Wiring Diagram SEAT TOLEDO 2003 - Battery - starter - alternator - voltage regulator - ignition/starter switch - X contact relief relay
| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| E1 | Light switch |
| J59 | X contact relief relay |
| S162 | Fuse -1- (30), in fuse box/battery |
| S163 | Fuse -2- (30), in fuse box/battery |
| S176 | Fuse -4- (30), in fuse box/battery |
| S177 | Fuse -5- (30), in fuse box/battery |
| T2k | 2-pin connector, on engine |
| T4l | 4-pin connector, on engine |
| T6l | 6-pin connector, brown, in protective housing for connectors, on left in plenum chamber |
| 500 | Screw connection -1- (30), on relay plate |
| 501 | Screw connection -2- (30), on relay plate |
| 502 | Screw connection -1- (30a), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| * | Only models with air conditioner |
| ** | Only models with additional heater |
| *** | Only models without additional heater |
Wiring Diagram SEAT TOLEDO 2003 - Diesel direct injection system control unit - relay for glow plugs - terminal 30 voltage supply relay - accelerator pedal position sender
| G79 | Accelerator pedal position sender |
| G185 | Accelerator pedal position sender -2- |
| J52 | Glow plugs relay |
| J248 | Diesel direct injection system control unit |
| J279 | Radiator fan V7 and V35 relay, 1st speed |
| J293 | Radiator fan control unit |
| J317 | Terminal 30 voltage supply relay |
| Q6 | Glow plugs - (engine) |
| T2j | 2-pin connector, in engine compartment |
| T6l | 6-pin connector, brown, in protective housing for connectors, on left in plenum chamber |
| T10d | 10-pin connector, green, in protective housing for connectors, on left in plenum chamber |
| T10h | 10-pin connector, blue, in protective housing for connectors, on left in plenum chamber |
| 504 | Screw connection -1- (87F), on relay plate |
| A104 | Positive (+) connection -2- (15), in dash panel wiring harness |
| * | Only models with air conditioner |
| ** | Only models with Climatronic |
Wiring Diagram SEAT TOLEDO 2003 - Diesel direct injection system control unit - coolant temperature sender - engine speed sender - intake manifold pressure sender
| D | Ignition/starter switch |
| G2 | Coolant temperature sender |
| G28 | Engine speed sender |
| G62 | Coolant temperature sender |
| G71 | Intake manifold pressure sender |
| G72 | Intake manifold temperature sender |
| G80 | Needle lift sender |
| J248 | Diesel direct injection system control unit |
| S237 | Fuse in fuse box |
| T2t | 2-pin connector, on engine front |
| T3d | 3-pin connector, near intake manifold |
| T10d | 10-pin connector, green, in protective housing for connectors, on left in plenum chamber |
| T14a | 14-pin connector, in cable channel left |
| 200 | Earth connection (screening), in engine compartment wiring harness |
| A80 | Connection -1- (X), in dash panel wiring harness |
Wiring Diagram SEAT TOLEDO 2003 - Diesel direct injection system control unit - fuel temperature sender - modulating piston movement sender - fuel shut-off valve - metering adjuster
Wiring Diagram SEAT TOLEDO 2003 - Diesel direct injection system control unit - air mass meter - exhaust gas recirculation valve - charge pressure control solenoid valve
| G70 | Air mass meter |
| J104 | ABS with EDL control unit |
| J248 | Diesel direct injection system control unit |
| N18 | Exhaust gas recirculation valve |
| N75 | Charge pressure control solenoid valve |
| N108 | Commencement of injection valve |
| N239 | Intake manifold flap change-over valve |
| S234 | Fuse in fuse box |
| T6l | 6-pin connector, brown, in protective housing for connectors, on left in plenum chamber |
| T10d | 10-pin connector, green, in protective housing for connectors, on left in plenum chamber |
| T10y | 10-pin connector, on engine front |
| T14a | 14-pin connector, in cable channel left |
| A100 | Connection -2- (87), in dash panel wiring harness |
| E30 | Connection (87a), in engine wiring harness |
Wiring Diagram SEAT TOLEDO 2003 - Diesel direct injection system control unit - cruise control system switch - cruise control system (CCS) button (Set) - brake light switch - clutch pedal switch
| E45 | Cruise control system switch |
| E227 | Cruise control system (CCS) button (Set) |
| F | Brake light switch |
| F36 | Clutch pedal switch |
| F47 | Cruise control system brake pedal switch (diesel direct injection system) |
| J248 | Diesel direct injection system control unit |
| M21 | Brake and tail light bulb, left |
| S13 | Fuse in fuse box/relay plate |
| T10d | 10-pin connector, green, in protective housing for connectors, on left in plenum chamber |
| T10e | 10-pin connector, black, in protective housing for connectors, on left in plenum chamber |
| T10s | 10-pin connector, next to steering column right |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| B131 | Connection (54), in interior wiring harness |
| W1 | Positive (+) connection -1- (54), in rear wiring harness |
Wiring Diagram SEAT TOLEDO 2003 - Diesel direct injection system control unit - low heat output relay - high heat output relay - coolant heating elements
| J248 | Diesel direct injection system control unit |
| J359 | Low heat output relay |
| J360 | High heat output relay |
| N79 | Heater element (crankcase breather) |
| Q7 | Coolant heating elements |
| T6l | 6-pin connector, brown, in protective housing for connectors, on left in plenum chamber |
| T6n | 6-pin connector |
| T9a | 9-pin connector |
| T10 | 10-pin connector, orange, in protective housing for connectors, on left in plenum chamber |
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| 131 | Earth connection -2-, in engine compartment wiring harness |
| D50 | Positive (+) connection (30), in engine compartment wiring harness |
| D74 | Connection (86), in engine compartment wiring harness |
| D98 | Connection (glow plugs), in engine compartment wiring harness |
| D111 | Connection -9-, in engine compartment wiring harness |
| * | Only models with additional heater |
Wiring Diagram SEAT TOLEDO 2003 - Fuel gauge sender - coolant shortage indicator sender
Wiring Diagram SEAT TOLEDO 2003 - Control unit with display in dash panel insert - oil pressure switch - speedometer sender - oil level/oil temperature sender
| F1 | Oil pressure switch |
| F4 | Reversing light switch |
| G22 | Speedometer sender |
| G266 | Oil level/oil temperature sender |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp |
| K28 | Coolant temperature warning lamp/coolant shortage warning lamp |
| K83 | Exhaust emissions warning lamp |
| S7 | Fuse in fuse box/relay plate |
| T10 | 10-pin connector, orange, in protective housing for connectors, on left in plenum chamber |
| T14a | 14-pin connector, in cable channel left |
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| 85 | Earth connection -1-, in engine compartment wiring harness |
| B163 | Positive (+) connection -1- (15), in interior wiring harness |
| * | Only models with maintenance intermittent extension |
| ** | Wire W for self-diagnosis |
| *** | Only models without maintenance intermittent extension |
Wiring Diagram SEAT TOLEDO 2003 - Control unit with display in dash panel insert - multi-function display - multi-function display call-up button - multi-function display - memory switch
| E86 | Multi-function display call-up button |
| E109 | Multi-function display, memory switch |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter |
| G21 | Speedometer |
| J119 | Multi-function display |
| J255 | Climatronic control unit |
| J285 | Control unit with display in dash panel insert |
| K29 | Glow period warning lamp |
| K105 | Reserve fuel warning lamp |
| T6d | 6-pin connector |
| T12d | 12-pin connector, on Climatronic |
| A27 | Connection (speed signal), in dash panel wiring harness |
| * | Only models with multi-function display |
SEAT TOLEDO 2003 Overview of relay
Overview of relay | | | SEAT TOLEDO 2003 Relay on relay plate
Relay on relay plate | | 1 - | Dual tone horn relay -J4- (53) |
| 2 - | X-contact relief relay -J59- (100) |
| 4 - | Fuel pump relay -J17- (409) |
| - | Glow plug relay -J52- (103) |
| V y Vl - | Automatic intermittent wash and wipe relay -J31- |
| - | with rain sensor, with/without headlight washer system (192) |
| - | without rain sensor, with headlight washer system (389) |
| - | without rain sensor, without headlight washer system (377) |
| | SEAT TOLEDO 2003 Relay on the 13 position additional relay carrier above the relay plate
Relay on the 13 position additional relay carrier above the relay plate | | 10 - | Fuel pump relay (turbo diesel engine unit injectors) (167) -J17- (up to October 2002) |
| - | Fuel pump relay (TDI-PD) (53) (from November 2002) |
| 11 - | Automatic gearbox relay AG4 -J60- (175) |
| 12 - | Terminal 30 voltage supply relay -J317- (109) |
| 13 - | Radiator fan relay (53) |
| | | Right-handdrive vehicles: | | 6 - | Telephone switch-over relay | | 7 - | Radiator fan relay -J26- (53) | | 8 - | Terminal 30 voltage supply relay (109) | | 9 - | Automatic gearbox relay AG4 -J60- (175) | | 10 - | Fuel pump relay (turbo diesel engine unit injectors)-J17- (167) (up to October 2002) | | - | Fuel pump relay (TDI-PD) (53) (from November 2002) | | 12 - | Cigarette lighter relay Australia -J193- (53) | | | |
SEAT TOLEDO 2003 Glow plug activation control unit:
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