Seat Leon 2013 to 2020 - Service Repair Manual - Wiring Diagrams

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SEAT LEON (2013-2020) - WORKSHOP, SERVICE, REPAIR MANUAL - WIRING DIAGRAMS

- English Service Manual and Wiring Diagrams, for cars Seat Leon 2013 to 2020.
 

CONTENTS:

SERVICE MANUAL

1.0 l direct injection
- 00 – Technical data
- 1 Safety information
- 2 Identification
- 3 Repair instructions
- 10 – Removing and installing engine
- 1 Removing and installing engine
- 2 Assembly mountings
- 13 – Crankshaft group
- 1 Cylinder block (pulley end)
- 2 Cylinder block, gearbox end
- 3 Crankshaft
- 4 Pistons and conrods
- 15 – Cylinder head, valve gear
- 1 Cylinder head
- 2 Toothed belt drive
- 3 Valve gear
- 4 Inlet and exhaust valves
- 17 – Lubrication
- 1 Sump, oil pump
- 2 Engine oil cooler
- 3 Crankcase ventilation
- 4 Oil filter, oil pressure switch
- 19 – Cooling
- 1 Cooling system/coolant
- 2 Coolant pump, regulation of cooling system
- 3 Coolant pipes
- 4 Radiator, radiator fan
- 21 – Turbocharging/supercharging
- 1 Turbocharger
- 2 Charge air system
- 24 – Mixture preparation - injection
- 1 Injection system
- 2 Injectors
- 3 Air filter
- 4 Intake manifold
- 5 Sensors
- 6 Engine (motor) control unit
- 7 High-pressure pump
- 8 Lambda probe
- 26 – Exhaust system
- 1 Exhaust pipes, silencers
- 2 Exhaust gas cleaning
- 28 – Ignition system
- 1 Ignition system

1.2 l direct injection
- 00 – Technical data
- 1 Identification
- 2 Safety instructions
- 3 Repair instructions
- 10 – Removing and installing engine
- 1 Removing and positioning the engine
- 2 Assembly mountings
- 13 – Crankshaft group
- 1 Cylinder block (pulley end)
- 2 Cylinder block, gearbox end
- 3 Crankshaft
- 4 Pistons and conrods
- 15 – Cylinder head, valve gear
- 1 Cylinder head
- 2 Toothed belt drive
- 3 Valve control
- 4 Inlet and exhaust valves
- 17 – Lubrication
- 1 Sump, oil pump
- 2 Engine oil radiator
- 3 Crankcase breather system
- 4 Oil filter/oil pressure switches
- 19 – Cooling
- 1 Cooling system/coolant
- 2 Coolant pump/thermostat assembly
- 3 Coolant pipes
- 4 Radiator/radiator fans
- 21 – Turbocharging/supercharging
- 1 Turbocharger
- 2 Supercharger air system:
- 24 – Mixture preparation - injection
- 1 Injection system
- 2 Injectors
- 3 Air filter
- 4 Intake manifold
- 5 Sensors
- 6 Engine control unit
- 7 High-pressure pump
- 8 Lambda probe
- 26 – Exhaust system
- 1 Exhaust pipes/silencers
- 2 Emission control
- 28 – Ignition system
- 1 Ignition system

1.4 l direct injection
- 00 – Technical data
- 1 Identification
- 2 Safety instructions
- 3 Repair instructions
- 10 – Removing and installing engine
- 1 Removing and positioning the engine
- 2 Assembly mountings
- 13 – Crankshaft group
- 1 Cylinder block (pulley end)
- 2 Cylinder block, gearbox end
- 3 Crankshaft
- 4 Pistons and conrods
- 15 – Cylinder head, valve gear
- 1 Cylinder head
- 2 Toothed belt drive
- 3 Valve control
- 4 Inlet and exhaust valves
- 17 – Lubrication
- 1 Sump, oil pump
- 2 Engine oil radiator
- 3 Crankcase breather system
- 4 Oil filter/oil pressure switches
- 19 – Cooling
- 1 Cooling system/coolant
- 2 Coolant pump/thermostat assembly
- 3 Coolant pipes
- 4 Radiator/radiator fans
- 21 – Turbocharging/supercharging
- 1 Turbocharger
- 2 Supercharger air system:
- 24 – Mixture preparation - injection
- 1 Injection system
- 2 Injectors
- 3 Air filter
- 4 Intake manifold
- 5 Sensors
- 6 Engine control unit
- 7 High-pressure pump
- 8 Lambda probe
- 26 – Exhaust system
- 1 Exhaust pipes/silencers
- 2 Emission control
- 28 – Ignition system
- 1 Ignition system

1.5 l direct injection
- 00 – Technical data
- 1 Safety information
- 2 Identification
- 3 Repair notes
- 10 – Removing and installing engine
- 1 Removing and installing engine
- 2 Assembly mountings
- 3 Engine cover panel
- 13 – Crankshaft group
- 1 Cylinder block (pulley end)
- 2 Cylinder block, gearbox end
- 3 Crankshaft
- 4 Pistons and conrods
- 15 – Cylinder head, valve gear
- 1 Cylinder head
- 2 Toothed belt drive
- 3 Valve gear
- 4 Inlet and exhaust valves
- 17 – Lubrication
- 1 Sump, oil pump
- 2 Engine oil cooler
- 3 Crankcase ventilation
- 4 Oil filter, oil pressure switch
- 19 – Cooling
- 1 Cooling system/coolant
- 2 Coolant pump, regulation of cooling system
- 3 Coolant pipes
- 4 Radiator, radiator fan
- 21 – Turbocharging/supercharging
- 1 Exhaust turbocharger
- 2 Charge air system
- 24 – Mixture preparation - injection
- 1 Injection system
- 2 Air filter
- 3 Intake manifold
- 4 Injectors
- 5 Sensors
- 6 High-pressure pump
- 7 Lambda probe
- 8 Engine/motor control unit
- 26 – Exhaust system
- 1 Exhaust pipes and silencers
- 2 Exhaust gas cleaning
- 28 – Ignition system
- 1 Ignition system

1.6 l and 2.0 l 4V, TDI
- 00 – Technical data
- 1 Safety instructions
- 2 Identification
- 3 Repair notes
- 10 – Removing and installing engine
- 1 Removing and installing the engine
- 2 Engine/gearbox mountings
- 3 Engine cover
- 13 – Crankshaft group
- 1 Cylinder block (pulley end)
- 2 Cylinder block, gearbox end
- 3 Crankshaft
- 4 Pistons and conrods
- 15 – Cylinder head, valve gear
- 1 Cylinder head
- 2 Toothed belt drive
- 3 Valve gear
- 4 Inlet and exhaust valves
- 17 – Lubrication
- 1 Sump, oil pump
- 2 Engine oil radiator
- 3 Oil filter, oil pressure switch
- 19 – Cooling
- 1 Cooling system/coolant
- 2 Coolant pump/coolant thermostat
- 3 Coolant pipes
- 4 Radiator/radiator fans
- 21 – Turbocharging/supercharging
- 1 Exhaust turbocharger
- 2 Supercharger air system:
- 23 – Mixture preparation - injection
- 1 Injection system
- 2 Vacuum system
- 3 Injectors/high-pressure accumulator (rail)
- 4 Air cleaner
- 5 Suction pipe
- 6 Sensors
- 7 Engine control unit
- 8 High-pressure pump
- 9 Lambda sensor
- 26 – Exhaust system
- 1 Exhaust pipes/silencers
- 2 Emission control
- 3 Exhaust gas temperature control
- 4 Exhaust gas recirculation
- 28 – Glow plug system
- 1 Glow plug system

1.6 l MPI, 4 V, EA211
- 00 – Technical data
- 1 Identification
- 2 Safety instructions
- 3 Repair instructions
- 10 – Removing and installing engine
- 1 Removing and installing the engine
- 2 Assembly mountings
- 13 – Crankshaft group
- 1 Cylinder block (pulley end)
- 2 Cylinder block, gearbox end
- 3 Crankshaft
- 4 Pistons and conrods
- 15 – Cylinder head, valve gear
- 1 Cylinder head
- 2 Toothed belt drive
- 3 Valve gear
- 4 Inlet and exhaust valves
- 17 – Lubrication
- 1 Sump, oil pump
- 2 Engine oil radiator
- 3 Crankcase breather system
- 4 Oil filter/oil pressure switches
- 19 – Cooling
- 1 Cooling system/coolant
- 2 Coolant pump/thermostat assembly
- 3 Coolant pipes
- 4 Radiator/radiator fans
- 24 – Mixture preparation - injection
- 1 Injection system
- 2 Injectors
- 3 Air cleaner
- 4 Suction hose
- 5 Sensors
- 6 Engine control unit
- 7 Lambda probe
- 26 – Exhaust system
- 1 Exhaust pipes/silencers
- 2 Emission control
- 28 – Ignition system
- 1 Ignition system

2.0 l with direct injection, 4 V,
- 00 – Technical data
- 1 Safety information
- 2 Identification
- 3 Repair notes
- 10 – Removing and installing engine
- 1 Removing and installing engine
- 2 Assembly mountings
- 3 Motor cover
- 13 – Crankshaft group
- 1 Cylinder block (pulley end)
- 2 Cylinder block, gearbox end
- 3 Crankshaft
- 4 Balancer shaft
- 5 Pistons and conrods
- 15 – Cylinder head, valve gear
- 1 Cylinder head
- 2 Timing chain cover
- 3 Chain drive
- 4 Valve gear
- 5 Inlet and exhaust valves
- 17 – Lubrication
- 1 Sump, oil pump
- 2 Engine oil cooler
- 3 Crankcase ventilation
- 4 Oil filter, oil pressure switch
- 19 – Cooling
- 1 Cooling system/coolant
- 2 Coolant pump/thermostat assembly
- 3 Coolant pipes
- 4 Radiator, radiator fan
- 21 – Turbocharging/supercharging
- 1 Exhaust turbocharger
- 2 Charge air system
- 24 – Mixture preparation - injection
- 1 Injection system
- 2 Injectors
- 3 Air filter
- 4 Intake manifold
- 5 Senders and sensors
- 6 Engine (motor) control unit
- 7 High-pressure pump
- 8 Lambda probe
- 26 – Exhaust system
- 1 Exhaust pipes, silencers
- 2 Exhaust gas cleaning
- 3 Exhaust gas temperature regulation
- 28 – Ignition system
- 1 Ignition system

5-speed manual gearbox 0AH
- 00 – Technical data
- 1 Identification
- 2 Safety instructions
- 3 Repair instructions
- 4 Technical data
- 5 Overview of the drive force
- 6 Electrical components
- 30 – Clutch
- 1 Clutch mechanism
- 2 Clutch
- 34 – Controls, housing
- 1 Selector mechanism
- 2 Gearbox: removing and installing
- 3 Assembly mountings
- 4 Transport of gearbox
- 5 Gearbox: disassembly and assembly
- 6 Gearbox housing, clutch housing
- 7 Installing to engine and gearbox support
- 8 Gear oil
- 35 – Gears, shafts
- 1 Input shaft
- 2 Secondary shaft
- 39 – Final drive - differential
- 1 Sealing rings
- 2 Differential:

7-speed dual clutch gearbox 0CW
- 00 – Technical data
- 1 Identification
- 2 Safety instructions
- 3 Repair notes
- 4 Technical data
- 5 Overview - power transmission
- 30 – Clutch
- 1 Clutch action
- 2 Coupling unit
- 34 – Controls, housing
- 1 Mechatronic unit
- 2 Gear selection mechanism
- 3 Gearbox : removing and fitting
- 4 Engine/gearbox mountings
- 5 Transporting gearbox
- 6 Dismantling and assembling gearbox
- 7 Gearbox housing, clutch housing
- 8 Installing to engine and gearbox support
- 9 Gearbox oil
- 35 – Gears, shafts
- 1 Drive shaft
- 2 Output shaft
- 3 Parking Lock
- 39 – Final drive - front differential
- 1 Oil seals

Body Repairs
- 00 – Technical data
- 1 Basic instructions
- 2 Security standards
- 3 Specific model data
- 4 Labels
- 5 Bodywork tolerances
- 6 Dimensions
- 7 Body elements made from ultra high strength steel
- 8 Laser welding, MIG welding and MIG brazing welding (CuSi3)
- 9 Adhesive
- 10 Products for corrosion protection and noise insulation
- 11 Reshaping work, access zones
- 12 Inspection areas of bodywork depending on the type of collision
- 13 Platform repairs
- 14 Check points for the platform
- 50 – Body - front
- 1 Breakdown of spare parts
- 2 Engine console - engine bracket: replacement, partial
- 3 Upper outer sill: replace, complete part
- 4 Upper outer sill: replace, part
- 5 Upper inner sill: replace
- 6 Front wheel housing: replace, complete part
- 7 Replace front wheel housing panel, partial
- 8 Longitudinal beam cover plate: replacement, complete part
- 9 Front longitudinal member: replacement, complete part
- 10 Front sill: replacement, partial
- 11 Front right sill: replace, part
- 12 Sill end: replace, complete part
- 13 Repair the thread for securing the subframe
- 51 – Body - centre
- 1 Breakdown of spare parts
- 2 Breakdown of spare parts (Panoramic roof)
- 3 Roof: replace, complete part
- 4 Panoramic roof: replace, complete part
- 5 Front roof crossbeam: replace, complete part
- 6 Replace front cross member, replace panoramic roof, full part
- 7 Central roof beam: replace, complete part
- 8 Rear roof crossbeam: replace, complete part
- 9 Roof member: replace
- 10 Hinge pillar: replace, complete part
- 11 Reinforcement of the hinge pillar: replace, complete part
- 12 Centre B-pillar: replace, complete part
- 13 Reinforcement centre B-pillar: replace, complete part
- 14 Lower outer sill: replace, complete part
- 15 Lower outer sill: replace, part
- 16 Lower inner sill: replace, complete part
- 17 Lower inner sill: replace, part
- 18 Replacing the longitudinal member external seat guide
- 19 Seat guide crossbeam: replace, complete part
- 20 Replace longitudinal member inner seat guide
- 53 – Body - rear
- 1 Breakdown of spare parts
- 2 End plate: replace, complete part
- 3 Reception plate: replace, complete part
- 4 Reception plate: replacement, partial
- 5 Replace extension rear side panel
- 6 Water drainage canal: replacement, partial
- 7 End crossbeam: replace, complete part
- 8 Replace extension side of luggage compartment floor
- 9 Luggage compartment floor: replace, complete part
- 10 Replace luggage compartment floor, full part (Version CNG)
- 11 Rear sill: replace, part
- 12 Replace rear longitudinal member extension
- 13 Replace rear sill end section
- 14 Replace rear side flank, full part
- 15 Replace rear inner side flank, full part
- 16 Replace rear inner side flank, partial
- 17 Rear outer wheel housing: replace, complete part

Electrical system
- 00 – Technical data
- 1 Safety instructions
- 2 Repair notes
- 3 Battery:
- 27 – Starter, current supply, CCS
- 1 Battery:
- 2 Alternator
- 3 Starter:
- 4 Start-Stop System
- 5 Adaptive cruise control
- 90 – Gauges, instruments
- 1 Instrument cluster
- 2 Horn
- 92 – Windscreen wash/wipe system
- 1 Windscreen wiper
- 2 Windscreen washer
- 3 Rear window wiper system
- 4 Rear window washer system
- 5 Headlamp washers
- 6 Washer fluid hoses
- 94 – Lights, bulbs, switches - exterior
- 1 Headlamps
- 2 Fog lights
- 3 Lights in exterior mirror
- 4 Tail lights
- 5 Additional brake lights
- 6 Number plate light
- 7 Switch module of the steering column
- 8 Parking aid
- 9 Entry and start authorisation
- 10 Automatic headlight range control
- 11 Towing bracket
- 12 Soundaktor
- 96 – Lights, bulbs, switches - interior
- 1 Lights
- 2 Controls
- 3 Anti-theft alarm system
- 4 Immobiliser
- 5 Lane change assist
- 6 Front camera for assist systems
- 7 Cigarette lighter, socket
- 97 – Wiring
- 1 Relay carrier, fuse holder, E-boxes
- 2 Control units
- 3 Connectors
- 4 Repairing aerial wires
- 5 Vehicle diagnostic, testing and information systems

Fuel supply system, petrol engines
- 00 – Technical data
- 1 Safety instructions
- 2 Identification
- 3 General notes
- 4 Repair notes
- 20 – Fuel supply system
- 1 Fuel tank
- 2 Fuel supply unit / fuel supply sender
- 3 Sensors
- 4 Quick-release couplings
- 5 Fuel filter
- 6 Activated charcoal filter system:
- 7 Accelerator control
- 8 Fuel pump

Heating and air conditioning
- 00 – Technical data
- 1 Identification
- 2 General notes
- 3 Safety instructions
- 4 Repair notes
- 5 Technical data
- 80 – Heating
- 1 Fitting location overview - heating
- 2 Heater unit
- 3 Servomotors
- 4 Air deflector
- 5 Control and display unit
- 6 Other control components
- 87 – Air conditioning system
- 1 Fitting location overview - air conditioning system
- 2 Refrigerant circuit
- 3 Air conditioning compressor
- 4 Servomotors
- 5 Front heater and air conditioning unit
- 6 Air deflector
- 7 Control and display unit
- 8 Other control components

Running gear, axles, steering
- 00 – Technical data
- 1 Safety instructions
- 2 Repair instructions
- 3 Appraisal of accident vehicles
- 4 Disposal
- 40 – Front suspension
- 1 Front axle
- 2 Sub-frame
- 3 Suspension strut, upper suspension link
- 4 Lower suspension link, swivel joint
- 5 Wheel bearing unit
- 6 Drive shaft
- 42 – Rear suspension
- 1 Rear axle
- 2 Axle beam
- 3 Sub-frame
- 4 Anti-roll bar
- 5 Suspension link, track rod
- 6 Suspension strut, shock absorber, spring
- 7 Wheel bearing, trailing arm
- 8 Drive shaft
- 43 – Self-levelling suspension
- 1 Electronic damping control
- 2 Vehicle level sender
- 44 – Wheels, tyres, vehicle geometry
- 1 Wheel rims and tyres
- 2 Tyre pressure monitoring system
- 3 Wheel alignment
- 4 Rough running due to wheels/tyres - causes and rectification
- 5 Adaptive cruise control
- 6 Front camera for driver assist systems
- 48 – Steering
- 1 Steering wheel
- 2 Steering column
- 3 Steering box
- 4 Sensors

ELECTRICAL WIRING DIAGRAMS