Seat Leon / Seat Toledo / Seat Altea / Seat Altea XL since 2004, wiring diagrams (in Russian)

Content

Wiring diagrams

Description of electrical circuits

1.4L petrol engine

Generator, starter, battery

Starter / ignition switch, cruise control switch, cruise control system, steering column control unit

Supply voltage relay 30, steering column control unit

Fuses

Fuel pump, fuel pump relay, fuel delivery relay, fuel level indicator

Control unit, control unit 4HV

Ignition coils for the first, second, third and fourth cylinders with an output stage, spark plugs, spark plug connectors, heating element for crankcase breather, 4HV control unit

Supply voltage relay 50, engine speed sensor, 4HV control unit, throttle valve module

Charcoal filter solenoid valve 1, intake air temperature sensor, intake manifold pressure sensor, 4HV control unit

Knock sensor 1, Hall sensor, coolant temperature sensor, 4HV control unit

Fuel injectors, lambda probe after catalytic converter, 4HV control unit

Lambda probe, accelerator pedal position sensor, 4HV control unit

Brake light switch, cruise control brake pedal switch, clutch sensor, 4HV control unit

Coolant temperature sensor at radiator outlet, 4HV control unit

Relay 2 supply voltage 15, control unit

Instrument cluster, diagnostic data bus

Tachometer, fuel gauge, warning lamps, low coolant sensor indicator, coolant temperature sensor, speedometer

Warning lamp, oil pressure switch, instrument panel, oil level warning lamp, oil pressure warning lamp

1.6L petrol engine

Generator, battery, starter

Starter / ignition switch, cruise control switch, cruise control system, steering column control unit

Supply voltage relay 30, steering column control unit

Fuses

Fuel pump, fuel pump relay, Simos control unit power supply relay, fuel gauge

Exhaust manifold air supply motor, exhaust manifold air supply motor relay, Simos control unit

Spark plugs, intake manifold heating element, ignition converter, Simos control unit

Supply voltage relay 50, engine speed sensor, Simos control unit, throttle valve module

Charcoal filter solenoid valve 1, intake air temperature sensor, intake manifold control valve

Knock sensor 1, Hall sensor, coolant temperature sensor, Simos control unit

Fuel injectors, lambda probe after catalytic converter, Simos control unit

Lambda probe, accelerator pedal position sensor, Simos control unit

Brake light switch, cruise control brake pedal switch, clutch sensor, Simos control unit

Coolant temperature sensor at radiator outlet, Simos control unit

Relay 2 supply voltage 15, control unit

Instrument cluster, diagnostic data bus

Tachometer, fuel gauge, warning lamps, low coolant sensor indicator, coolant temperature sensor, speedometer

Warning lamp, oil pressure switch, instrument panel, oil level warning lamp, oil pressure warning lamp

1.8 L petrol engine

generator, battery, starter, voltage regulator

Starter / ignition switch, cruise control switch, cruise control system, steering column control unit

Relay for combined ignition and injection control (Motronic), steering column control unit

Fuses

Engine relay, coolant circulation relay, ECM

Fuel pump, fuel gauge, ECM, fuel pump control unit

Mass air flow sensor, lambda probe, coolant temperature sensor at radiator outlet, intake air temperature sensor 2, electronic engine control unit

Intake manifold potentiometer flap, fuel pressure sensor, Hall sensor, air pressure sensor, electronic engine control unit

Intake air temperature sensor, coolant temperature sensor indicator, engine speed sensor, knock sensor 1, ECM

Charcoal filter solenoid valve 1, boost pressure limiting solenoid valve, intake camshaft check valve 1, ECM

Ignition coils of the first and second cylinders with an output stage, spark plugs of the first and second cylinders, spark plug connectors, electronic engine control unit

Ignition coils of the third and fourth cylinders with an output stage, spark plugs of the third and fourth cylinders, spark plug connectors, electronic engine control unit, fuel pressure regulator

First cylinder fuel injector, second cylinder fuel injector, third cylinder fuel injector, fourth cylinder fuel injector, ECM

Supply voltage relay 50, ECM, throttle valve module

Coolant pump, accelerator pedal position sensor, accelerator pedal position sensor 2, electronic engine control unit

Brake light switch, brake pedal switch, clutch sensor, ECM

Control unit, electronic engine control unit

Relay 2 supply voltage 15, control unit

Instrument cluster, diagnostic data bus

Tachometer, fuel gauge, warning lamps, low coolant sensor indicator, coolant temperature sensor, speedometer

Warning lamp, oil pressure switch, instrument panel, oil level warning lamp, oil pressure warning lamp

2.0L petrol engine

Generator, battery, starter, voltage regulator

Starter / ignition switch, cruise control switch, cruise control system, steering column control unit

Relay for combined ignition and injection control (Motronic), steering column control unit

Fuses

Relay 2 for combined ignition and injection control (Motronic), coolant circulation relay, Motronic control unit

Fuel pump, fuel gauge, fuel pump control unit, Motronic control unit

Lambda probe, lambda probe after catalytic converter, Motronic control unit

Air flow sensor, coolant temperature sensor at radiator outlet, air pressure sensor in the cylinder, Motronic control unit

Intake air temperature sensor, fuel pressure sensor, Hall sensor, Motronic control unit

Intake manifold potentiometer flap, fuel pressure sensor (low pressure), coolant temperature sensor, Motronic control unit

Knock sensor 1, knock sensor 2, engine speed sensor, Motronic control unit

Charcoal filter solenoid valve 1, boost pressure limiting solenoid valve, intake camshaft check valve 1, Motronic control unit

Ignition coils of the first and second cylinders with an output stage, spark plugs of the first and second cylinders, spark plug connectors, Motronic control unit

Ignition coils for third and fourth cylinders with output stage, spark plugs for third and fourth cylinders, spark plug connectors, Motronic control unit, fuel pressure regulator

First cylinder fuel injector, second cylinder fuel injector, third cylinder fuel injector, fourth cylinder fuel injector, Motronic control unit

Supply voltage relay 50, Motronic control unit, throttle valve module

Coolant pump, accelerator pedal position sensor, accelerator pedal position sensor 2, Motronic control unit

Brake light switch, brake pedal switch, clutch sensor, Motronic control unit

Diagnostic connector, Motronic control unit

Relay 2 supply voltage 15, control unit

Instrument cluster, diagnostic data bus

Tachometer, fuel gauge, warning lamps, low coolant sensor indicator, coolant temperature sensor, speedometer

Warning lamp, oil pressure switch, instrument panel, oil level warning lamp, oil pressure warning lamp

Diesel engine 1.9 L

Generator, battery, starter

Starter / ignition switch, cruise control switch, steering column control unit

Supply voltage relay 30, steering column control unit

Fuel pump, fuel pump relay, fuel gauge

Fuses

Engine glow plugs, bulkhead bulkhead, glow plug control unit

Supply voltage relay 50, diesel control unit

Accelerator pedal position sensor, cylinder air pressure sensor, intake air temperature sensor, diesel control unit

Engine speed sensor, Hall sensor, coolant temperature sensor, diesel control unit

Diesel control unit, unit injectors

Intake manifold flap motor, intake manifold heating element, diesel control unit

Air flow sensor, fuel temperature sensor, coolant temperature sensor at radiator outlet, diesel control unit

Brake light switch, boost pressure limiting solenoid valve, EGR valve, EGR valve

Diagnostic connector, clutch sensor, diesel control unit

Relay 2 supply voltage 15, diesel control unit

Instrument cluster, diagnostic data bus

Tachometer, fuel gauge, warning lamps, low coolant gauge indicator, speedometer

Warning lamp, oil pressure switch, instrument panel, oil level warning lamp, oil pressure warning lamp

Diesel engine 2.0 l

Generator, battery, starter

Starter / Ignition Switch, Cruise Control Switch, Steering Column Control Unit

Supply voltage relay 30, steering column control unit

Fuel pump, fuel pump relay, fuel gauge

Fuses

Engine glow plugs, bulkhead, glow plug control unit (for 103 kW engine)

Engine Glow Plugs, Bulkhead, Glow Plug Control Unit (for 125 kW engine)

Supply voltage relay 50, diesel control unit

Accelerator pedal position sensor, cylinder air pressure sensor, intake air temperature sensor, diesel control unit (for 103 kW engine)

Accelerator pedal position sensor, cylinder air pressure sensor, intake air temperature sensor, diesel control unit (for 125 kW engine)

Engine speed sensor, Hall sensor, coolant temperature sensor, diesel control unit

Diesel control unit, unit injectors (for 103 kW engine)

Diesel control unit, unit injectors (for engine power 125 kW)

Intake manifold flap motor, exhaust gas pressure sensor 1, diesel control unit

Air flow sensor, fuel temperature sensor, coolant temperature sensor at radiator outlet, diesel control unit

Exhaust gas recirculation potentiometer, lambda probe, diesel control unit, EGR valve (for 103 kW engine)

Exhaust gas recirculation potentiometer, lambda probe, diesel control unit, EGR valve (for 125 kW engine)

Temperature sensor before particle filter, temperature sensor before turbocharger, temperature sensor after particle filter (for 103 kW engine)

Temperature sensor before particle filter, temperature sensor before turbocharger, temperature sensor after particle filter (for 125 kW engine)

Brake light switch, boost pressure limiting solenoid valve, diesel control unit, EGR valve (for 103 kW engine)

Brake light switch, boost pressure limiting solenoid valve, diesel control unit, EGR valve (for 125 kW engine)

Diagnostic connector, clutch sensor, diesel control unit

Relay 2 supply voltage 15, diesel control unit

Instrument cluster, diagnostic data bus

Tachometer, fuel gauge, warning lamps, low coolant gauge indicator, speedometer

Warning lamp, oil pressure switch, instrument panel, oil level warning lamp, oil pressure warning lamp

Standard Seat

Battery, fuses, supply voltage relay 2 30, supply voltage relay 2 15, control unit

Fuses, X-pin relay, control unit

Left front headlight bulb, left and right fog light bulbs, left headlight actuator

Right headlight bulb, dimmer switch and combination instrument panel, headlight range control, right headlight actuator

Rear fog light switch, light switch, fog light switch, light switch backlight

Stop lamps, rear turn signal lamps, control unit

Windshield wiper switch, intermittent wiper switch, intermittent wiper control, steering angle sensor

Starter / ignition switch, turn signal switch, low beam and light switch (high beam), cruise control switch, speed select button

Left and right reversing lamps, left and right rear lamps, left and right rear fog lamps, license plate lighting

Turn signal lamp, windscreen wiper motor, driver and front passenger side wiper motor control unit, washer pump relay 2

Washer pump, high-end brake light, rear window defroster, rear window wiper motor, rear window defogger relay, washer pump relay 1, control unit

High frequency beep, low frequency beep, dual beep relay

Mirror switch on the rear of the sun visor, mirror illumination on the rear of the sun visor, front reading lights, interior lighting with delayed switch-off

Cigarette lighter, rear reading lights, sockets, control unit

Hazard warning light switch, reversing light switch, control unit

Ballast resistor of the supply fan with overheating protection fuse, electric motor for controlling the ventilation flap, supply fan, heater control unit

Immobilizer read coil, parking brake limit switch, brake fluid warning sensor, instrument panel, immobilizer control unit

Oil pressure switch, instrument panel, outside air temperature sensor, low coolant level warning sensor

Instrument panel, warning lamps, control unit

Instrument panel, diagnostic data bus, warning lamps

Diagnostic connector, diagnostic data bus, control unit

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