BWA and BWJ
Connector (Motronic control unit -J220-):
B -  94-pin connector, in wiring harness -T94-
C -  60-pin connector, in wiring harness -T60-

   

León Fitting Locations No.  804 / 12
   
Connector assigment (Diesel direct injection system control unit -J248-):
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A -  Diesel direct injection system control unit -J248-
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BXE and BXF
Connector (Diesel direct injection system control unit -J248-):
B -  94-pin connector, in wiring harness -T94-
C -  60-pin connector, in wiring harness -T60-

   

León Fitting Locations No.  804 / 13
   
Connector assigment (4HV control unit -J537-):
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A -  4HV control unit -J537-
q   Engine BXW
Connector (4HV control unit -J537-):
B -  52-pin connector, in wiring harness -T80-
C -  28-pin connector, in wiring harness -T80-

   

León Fitting Locations No.  804 / 14
   
Connector assigment (engine control unit -J623-):
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A -  Engine control unit -J623-
q   Engine BZB and CAXC
Connector (engine control unit -J623-):
B -  94-pin connector, in wiring harness -T94-
C -  60-pin connector, in wiring harness -T60-

   

León Fitting Locations No.  804 / 15
Power steering control unit -J500-
   
Location:
On the steering on the assembly carrier, centre -arrow-
 
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León Fitting Locations No.  804 / 16
   
Connector assigment:
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A -  Power steering control unit -J500-
Connector:
B -  Pin connector -T5e-
q   T5e/1 = Drive train CAN, low
q   T5e/2 = Drive train CAN, high
q   T5e/3 = vacant
q   T5e/4 = Voltage supply, terminal 15
q   T5e/5 = vacant
C -  Pin connector -T5f-
q   T5f/1 = vacant
q   T5f/2 = Steering angle sender shaft speed sender
q   T5f/3 = Steering angle sender shaft speed sender
q   T5f/4 = Steering angle sender shaft speed sender
q   T5f/5 = Steering angle sender shaft speed sender
D -  Pin connector -T2a-
q   T2a/1 = Earth, terminal 31, power steering motor
q   T2a/2 = Voltage supply, terminal 30, power steering motor

   

León Fitting Locations No.  804 / 17
   
Connector assigment:
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A -  Power steering control unit -J500-
Connector:
B -  Connector -T3t-
q   T3t/1 = Drive train CAN, low
q   T3t/2 = Drive train CAN, high
q   T3t/3 = Voltage supply, terminal 15
C -  Pin connector -T5f-
q   T5f/1 = Steering angle sender shaft speed sender
q   T5f/2 = Steering angle sender shaft speed sender
q   T5f/3 = Steering angle sender shaft speed sender
q   T5f/4 = Steering angle sender shaft speed sender
q   T5f/5 = Steering angle sender shaft speed sender
D -  Pin connector -T2a-
q   T2a/1 = Earth, terminal 31, power steering motor
q   T2a/2 = Voltage supply, terminal 30, power steering motor

   


SEAT LEON 2011 Overview of relay on relay carrier

Overview of relay on relay carrier
   
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1 -  Additional relay carrier
q   Under electronics box, in left engine compartment
q   from April 2005:
q   Position of relays → page 803/3
q   from November 2005:
q   Position of relays → page 803/4
q   from May 2006:
q   Position of relays → page 803/5
q   from November 2006:
q   Position of relays → page 803/6
q   from May 2007:
q   Position of relays → page 803/7
2 -  Relay on relay carrier in electronics box
q   Left in engine compartment
q   from April 2005:
q   Position of relays → page 803/8
q   from November 2005:
q   Position of relays → page 803/9
q   from May 2006:
q   Position of relays → page 803/10
q   from November 2006:
q   Position of relays → page 803/11
q   from May 2007:
q   Position of relays → page 803/12
q   from November 2007:
q   Position of relays → page 803/13

   

León Fitting Locations No.  803 / 2
   
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3 -  terminal on relay carrier on onboard supply control unit
q   Left dash panel
q   from April 2005:
q   Position of relays → page 803/14
q   from November 2005:
q   Position of relays → page 803/15
q   from May 2006:
q   Position of relays → page 803/16
q   from November 2006:
q   Position of relays → page 803/17
q   from May 2008:
q   Position of relays → page 803/18
4 -  Relay carrier
q   Left dash panel
q   from April 2005:
q   Position of relays → page 803/19
q   from November 2005:
q   Position of relays → page 803/20
q   from May 2006:
q   Position of relays → page 803/21
q   from November 2006:
q   Position of relays → page 803/23
q   from May 2007:
q   Position of relays → page 803/25
q   from November 2007:
q   Position of relays → page 803/27
q   from May 2008:
q   Position of relays → page 803/29

   

León Fitting Locations No.  803 / 3
Relay position assignment on additional relay carrier under electronics box in left engine compartment, from April 2005
  Note:
The additional relay carrier is located under the electronics box and is only visible when it is removed.
   
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C1 -  Vacant
C2 -  Automatic glow period control unit -J179- (461)
q   Engines AZV, BKC and BKD
C3 -  Vacant
C4 -  Vacant
C5 -  Vacant
C6 -  Vacant

   

León Fitting Locations No.  803 / 4
   


SEAT LEON 2011 Additional relay carrier, under electronics box, on left of engine compartment, from November 2005

Additional relay carrier, under electronics box, on left of engine compartment, from November 2005
Automatic glow period control unit -J179- (engines AZV, BKC, BKD, BLS, BMM and BXE)
 
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León Fitting Locations No.  803 / 5
   


SEAT LEON 2011 Additional relay carrier, under electronics box, on left of engine compartment, from May 2006

Additional relay carrier, under electronics box, on left of engine compartment, from May 2006
Automatic glow period control unit -J179- (engines AZV, BKC, BKD, BLS, BMM, BMN and BXE)
 
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León Fitting Locations No.  803 / 6
   


SEAT LEON 2011 Additional relay carrier, under electronics box, on left of engine compartment, from November 2006

Additional relay carrier, under electronics box, on left of engine compartment, from November 2006
Automatic glow period control unit -J179- (engines AZV, BKC, BKD, BLS, BMM, BMN and BXE)
 
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León Fitting Locations No.  803 / 7
   


SEAT LEON 2011 Additional relay carrier, under electronics box, on left of engine compartment, from May 2007

Additional relay carrier, under electronics box, on left of engine compartment, from May 2007
Automatic glow period control unit -J179- (engines AZV, BKC, BKD, BLS, BMM, BMN, BXE and BXF)
 
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León Fitting Locations No.  803 / 8
   


SEAT LEON 2011 Relay locations on electronics box on electronics box, on left of engine compartment, from April 2005

Relay locations on electronics box on electronics box, on left of engine compartment, from April 2005
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A1 -  Terminal 30 voltage supply relay -J317- (458)
q   Engines AZV, BKC, BKD and BSE
 -  Motronic current supply relay -J271- (458)
q   Engines BLR and BWA1
A2 -  Secondary air pump fuse -J299- (100)
q   Engine BSE

   

León Fitting Locations No.  803 / 9
   


SEAT LEON 2011 Relay locations in electronics box, in left engine compartment, from November 2005

Relay locations in electronics box, in left engine compartment, from November 2005
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A1 -  Terminal 30 voltage supply relay -J317- (458)
q   Engines AZV, BKC, BKD, BLS, BMM, BSE, BSF and BXE
 -  Motronic current supply relay -J271- (458)
q   Engines BVY, BVZ and BWA1
A2 -  Secondary air pump fuse -J299- (100)
q   Engine BSE

   

León Fitting Locations No.  803 / 10
   


SEAT LEON 2011 Relay locations in electronics box, in left engine compartment, from May 2006

Relay locations in electronics box, in left engine compartment, from May 2006
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A1 -  Terminal 30 voltage supply relay -J317- (458)
q   Engines BSE and BSF
 -  Terminal 30 voltage supply relay -J317- (100)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BXE and BXW
 -  Motronic current supply relay -J271- (100)
q   Engines BVY, BVZ and BWA
A2 -  Secondary air pump fuse -J299- (100)
q   Engine BSE

   

León Fitting Locations No.  803 / 11
   


SEAT LEON 2011 Relay locations in electronics box, in left engine compartment, from November 2006

Relay locations in electronics box, in left engine compartment, from November 2006
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A1 -  Terminal 30 voltage supply relay -J317- (458)
q   Engines BSE and BSF
 -  Terminal 30 voltage supply relay -J317- (100)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BXE and BXW
 -  Motronic current supply relay -J271- (100)
q   Engines BVY, BVZ, BWA and BWJ
A2 -  Secondary air pump fuse -J299- (100)
q   Engine BSE

   

León Fitting Locations No.  803 / 12
   


SEAT LEON 2011 Relay locations in electronics box, in left engine compartment, from May 2007

Relay locations in electronics box, in left engine compartment, from May 2007
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A1 -  Terminal 30 voltage supply relay -J317- (100)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BXE, BXF and BXW
 -  Terminal 30 voltage supply relay -J317- (458)
q   Engines BSE and BSF
 -  Motronic current supply relay -J271- (100)
q   Engines BVY, BVZ, BWA, BWJ and BZB
A2 -  Secondary air pump fuse -J299- (100)
q   Engine BSE
 -  Current supply relay, relais for engine components -J757- (100)
q   Engine BZB

   

León Fitting Locations No.  803 / 13
   


SEAT LEON 2011 Relay locations in electronics box, in left engine compartment, from November 2007

Relay locations in electronics box, in left engine compartment, from November 2007
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A1 -  Terminal 30 voltage supply relay -J317- (100)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BXE, BXF and BXW
 -  Terminal 30 voltage supply relay -J317- (458)
q   Engines BSE, BSF and CCSA
 -  Motronic current supply relay -J271- (100)
q   Engines BVY, BVZ, BWA, BWJ, BZB and CAXC
A2 -  Secondary air pump fuse -J299- (100)
q   Engines BSE and CCSA
 -  Current supply relay, relais for engine components -J757- (100)
q   Engine BZB
 -  Additional coolant pump relay -J496- (100)
q   Engine CAXC

   

León Fitting Locations No.  803 / 14
   


SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from April 2005

Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from April 2005
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B1 -  Terminal 15 voltage supply relay 2 -J681- (460)
B2 -  Seat heater relay -J83- (449)
B3 -  Rear lid central locking relay -J380- (404)
B4 -  Terminal 30 voltage supply relay 2 -J689- (449)
B5 -  Heated rear window relay - J9 (53)
B6 -  Dual tone horn relay -J4- (449)
B7 -  Double washer pump relay 1 -J729- (404)
B8 -  Double washer pump relay 2 -J730- (404)
B9 -  X-contact relief relay -J59- (460)

   

León Fitting Locations No.  803 / 15
   


SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from November 2005

Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from November 2005
SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from November 2005 https://portal-diagnostov.com/license.html
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B1 -  Terminal 15 voltage supply relay 2 -J681- (460)
B2 -  Seat heater relay -J83- (449)
B3 -  Rear lid central locking relay -J380- (395)
B4 -  Terminal 30 voltage supply relay 2 -J689- (449)
B5 -  Heated rear window relay - J9 (53)
B6 -  Dual tone horn relay -J4- (449)
B7 -  Double washer pump relay 1 -J729- (395)
B8 -  Double washer pump relay 2 -J730- (395)
B9 -  X-contact relief relay -J59- (460)

   

León Fitting Locations No.  803 / 16
   


SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from May 2006

Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from May 2006
SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from May 2006 https://portal-diagnostov.com/license.html
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B1 -  Terminal 15 voltage supply relay 2 -J681- (460)
B2 -  Seat heater relay -J83- (449)
B3 -  Rear lid central locking relay -J380- (395)
B4 -  Terminal 30 voltage supply relay 2 -J689- (449)
B5 -  Heated rear window relay - J9 (53)
B6 -  Dual tone horn relay -J4- (449)
B7 -  Double washer pump relay 1 -J729- (395)
B8 -  Double washer pump relay 2 -J730- (395)
B9 -  X-contact relief relay -J59- (460)

   

León Fitting Locations No.  803 / 17
   


SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from November 2006

Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from November 2006
SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from November 2006 https://portal-diagnostov.com/license.html
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B1 -  Terminal 15 voltage supply relay 2 -J681- (460)
B2 -  Seat heater relay -J83- (449)
B3 -  Rear lid central locking relay -J380- (395)
B4 -  Terminal 30 voltage supply relay 2 -J689- (449)
B5 -  Heated rear window relay -J9- (53) or (373)
B6 -  Dual tone horn relay -J4- (449)
B7 -  Double washer pump relay 1 -J729- (395)
B8 -  Double washer pump relay 2 -J730- (395)
B9 -  X-contact relief relay -J59- (460)

   

León Fitting Locations No.  803 / 18
   


SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from May 2008

Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from May 2008
SEAT LEON 2011 Position of relays on the relay carrier on onboard power supply control unit, left dash panel, from May 2008 https://portal-diagnostov.com/license.html
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B1 -  Terminal 15 voltage supply relay 2 -J681- (460)
B2 -  Vacant
B3 -  Rear lid central locking relay -J380- (395) or (404)
B4 -  Terminal 30 voltage supply relay 2 -J689- (449)
B5 -  Heated rear window relay -J9- (53) or (373)
B6 -  Dual tone horn relay -J4- (449)
B7 -  Double washer pump relay 1 -J729- (395) or (404)
B8 -  Double washer pump relay 2 -J730- (395) or (404)
B9 -  X-contact relief relay -J59- (460)

   

León Fitting Locations No.  803 / 19
   


SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from April 2005

Relay locations on relay carrier, left dash panel, from April 2005
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from April 2005 https://portal-diagnostov.com/license.html
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1 -  Headlight washer system relay -J39- (53)
2 -  Fuel pump relay -J17- (449)
q   Engines AZV, BKC, BKD and BSE
 -  Circulation pump relay -J160- (395)
q   Engine BWA1
 -  Current supply relay for Simos control unit -J363- (449)
q   Engine BSE
 -  Motronic current supply relay 2 -J670- (449)
q   Engine BWA1
3 -  Terminal 50 voltage supply relay -J682- (433)
4 -  Heated windscreen relay -J47- (404)
5 -  Vacant

   

León Fitting Locations No.  803 / 20
   


SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2005

Relay locations on relay carrier, left dash panel, from November 2005
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2005 https://portal-diagnostov.com/license.html
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1 -  Headlight washer system relay -J39- (53)
2 -  Fuel pump relay -J17- (395)
q   Engines AZV, BKC, BKD, BLS, BMM, BSE, BSF and BXE
 -  Circulation pump relay -J160- (395)
q   Engine BWA1
 -  Current supply relay for Simos control unit -J363- (395)
q   Engines BSE and BSF
 -  Motronic current supply relay 2 -J670- (395)
q   Engine BWA1
3 -  Terminal 50 voltage supply relay -J682- (433)
4 -  Heated windscreen relay -J47- (395)
5 -  Vacant

   

León Fitting Locations No.  803 / 21
   


SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2006

Relay locations on relay carrier, left dash panel, from May 2006
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2006 https://portal-diagnostov.com/license.html
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1 -  Headlight washer system relay -J39- (53)
2 -  Fuel pump relay -J17- (395)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BSE, BSF, BXE and BXW
 -  Circulation pump relay -J160- (395)
q   Engine BWA
 -  Current supply relay for Simos control unit -J363- (395)
q   Engines BSE and BSF
 -  Fuel supply relay -J643- (395)
q   Engine BXW
 -  Motronic current supply relay 2 -J670- (395)
q   Engine BWA

   

León Fitting Locations No.  803 / 22
   
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2006 https://portal-diagnostov.com/license.html
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3 -  Terminal 50 voltage supply relay -J682- (53)
4 -  Heated windscreen relay -J47- (395)
5 -  Vacant

   

León Fitting Locations No.  803 / 23
   


SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2006

Relay locations on relay carrier, left dash panel, from November 2006
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2006 https://portal-diagnostov.com/license.html
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1 -  Headlight washer system relay -J39- (53) or (373)
2 -  Fuel pump relay -J17- (395)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BSE, BSF, BXE and BXW
 -  Circulation pump relay -J160- (395)
q   Engines BWA and BWJ
 -  Current supply relay for Simos control unit -J363- (395)
q   Engines BSE and BSF
 -  Fuel supply relay -J643- (395)
q   Engine BXW
 -  Motronic current supply relay 2 -J670- (395)
q   Engines BWA and BWJ
 -  Heated windscreen relay -J47- (395)
q   diesel engines

   

León Fitting Locations No.  803 / 24
   
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2006 https://portal-diagnostov.com/license.html
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3 -  High heat output relay -J360- (370)
q   diesel engines
4 -  Heated windscreen relay -J47- (395)
q   petrol engines
 -  Low heat output relay -J359- (373)
q   diesel engines
5 -  Terminal 50 voltage supply relay -J682- (53) or (373)

   

León Fitting Locations No.  803 / 25
   


SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2007

Relay locations on relay carrier, left dash panel, from May 2007
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2007 https://portal-diagnostov.com/license.html
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1 -  Headlight washer system relay -J39- (53) or (373)
2 -  Fuel pump relay -J17- (395)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BSE, BSF, BXE, BXF and BXW
 -  Circulation pump relay -J160- (395)
q   Engines BWA and BWJ
 -  Current supply relay for Simos control unit -J363- (395)
q   Engines BSE and BSF
 -  Fuel supply relay -J643- (395)
q   Engine BXW
 -  Motronic current supply relay 2 -J670- (395)
q   Engines BWA and BWJ
 -  Heated windscreen relay -J47- (395)
q   diesel engines
 -  Continued coolant circulation relay -J151- (395)
q   Engine BZB

   

León Fitting Locations No.  803 / 26
   
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2007 https://portal-diagnostov.com/license.html
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3 -  High heat output relay -J360- (370)
q   diesel engines
4 -  Heated windscreen relay -J47- (395)
q   petrol engines
 -  Low heat output relay -J359- (373)
q   diesel engines
5 -  Terminal 50 voltage supply relay -J682- (53) or (373)

   

León Fitting Locations No.  803 / 27
   


SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2007

Relay locations on relay carrier, left dash panel, from November 2007
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2007 https://portal-diagnostov.com/license.html
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1 -  Headlight washer system relay -J39- (53) or (373)
2 -  Fuel pump relay -J17- (395)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BSE, BSF, BXE, BXF, BXW and CCSA
 -  Circulation pump relay -J160- (395)
q   Engines BWA and BWJ
 -  Current supply relay for Simos control unit -J363- (395)
q   Engines BSE, BSF and CCSA
 -  Fuel supply relay -J643- (395)
q   Engine BXW
 -  Motronic current supply relay 2 -J670- (395)
q   Engines BWA and BWJ
 -  Heated windscreen relay -J47- (395)
q   diesel engines
 -  Continued coolant circulation relay -J151- (395)
q   Engine BZB

   

León Fitting Locations No.  803 / 28
   
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from November 2007 https://portal-diagnostov.com/license.html
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3 -  High heat output relay -J360- (370)
q   diesel engines
4 -  Heated windscreen relay -J47- (395)
q   petrol engines
 -  Low heat output relay -J359- (373)
q   diesel engines
5 -  Terminal 50 voltage supply relay -J682- (53) or (373)

   

León Fitting Locations No.  803 / 29
   


SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2008

Relay locations on relay carrier, left dash panel, from May 2008
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2008 https://portal-diagnostov.com/license.html
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1 -  Headlight washer system relay -J39- (53) or (373)
2 -  Fuel pump relay -J17- (395) or (404)
q   Engines AZV, BKC, BKD, BLS, BMM, BMN, BSE, BSF, BXE, BXF, BXW and CCSA
 -  Circulation pump relay -J160- (395) or (404)
q   Engines BWA and BWJ
 -  Current supply relay for Simos control unit -J363- (395) or (404)
q   Engines BSE, BSF and CCSA
 -  Fuel supply relay -J643- (395) or (404)
q   Engine BXW
 -  Motronic current supply relay 2 -J670- (395) or (404)
q   Engines BWA and BWJ
 -  Heated windscreen relay -J47 (395) or (404)
q   diesel engines

   

León Fitting Locations No.  803 / 30
   
SEAT LEON 2011 Relay locations on relay carrier, left dash panel, from May 2008 https://portal-diagnostov.com/license.html
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 -  Continued coolant circulation relay -J151- (395) or (404)
q   Engine BZB
3 -  High heat output relay -J360- (370)
q   diesel engines
4 -  Heated windscreen relay -J47 (395) or (404)
q   petrol engines
 -  Low heat output relay -J359- (373)
q   diesel engines
5 -  Terminal 50 voltage supply relay -J682- (53) or (373)

   


SEAT LEON 2011

Connector:

SEAT LEON 2011 Control units overview

Control units overview
   
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1 -  Convenience system central control unit -J393-
q   Location → page 805/5
q   Connector assigment → page 805/6
q   Connector → page 805/6
2 -  Airbag control unit -J234-
q   from April 2005:
q   Location → page 805/7
q   50-pin connector assigment → page 805/8
q   50-pin connector → page 805/8
q   75-pin connector assigment → page 805/9
q   75-pin connector → page 805/9
q   from November 2007:
q   100-pin connector assigment → page 805/10
q   100-pin connector → page 805/10

   

León Fitting Locations No.  805 / 2
   
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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3 -  Front passenger side door control unit -J387-
q   Location → page 805/11
q   Connector assigment → page 805/12
q   Connector → page 805/12
4 -  Headlight range control, control unit -J431-
q   Location → page 805/13
q   Connector assigment → page 805/14
q   Connector → page 805/14
5 -  Cornering light and headlight range control unit -J745-
q   from May 2005:
q   Location → page 805/15
q   Connector assigment → page 805/16
q   Connector → page 805/16
6 -  Rear right door control unit -J389-
q   Location → page 805/17
q   Connector assigment → page 805/18
q   Connector → page 805/18

   

León Fitting Locations No.  805 / 3
   
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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7 -  Fuel pump control unit -J538-
q   Location → page 805/19
q   Connector assigment → page 805/20
q   Connector → page 805/20
8 -  Rear left door control unit -J388-
q   Location → page 805/21
q   Connector assigment → page 805/22
q   Connector → page 805/22
9 -  Sliding sunroof adjustment control unit -J245-
q   Location → page 805/23
q   Connector assigment → page 805/24
q   Connector → page 805/24
10 -  Driver door control unit -J386-
q   Location → page 805/25
q   Connector assigment → page 805/26
q   Connector → page 805/26

   

León Fitting Locations No.  805 / 4
   
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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11 -  Data bus diagnostic interface -J533-
q   Location → page 805/27
q   Connector assigment → page 805/28
q   Connector → page 805/28
12 -  Steering column electronics control unit -J527-
q   Location → page 805/29
q   Connector assigment → page 805/30
q   Connector → page 805/30
13 -  Onboard supply control unit -J519-
q   Location → page 805/31
q   Connector → page 805/32
q   Description of signal → page 805/33
14 -  Display control unit in dash panel insert -J285-
q   Location → page 805/39
q   Connector assigment → page 805/40
q   Connector → page 805/40

   

León Fitting Locations No.  805 / 5
Convenience system central control unit -J393-
   
Location:
Below the dash panel on right, near centre console -arrow-
 
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León Fitting Locations No.  805 / 6
   
Connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Convenience system central control unit -J393-
Connector:
B -  is not installed
C -  18-pin connector -T18-, in wiring harness
D -  8-pin connector -T8-, in wiring harness
E -  6-pin connector -T6-, in wiring harness
F -  18-pin connector -T18a-, in wiring harness

   

León Fitting Locations No.  805 / 7
Airbag control unit -J234-
   
Location:
Under centre console -arrow-
 
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León Fitting Locations No.  805 / 8
   
50-pin connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Airbag control unit -J234-
50-pin connector:
B -  50-pin connector -T50-, in wiring harness

   

León Fitting Locations No.  805 / 9
   
75-pin connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Airbag control unit -J234-
75-pin connector:
B -  75-pin connector -T75-, in wiring harness

   

León Fitting Locations No.  805 / 10
   
100-pin connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Airbag control unit -J234-
100-pin connector:
B -  100-pin connector, -T100-, in wiring harness

   

León Fitting Locations No.  805 / 11
Front passenger side door control unit -J387-
   
Location:
In front passenger door -arrow-
 
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León Fitting Locations No.  805 / 12
   
Connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Front passenger side door control unit -J387-
Connector:
B -  20-pin connector -T20h-, in wiring harness
C -  16-pin connector -T16a-, in wiring harness
D -  32-pin connector -T32a-, in wiring harness

   

León Fitting Locations No.  805 / 13
Headlight range control, control unit -J431-
   
Location:
In dash panel, right -arrow-
 
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León Fitting Locations No.  805 / 14
   
Connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Headlight range control, control unit -J431-
Connector:
B -  26-pin connector -T26-, in wiring harness

   

León Fitting Locations No.  805 / 15
Cornering light and headlight range control unit -J745-
   
Location:
In dash panel, right -arrow-
 
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León Fitting Locations No.  805 / 16
   
Connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Cornering light and headlight range control unit -J745-
Connector:
B -  26-pin connector -T26-, in wiring harness

   

León Fitting Locations No.  805 / 17
Rear right door control unit -J389-
   
Location:
In rear right door -arrow-
 
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León Fitting Locations No.  805 / 18
   
Connector assigment:
SEAT LEON 2011 Control units overview https://portal-diagnostov.com/license.html
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A -  Rear right door control unit -J389-
Connector:
B -  18-pin connector -T18c-, in wiring harness

   

León Fitting Locations No.  805 / 19
Fuel pump control unit -J538-
   
Location:
Under rear seat, right, on fuel delivery unit -arrow-
 
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León Fitting Locations No.  805 / 20
   
Connector assigment:
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A -  Fuel pump control unit -J538-
q   Engines BLR, BVY, BVZ, BWA, BWA1 BWJ, BZB and CAXC
Connector:
B -  10-pin connector -T10l-, in wiring harness

   

León Fitting Locations No.  805 / 21
Rear left door control unit -J388-
   
Location:
In rear left door -arrow-
 
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León Fitting Locations No.  805 / 22
   
Connector assigment:
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A -  Rear left door control unit -J388-
Connector:
B -  18-pin connector -T18b-, in wiring harness

   

León Fitting Locations No.  805 / 23
Sliding sunroof adjustment control unit -J245-
   
Location:
Behind front interior light -arrow-
 
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León Fitting Locations No.  805 / 24
   
Connector assigment:
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A -  Sliding sunroof adjustment control unit -J245-
Connector:
B -  6-pin connector -T6c-, in wiring harness
C -  6-pin connector -T6d-, on control unit extension

   

León Fitting Locations No.  805 / 25
Driver door control unit -J386-
   
Location:
In driver door -arrow-
 
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León Fitting Locations No.  805 / 26
   
Connector assigment:
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A -  Driver door control unit -J386-
Connector:
B -  20-pin connector -T20g-, in wiring harness
C -  16-pin connector -T16b-, in wiring harness
D -  32-pin connector -T32-, in wiring harness

   

León Fitting Locations No.  805 / 27
Data bus diagnostic interface -J533-
   
Location:
Below the dash panel on left, near centre console -arrow-
 
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León Fitting Locations No.  805 / 28
   
Connector assigment:
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A -  Data bus diagnostic interface -J533-
Connector:
B -  20-pin connector -T20-, in wiring harness

   

León Fitting Locations No.  805 / 29
Steering column electronics control unit -J527-
   
Location:
On steering column -arrow-
 
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León Fitting Locations No.  805 / 30
   
Connector assigment:
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A -  Steering column electronics control unit -J527-
Connector:
B -  4-pin connector, Tiptronic switch
C -  10-pin connector, gear stick illumination and CCS
D -  12-pin connector, ignition/starter switch and ignition key withdrawal lock
E -  8-pin connector, windscreen wiper switch and multifunction switch
F -  10-pin connector, steering angle sender (from May 2008, for left-handdrive vehicles only)
G -  10-pin connector, airbag coil connector, operating unit and horn in steering wheel
H -  4-pin connector -T4f-, in wiring harness
J -  20-pin connector -T20d-, in wiring harness

   

León Fitting Locations No.  805 / 31
Onboard supply control unit -J519-
   
Location:
On left under dash panel, under relay carrier -arrow-.
 
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León Fitting Locations No.  805 / 32
   
Pin connector:
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A -  11-pin connector
B -  12-pin connector
C -  12-pin connector
D -  11-pin connector
E -  16-pin connector
F -  8-pin connector
G -  12-pin connector
H -  Vacant
I -  2-pin connector
J -  6-pin connector
K -  10-pin connector
L -  2-pin connector

   

León Fitting Locations No.  805 / 33
   
Description of signal onboard power supply control unit -J519-
Connector Pin Terminal Equipment
H
Equipment
M
A 1 Supply (30), right lights x x
A 2 Right dipped beam signal output x x
A 3 Right main beam signal output x x
A 4 Right fog light signal output x -
A 5 Signal output for the activation of the gas discharge headlights on the right x -
A 6 Signal output for front right turn signal x x
A 7 Front left side light signal output x x
A 8 Signal output for left side repeater turn signal x x
A 9 Signal earth (31), left lights x x
A 10 Fuel pump relay signal output x x
A 11 Voltage supply relay (50) signal output x x
B 1 Right reversing light signal output x x
B 2   - -
B 3   - -
B 4 Rear left fog light signal output x x
B 5 Right brake and tail light signal output x x
B 6   - -
B 7 Footwell light signal output x x
B 8   - -

   

León Fitting Locations No.  805 / 34
   
Connector Pin Terminal Equipment
H
Equipment
M
B 9 Right tail light signal output x x
B 10 Signal output for rear right turn signal x x
B 11 Interior lighting, door contact switch signal output x x
B 12 Illumination - switches and instruments (58d) signal output x x
C 1 Signal output for switching heated seat off x x
C 2 Left brake and tail light signal output x x
C 3 Rear right fog light signal output x x
C 4   - -
C 5 Left seat backrest switch signal output x x
C 6 Right seat backrest switch signal output x x
C 7   - -
C 8 Number plate light signal output x x
C 9 High level brake light signal output x x
C 10 Left tail light signal output x x
C 11 Left tail light signal output x x
C 12 Left reversing light signal output x x
D 1 Supply (30), left lights x x
D 2 Left fog light signal output x -
D 3 Left main beam signal output x x
D 4 Left dipped beam signal output x x

   

León Fitting Locations No.  805 / 35
   
Connector Pin Terminal Equipment
H
Equipment
M
D 5 Signal earth (31), right lights x x
D 6 Signal output for the activation of the gas discharge headlights on the left x -
D 7 Supply (15) output signal, engine relay x x
D 8 Headlight washer system relay signal output x x
D 9 Signal output for right side repeater turn signal x x
D 10 Front right side light signal output x x
D 11 Signal output for front left turn signal x x
E 1 Side light switch signal input x x
E 2 Brake light switch signal input x x
E 3 Come-Home potentiometer earth x x
E 4 Come-Home potentiometer supply x x
E 5   - -
E 6 Fog light switch signal input x -
E 7 Selector lever lock P/N signal input x x
E 8 Dipped beam switch input signal x x
E 9   - -
E 10   - -
E 11   - -

   

León Fitting Locations No.  805 / 36
   
Connector Pin Terminal Equipment
H
Equipment
M
E 12 Come-Home potentiometer input signal x x
E 13 Rear fog light switch signal input x x
E 14 Automatic driving lights switch signal input x x
E 15   - -
E 16 Light switch position "0" signal input x x
F 1 Signal input (50), diagnosis x x
F 2 Signal input (15), diagnosis engine x x
F 3 LIN-Bus x x
F 4 Signal (L) alternator x x
F 5 Bonnet switch input signal x x
F 6 Reversing light switch signal input x x
F 7 Input signal for reference voltage (30) x x
F 8 Input signal for earth - reference voltage (31) x x
G 1 Voltage supply (50) for ignition/starter switch signal input x x
G 2 Hazard warning light system warning lamp signal input x x
G 3 Heated rear window warning lamp signal input x x
G 4 Signal earth for illumination regulators - switches and instruments (31) x x
G 5   - -
G 6 Heated rear window button input signal x x

   

León Fitting Locations No.  805 / 37
   
Connector Pin Terminal Equipment
H
Equipment
M
G 7 Convenience CAN-L x x
G 8 Convenience CAN-H x x
G 9 Hazard warning light switch signal input x x
G 10 Supply for switches and instruments illumination regulator x x
G 11 Voltage supply (15) for ignition/starter switch signal input x x
G 12 Switches and instruments illumination regulator signal input x x
H 1   - -
H 2   - -
H 3   - -
H 4   - -
H 5   - -
H 6   - -
H 7   - -
H 8   - -
H 9   - -
H 10   - -
H 11   - -
H 12   - -

   

León Fitting Locations No.  805 / 38
   
Connector Pin Terminal Equipment
H
Equipment
M
I 1 Supply (75a) input x x
I 2 Supply (75x) output x x
J 1 Washer pump supply input x x
J 2 Washer pump motor and rear window wiper motor signal output x x
J 3 signal horn x x
J 4 Washer pump motor and rear window wiper motor signal output x x
J 5 Washer pump earth (31) x x
J 6 Horn signal output x x
K 1 Heated rear window signal output x x
K 2   - -
K 3   - -
K 4   - -
K 5 Supply input (30G) x x
K 6 Heated rear window supply input x x
K 7   - -
K 8   - -
K 9   - -
K 10 Supply output (30G) x x
L 1 Interior supply input (15) x x
L 2 Interior supply output (15) x x

   

León Fitting Locations No.  805 / 39


SEAT LEON 2011 Display control unit in dash panel insert -J285-

Display control unit in dash panel insert -J285-
   
Location:
In dash panel -arrow-
 
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León Fitting Locations No.  805 / 40
   
Connector assigment:
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A -  Display control unit in dash panel insert -J285-
Connector:
B -  36-pin connector -T36-, in wiring harness

   


SEAT LEON 2011 Overview of earth points in engine compartment

Overview of earth points in engine compartment
   
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1 -  Earth point, on right in engine compartment -13-
q   Location → page 801/4
2 -  Earth point, on left in plenum chamber -607-
q   Location → page 801/4
3 -  Earth strap, battery body, on left in engine compartment, next to battery -1-
q   Location → page 801/5
4 -  Earth point 2, on front of left longitudinal member -672-
q   from April 2005:
q   Location → page 801/5
q   from November 2005:
q   Location → page 801/6

   

León Fitting Locations No.  801 / 2
   
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5 -  Earth point 3, on front of left longitudinal member -673-
q   from April 2005:
q   Location → page 801/5
q   from November 2005:
q   Location → page 801/6
6 -  Earth point 1, on front of left longitudinal member -671-
q   from April 2005:
q   Location → page 801/5
q   from November 2005:
q   Location → page 801/6
7 -  Earth strap, engine - body -3-
q   from April 2005:
q   Location → page 801/5
q   from November 2005:
q   Location → page 801/6

   

León Fitting Locations No.  801 / 3
   
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8 -  Earth point, on engine block -18-
q   only models with engine codes BLR, BVY, BVZ, BWA, BWJ, BXW, BZB and CAXC:
q   Location → page 801/6

   

León Fitting Locations No.  801 / 4
   
  13 Earth point, in engine compartment, right -arrow-
 
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  607 Earth point, on left in plenum chamber -arrow-
 
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León Fitting Locations No.  801 / 5
   
  1 Earth strap, battery body, on left in engine compartment, next to battery -arrow-
 
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From April 2005
  671 Earth point 1, on front left longitudinal member -arrow A-
  673 Earth point 3, on front left longitudinal member -arrow B-
  672 Earth point 2, on front left longitudinal member -arrow C-
  3 Earth strap, engine - body -arrow D-
 
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León Fitting Locations No.  801 / 6
   
from November 2005
  671 Earth point 1, on front left longitudinal member -arrow A-
  672 Earth point 2, on front left longitudinal member -arrow B-
  673 Earth point 3, on front left longitudinal member -arrow C-
  3 Earth strap, engine - body -arrow C-
 
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Only models with engine codes BLR, BVY, BVZ, BWA, BWJ, BXW, BZB and CAXC
  18 Earth point on engine block -arrow-
 
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León Fitting Locations No.  801 / 7
   


SEAT LEON 2011 Overview of earth points in vehicle interior

Overview of earth points in vehicle interior
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1 -  Earth point (audio), under centre console, front -610-
q   Location → page 801/9
2 -  Earth point, lower part of right A-pillar -43-
q   from April 2005:
q   Location → page 801/9
q   from May 2005:
q   Location → page 801/10
3 -  Earth point, in front right footwell -47-
q   from April 2005:
q   Location → page 801/9
q   from May 2005:
q   Location → page 801/10
4 -  Earth point 2, on lower part of right A-pillar -617-
q   from April 2005:
q   Location → page 801/9

   

León Fitting Locations No.  801 / 8
   
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5 -  Earth point, lower part of right B-pillar -78-
q   Location → page 801/10
6 -  Earth point, lower part of left B-pillar -77-
q   Location → page 801/11
7 -  Earth point, in front left footwell -602-
q   Location → page 801/11
8 -  Earth point, lower part of left A-pillar -44-
q   Location → page 801/11
9 -  Earth point, on top end of steering column -605-
q   from May 2007:
q   Location → page 801/12

   

León Fitting Locations No.  801 / 9
   
  610 Earth point (audio), under centre console, front -arrow-
 
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From April 2005
  43 Earth point, lower part of right A-pillar -arrow A-
  47 Earth point, in front right footwell -arrow B-
  617 Earth point 2, lower part of right A-pillar -arrow C-
 
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León Fitting Locations No.  801 / 10
   
from May 2006
  43 Earth point, lower part of right A-pillar -arrow A-
  47 Earth point, in front right footwell -arrow B-
 
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  78 Earth point, lower part of right B-pillar -arrow-
 
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León Fitting Locations No.  801 / 11
   
  77 Earth point, lower part of left B-pillar -arrow-
 
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  44 Earth point, lower part of left A-pillar -arrow A-
  602 Earth point, in front left footwell -arrow B-
 
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León Fitting Locations No.  801 / 12
   
from May 2007:
  605 Earth point, on top end of steering column -arrow-
 
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León Fitting Locations No.  801 / 13
   


SEAT LEON 2011 Overview of earth points in luggage compartment and in roof

Overview of earth points in luggage compartment and in roof
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1 -  Earth point, on right in luggage compartment -51-
q   Location → page 801/14
2 -  Earth point, on rear right of roof -666-
q   Location → page 801/14
3 -  Earth point, on rear left of roof -667-
q   Location → page 801/15
4 -  Earth point, on left in luggage compartment -50-
q   Location → page 801/15

   

León Fitting Locations No.  801 / 14
   
  51 Earth point, on right in luggage compartment -arrow-
 
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  666 Earth point, on rear right of roof -arrow-
 
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León Fitting Locations No.  801 / 15
   
  667 Earth point, on rear left of roof -arrow-
 
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  50 Earth point, on left in luggage compartment -arrow-
 
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