Wiring Diagram SEAT LEON 2002 - ABS with EDL - TCS and ESP control unit - TCS/ESP button - traction control switch illumination
| A | Battery |
| D | Ignition/starter switch |
| E256 | TCS/ESP button |
| F | Brake light switch |
| J104 | ABS with EDL TCS and ESP control unit |
| L71 | Traction control switch illumination |
| S9 | Fuse in fuse box/relay plate |
| S178 | Fuse -6- (30), in fuse box/battery |
| S179 | Fuse -7- (30), in fuse box/battery |
| T3 | 3-pin connector, on battery |
| T47 | 47-pin connector |
| |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A38 | Positive (+) connection -2- (15a), in dash panel wiring harness |
| A132 | Connection (TCS/ESP), in dash panel wiring harness |
| W1 | Positive (+) connection -1- (54), in rear wiring harness |
| * | Only models with ESP |
| ** | Only models with ASR |
Wiring Diagram SEAT LEON 2002 - Control unit for ABS with EDS - ASR and ESP - steering angle sender - ABS inlet valve - rear right
| G85 | Steering angle sender |
| J... | Engine control units |
| J104 | Control unit for ABS with EDS, ASR and ESP |
| J217 | Automatic gearbox control unit |
| N133 | ABS inlet valve, rear right |
| N134 | ABS inlet valve, rear left |
| N135 | ABS outlet valve, rear right |
| N134 | ABS outlet valve, rear left |
| T6o | 6-way connector, beside the steering column |
| T10d | 10-way connector, green, in the connector's protective casing, plenum chamber, left |
| T47 | 47-way connector |
| T68 | 68-way connector |
| A121 | Connection (High-Bus), instrument panel wiring harness |
| A122 | Connection (Low-Bus), instrument panel wiring harness |
| * | Only vehicles with an automatic gearbox |
| ** | Only vehicles with four wheel drive |
Wiring Diagram SEAT LEON 2002 - Control unit for ABS with EDS - ASR and ESP - front right wheel revolution sensor - front left wheel revolution sensor
| G45 | Front right wheel revolution sensor |
| G47 | Front left wheel revolution sensor |
| J104 | Control unit for ABS with EDS, ASR and ESP |
| N99 | ABS inlet valve, front right |
| N100 | ABS outlet valve, front right |
| N101 | ABS inlet valve, front left |
| N102 | ABS outlet valve, front left |
| N227 | High pressure valve -1- electronic stability programme |
| N228 | Low pressure valve -2- electronic stability programme |
| T2d | 2-way connector, ABS sensor, front left |
| T2e | 2-way connector, ABS sensor, front right |
| T47 | 47-way connector |
| |
| * | Only vehicles with brake pad wear |
Wiring Diagram SEAT LEON 2002 - ABS with EDL TCS and ESP control unit - rear right speed sensor - rear left speed sensor
| G44 | Rear right speed sensor |
| G46 | Rear left speed sensor |
| G200 | Lateral acceleration sender |
| G202 | Yaw rate sender |
| G214 | Brake pressure sender -2- |
| J104 | ABS with EDL TCS and ESP control unit |
| N225 | Electronic stability program switch valve -1- |
| N226 | Electronic stability program switch valve -2- |
| V64 | ABS hydraulic pump |
| T2f | 2-pin connector, on ABS sensor rear left |
| T2g | 2-pin connector, on ABS sensor rear right |
| T47 | 47-pin connector |
| D146 | Connection (rear left speed sensor +), in engine compartment wiring harness |
| D147 | Connection (rear left speed sensor -), in engine compartment wiring harness |
| D148 | Connection (rear right speed sensor +), in engine compartment wiring harness |
| 149 | Connection (rear right speed sensor -), in engine compartment wiring harness |
| J3 | Connection -1-, in ABS wiring harness |
| J5 | Connection -2-, in ABS wiring harness |
Wiring Diagram SEAT LEON 2002 - Control unit for ABS with EDS - ASR and ESP - longitudinal acceleration sender
| G251 | Longitudinal acceleration sender |
| J104 | Control unit for ABS with EDS, ASR and ESP |
| J503 | Control unit with display for radio and navigation |
| T16 | 16-way connector, self-diagnosis |
| T26 | 26-way connector |
| T47 | 47-way connector |
| A76 | Connection (diagnosis cable K), instrument panel wiring harness |
| 133 | Connection (ABS impulses, left), instrument panel wiring harness |
| 134 | Connection (ABS impulses, right), instrument panel wiring harness |
| * | Only on vehicles with Navigation system |
| ** | Only vehicles with four wheel drive |
Wiring Diagram SEAT LEON 2002 - Control unit with warning lamps on the instrument panel - handbrake control switch - brake fluid level switch - trailer operation warning lamp
| E3 | Emergency flasher switch |
| F9 | Handbrake control switch |
| F34 | Brake fluid level switch |
| J217 | Automatic gearbox control unit |
| J285 | Control unit with warning lamps on instrument panel |
| K18 | Trailer operation warning lamp |
| K47 | ABS warning lamp |
| K118 | Brake system indicator light |
| S15 | Fuses in fuse holder/relay plate |
| T7 | 7-way connector, central console |
| T10g | 10-way connector, grey, in the connector's protective casing, plenum chamber, left |
| T68 | 68-way connector |
| |
| 176 | Earth connection, right hand headlamp wiring harness |
| 179 | Earth connection, right hand side headlamp wiring harness |
| 501 | Bolted joint -2- (30), on the relay plate |
| A52 | Positive connection -2- (30), in instrument panel wiring harness |
| A76 | Connection (diagnosis cable K), instrument panel wiring harness |
| A115 | Connection (handbrake control), instrument panel wiring harness |
| * | Only vehicles with an automatic gearbox |
Wiring Diagram SEAT LEON 2002 - Control unit with warnig lamps on the instrument panel - brake lining/pad wear sender - front left - brake pad/lining warning lamp
| G34 | Brake lining/pad wear sender, front left |
| J... | Engine control units |
| J255 | Climatronic control unit |
| J285 | Control unit with warning lamps on instrument panel |
| K32 | Brake pad/lining warning lamp |
| K155 | Stability program warning lamp |
| T10 | 10-way connector, orange, in the connector's protective casing, plenum chamber, left |
| T12d | 12-way connector, climatronic unit |
| T20a | 20-way connector, climatronic unit |
| T32a | 32-way connector, green, instrument panel |
| |
| 81 | Earth connection -1-, instrument panel wiring harness |
| 135 | Earth connection -2-, instrument panel wiring harness |
| D53 | Connection (brake pad wear indicator, right) engine bay wiring harness |
| D54 | Connection (brake pad wear indicator, right) engine bay wiring harness |
| * | Only vehicles with brake pad wear |
SEAT LEON 2002 Overview of fuses
Overview of fuses | | | | 3 - | Fuse on fuse holder -S162-, -S163-, -S164-, -S176-, -S177-, -S178-, -S179-, -S180-, next to battery |
| q | Location, up to August 2000: |
| q | Location, from September 2000: |
SEAT LEON 2002 Position of fuses in fuse holder, left dash panel
Position of fuses in fuse holder, left dash panel | | No. | | Current Flow Diagram designation | Nominal value | | Function/component | Terminal |
| 1 | - | -S1- | 10A | - | Glove compartment light, heated washer jets | |
| 2 | - | -S2- | 10A | - | Turn signals | |
| 3 | - | -S3- | 5A | - | Side light warning lamp | |
| 4 | - | -S4- | 5A | - | Number plate light | |
| 5 | - | -S5- | 7.5A | - | Number plate light | |
| 6 | - | -S6- | 5A | - | Electric folding exterior mirror and window regulator (applicable up to October 2001)
Convenience system central control unit (applicable from November 2001) | |
| 7 | - | -S7- | 10A | - | Reversing light | |
| 8 | - | -S8- | 5A | - | Telephone | |
| 9 | - | -S9- | 5A | - | ABS/ESP/HALDEX | |
| 10 | - | -S10- | 10A | - | Petrol engine control unit (applicable up to October 2001)
Diesel engine control unit (applicable up to October 2001)
- S-contact (applicable from November 2001) | |
| 11 | - | -S11- | 5A | - | Dash panel insert | |
| 12 | - | -S12- | 7.5A | - | Diagnosis voltage | |
| 13 | - | -S13- | 10A | - | Brake lights | |
| 14 | - | -S14- | 10A | - | Interior light | |
| 15 | - | -S15- | 5A | - | Dash panel insert, steering angle sender | |
| 16 | - | -S16- | 10A | - | Compressor | |
SEAT LEON 2002 Position of fuses in fuse holder, left dash panel
| Toledo/León | Fitting Locations | No. 802 / 5 | | | Toledo/León | Fitting Locations | No. 802 / 6 | | | Toledo/León | Fitting Locations | No. 802 / 7 | | | Auxiliary fuse above additional relay carrier | | A - | Seat adjustment fuse -S45- (30 A) | | B - | Vacuum pump fuse (20 A) | | C - | Window regulator fuse -S37- (30 A) | | D - | Fuel charging hole fuse -S323- (10 A) | | E - | Alarm horn fuse -S111- (15 A) | | - | Turn signal fuse -S144- (15 A) | | | | | A - | Seat adjustment fuse -S45- (30 A) | | B - | Vacuum pump fuse (20 A) | | C - | Window regulator fuse -S37- (30 A) | | F - | Alarm horn fuse 1 -S111- (15 A) | | - | Turn signal fuse -S144- (15 A) | | G - | Fuel charging hole fuse -S323- (10 A) | | | | SEAT LEON 2002 Fuse on fuse holder, next to battery (up to August 2000): | Fuse on fuse holder, next to battery (up to August 2000): | | S162 - | Glow plug heater 50 A | | S163 - | Engine control unit 50 A | | S176 - | Passenger compartment, 110A | | S177 - | Alternator (90 A), 110 A | | - | Alternator (120 A), 150 A | | | | SEAT LEON 2002 Fuse on fuse holder, next to battery (from September 2000): | | 
