A guide to the combined VX220/Speedster wiring diagram PDF (model year 2003): the 14 diagrams, how to read them and follow a circuit across pages, the wire colour codes and earth points, and a lookup of every component code, relay and fuse and the diagram it appears on.
An owner called Rally combined the separate wiring diagram PDFs from the Speedster Club Netherlands technical library into one 23-page PDF, so a circuit is easier to follow from page to page. The diagrams are headed "Speedster/VX220, model year 2003" and cover both the Z20LET (Turbo) and Z22SE (NA) engines. This page doesn't reproduce the diagrams. It explains what is in the PDF and how to use it, and lists every component code so you can find the right page. The PDF itself is in the Facebook post linked in Sources, and the original diagrams are in the manuals on the Speedster Club Netherlands site, linked from the guides page. You will still need the manual to see where components sit in the car.
The diagrams are for model year 2003 cars. We don't know how far other years differ, so check a circuit on the car before relying on a wire colour or fuse number. See
Relays and fuses (NA) for where the relays and fuses are.
The 14 diagrams
The grid on the bottom of each diagram starts at its number times 100: the first diagram's grid starts at 100, the second at 200, and so on.
| Diagram | Grid starts | What it covers |
|---|
| 1 | 100 | Battery, alternator, voltage distribution I, ignition switch, fuses I |
| 2 | 200 | Voltage distribution II, fuses II |
| 3 | 300 | Side lights, front lamps |
| 4 | 400 | Hazards, reversing lamp switch, stop lamp switch, fog lamp switch |
| 5 | 500 | Front fog lamps, rear lamps |
| 6 | 600 | Wiper, washer, cigarette lighter, interior lamp, heater blower |
| 7 | 700 | Instrument panel |
| 8 | 800 | Z20LET (Turbo) engine management I |
| 9 | 900 | Z20LET (Turbo) engine management II |
| 10 | 1000 | Z22SE (NA) engine management I |
| 11 | 1100 | Z22SE (NA) engine management II, fuel cut-off, fuel pump, radiator fan |
| 12 | 1200 | Radio, ABS |
| 13 | 1300 | Central locking, anti-theft warning system |
| 14 | 1400 | Horn, airbag, seatbelt pretensioner, immobiliser, seatbelt telltale |
After the 14 diagrams there are five index pages: components, systems, wiring colours, grounding points and abbreviations. The component index is reproduced below.
How to read them
- A circuit runs from the battery positive terminal to the negative terminal through an earth (grounding) point. On each page the wiring generally runs from top to bottom.
- Most circuits run over more than one page. Where a wire carries on, it ends in a box with a number. That number is a grid reference along the bottom of the diagram, and tells you where to pick the wire up.
- Components are labelled with a code in larger letters, and the system they belong to in smaller letters.
- Each wire is marked with its colour code, which may be a single colour or a base colour with a stripe, and its size in mm².
Worked example (from the PDF). To trace the airbag circuit, start on the first page at the battery (G1). Follow wire 30 through the main fuse (FL1) to the ignition switch (S1), then along wire 15 to a box marked 1418. On diagram 14, find the box at the top of grid line 1418, which is marked 130 to show where the circuit came from. It carries on down to the airbag control unit (A1) and ends at grounding point 5.
Wire colours
| BK | Black | OG | Orange |
| BN | Brown | PK | Pink |
| BU | Blue | RD | Red |
| GN | Green | VT | Violet |
| GY | Gray | WH | White |
| LGN | Light green | YE | Yellow |
Grounding (earth) points
- 1: chassis, front
- 2: battery
- 3: engine
- 4: engine
- 5: chassis, rear
Voltage labels
On the diagrams, wire 30 is constant (battery) voltage and wire 15 is ignition-switched voltage.
Component codes
The code on the diagram, what it is, and the diagram number(s) it appears on. Use your browser's find to search it. The wheel speed sensors B25 to B28 are the ones in the ABS sensor cable guide, and the central locking parts are covered in Central locking and alarm overview.
A: Control units and radio
| Code | Component | Diagram |
|---|
| A1 | Control unit - Airbag | 14 |
| A2 | Control unit - Anti-lock Brake System | 12 |
| A4 | Control unit – Multec (Z22SE) | 10,11 |
| A5 | Control unit – Motronic (Z20LET) | 8,9 |
| A12 | Control unit - Central locking | 13 |
| A13 | Control unit - Anti-theft warning system | 13 |
| A14 | Radio | 12 |
| A17 | Control unit - Immobilizer | 14 |
B: Sensors, switches, loudspeakers and horn
| Code | Component | Diagram |
|---|
| B1 | Switch - Brake fluid | 7 |
| B2 | Switch - Parking brake | 7 |
| B3 | Switch - Oil pressure Instrument | 7 |
| B6 | Switch - Minimum capacity, coolant | 7 |
| B12 | Sensor - Coolant temperature | 10 |
| B13 | Sensor - Temperature, intake air | 10 |
| B19 | Sensor - Pedal position | 9,10 |
| B21 | Sensor - Absolute pressure, intake manifold | 8,10 |
| B25 | Sensor - Wheel speed, front, left | 12 |
| B26 | Sensor - Wheel speed, front, right | 12 |
| B27 | Sensor - Wheel speed, rear, left | 12 |
| B28 | Sensor - Wheel speed, rear, right | 12 |
| B30 | Sensor - Knock control 1 | 9,10 |
| B34 | Impulse sensor - Crankshaft | 8,10 |
| B35 | Sensor - Camshaft | 8 |
| B36 | Loudspeaker - Front, left | 12 |
| B37 | Loudspeaker - Front, right | 12 |
| B38 | Loudspeaker - Rear, left | 12 |
| B39 | Loudspeaker - Rear, right | 12 |
| B46 | Air mass meter | 8 |
| B48 | Power sounder - Anti-theft warning system | 13 |
| B51 | Trumpet horn | 14 |
| B61 | Sensor - Coolant temperature (gauge) | 8 |
| B110 | Sensor - Atmospheric pressure | 9 |
| B117 | Sensor - Oxygen, mixture control, heated | 8,11 |
| B118 | Sensor - Oxygen, catalytic converter check | 8,11 |
| B121 | Sensor - Anti-theft warning unit, passenger compartment | 13 |
C: Condenser
| Code | Component | Diagram |
|---|
| C1 | Condenser - Ignition coil | 8,10 |
E: Lamps
| Code | Component | Diagram |
|---|
| E3 | Rear lamp unit - Left | 5 |
| E3.1 | Tail lamp - Left | 5 |
| E3.2 | Stop lamp - Left | 5 |
| E3.3 | Reversing lamp - Left | 5 |
| E3.4 | Turn signal lamp - Rear, left | 5 |
| E3.5 | Fog lamp - Rear, left | 5 |
| E4 | Rear lamp unit - Right | 5 |
| E4.1 | Tail lamp - Right | 5 |
| E4.2 | Stop lamp - Right | 5 |
| E4.3 | Reversing lamp - Right | 5 |
| E4.4 | Turn signal - Rear, right | 5 |
| E4.5 | Fog lamp - Rear, right | 5 |
| E10 | Lamp - Licence plate, left | 5 |
| E11 | Lamp - Licence plate, right | 5 |
| E18 | Fog lamp - Front, left | 5 |
| E19 | Fog lamp - Front, right | 5 |
| E22 | Headlamp - Left | 3 |
| E22.1 | Headlamp - Left - low beam | 3 |
| E22.2 | Headlamp - Left - high beam | 3 |
| E22.3 | Headlamp - Left - turn signal lamp | 3 |
| E22.4 | Headlamp - Left - parking lamp | 3 |
| E23 | Headlamp - Right | 3 |
| E23.1 | Headlamp - Right - low beam | 3 |
| E23.2 | Headlamp - Right - high beam | 3 |
| E23.3 | Headlamp - Right - turn signal lamp | 3 |
| E23.4 | Headlamp - Right - parking lamp | 3 |
| E24 | Stop lamp - Centre position | 4 |
| E39 | Lamp - Passenger compartment | 6 |
F: Fuses and main fuses (FB, FL, FR)
| Code | Component | Diagram |
|---|
| FB1 | Fuse – Fog lamps | 4 |
| FB2 | Fuse – Anti theft warning system | 1 |
| FB3 | Fuse – Heater blower | 1 |
| FB4 | Fuse – Windscreen wiper | 1 |
| FB5 | Fuse – Reverse lamp/Stop lamps | 1 |
| FB6 | Fuse – Hazard lamps | 1 |
| FB7 | Fuse – Engine | 1 |
| FB8 | Fuse – Instruments | 2 |
| FB9 | Fuse – Hazard lamps | 2 |
| FB10 | Fuse – Horn | 2 |
| FB11 | Fuse – Interior Lamp | 2 |
| FB12 | Fuse – Engine cooling | 2 |
| FB13 | Fuse – Central door locking | 2 |
| FB14 | Fuse – Front lamps | 2 |
| FB15 | Fuse – Radio | 2 |
| FB16 | Fuse – side lights left | 3 |
| FB17 | Fuse – side lights right | 3 |
| FB19 | Fuse – light switch | 2 |
| FB20 | Fuse – Engine (Z20LET) | 1 |
| FB21 | Fuse – Front fog lamps | 2 |
| FB22 | Fuse – ABS | 1 |
| FL1 | Main fuse Start & Charging Voltage distribution Ignition switch | 1 |
| FL3 | Main fuse Voltage distribution ABS | 2 |
| FL4 | Main fuse Voltage distribution Engine | 2 |
| FR1 | Fuse – Cigarette lighter | 2 |
| FR2 | Fuse – fuel pump | 11 |
| FR3 | Fuse – Additional engine cooling (Z20LET) | 2 |
| FR4 | Fuse – central locking | 13 |
G: Battery and alternator
| Code | Component | Diagram |
|---|
| G1 | Battery Start & Charging/Voltage distribution | 1 |
| G2 | Alternator Start & Charging/Voltage distribution | 1 |
| G5 | Battery - Back-up power, central door locking | 13 |
H: Instrument and warning lights
| Code | Component | Diagram |
|---|
| H1 | Instrument | 7 |
| H1.1 | Charging indicator lamp | 7 |
| H1.2 | Telltale - Oil pressure | 7 |
| H1.4 | Telltale - Airbag | 7 |
| H1.5 | Telltale - Anti-lock Brake System | 7 |
| H1.6 | Telltale - Engine | 7 |
| H1.12 | Telltale - High beam | 7 |
| H1.17 | Telltale - Brake system | 7 |
| H1.19 | Telltale - Turn signal lamp | 7 |
| H1.20 | Illumination - LCD display | 7 |
| H1.21 | Illumination - Instrument | 7 |
| H1.22 | Indicator - Coolant temperature | 7 |
| H1.23 | Fuel indicator | 7 |
| H1.24 | Tachometer | 7 |
| H1.25 | Speedometer - Electronic | 7 |
| H1.65 | Warning buzzer | 7 |
| H1.68 | Telltale - Parking brake | 7 |
| H1.69 | Telltale - Coolant level | 7 |
| H1.76 | Telltale - Gear shift up/Anti-theft warning system | 7 |
| H6 | Turn signal lamp - Side, left | 4 |
| H7 | Turn signal lamp - Side, right | 4 |
| H11 | Indicator - Anti-theft warning system | 13 |
| H22 | Telltale - Seat belt warning | 14 |
K: Relays
| Code | Component | Diagram |
|---|
| K2 | Relay - High beam | 3 |
| K4 | Relay - Fog lamp, front | 5 |
| K5 | Relay - Fog lamp, rear | 4 |
| K10 | Relay - Wiper, windscreen (Stage 1/Interval) | 6 |
| K12 | Relay - Trumpet horn | 14 |
| K13 | Relay - Radiator fan | 11 |
| K16 | Relay - Fuel pump | 9,10 |
| K18 | Relay - Engine control unit | 9,10 |
| K19 | Relay - Low beam | 3 |
| K20 | Relay - Parking lamp | 3 |
| K24 | Relay - Starter Start & Charging/Voltage distribution | 1 |
| K31 | Flasher unit | 4 |
| K82 | Relay - Pump, coolant additional | 9 |
| K103 | Relay - Impact, unlock doors | 11 |
| K104 | Relay - Back-up power, central door locking | 13 |
M: Motors and pumps
| Code | Component | Diagram |
|---|
| M1 | Starter Start & Charging/Voltage distribution | 1 |
| M2 | Motor - Central locking, driver door | 13 |
| M3 | Motor - Central locking, front passenger door | 13 |
| M12 | Motor - Blower, passenger compartment | 6 |
| M16 | Motor - Wiper, windscreen | 6 |
| M19 | Motor - Radiator fan | 11 |
| M21 | Pump - Fuel | 11 |
| M26 | Pump - Washer, windscreen | 6 |
| M55 | Pump - Coolant, additional | 9 |
P: Fuel tank sensor
| Code | Component | Diagram |
|---|
| P5 | Sensor - Fuel tank content | 7 |
R: Airbag and pretensioner squibs, lighter, resistor
| Code | Component | Diagram |
|---|
| R1 | Squib - Airbag, driver | 14 |
| R5 | Squib - Belt pretensioner, driver | 14 |
| R6 | Squib - Belt pretensioner, front passenger | 14 |
| R10 | Cigarette lighter | 6 |
| R11 | Preresistor - Blower, heating | 6 |
S: Switches
| Code | Component | Diagram |
|---|
| S1 | Switch - Starter Start & Charging Voltage distribution | 1 |
| S2 | Switch unit - Light | 3 |
| S3 | Switch unit - Steering column | 3 |
| S3.1 | Switch - High beam | 3 |
| S3.2 | Switch - Turn signal | 3 |
| S3.3 | Switch - Headlamp flash | 3 |
| S4 | Switch - Parking lamp | 3 |
| S6 | Switch - Hazard light | 4 |
| S16 | Switch - Engine hood, anti-theft warning system | 13 |
| S22 | Switch - Wiper unit | 6 |
| S22.1 | Switch - Wiper, windscreen | 6 |
| S22.2 | Switch - Washer, windscreen | 6 |
| S24 | Switch - Trumpet horn | 14 |
| S28 | Switch - Clutch Pedal | 4 |
| S29 | Switch - Stop lamp, single | 4 |
| S31 | Switch - Reversing lamp | 4 |
| S37 | Switch - Seat belt | 14 |
| S38 | Contact switch - Driver door | 6 |
| S39 | Contact switch - Front passenger door | 6 |
| S43 | Switch - Stop lamp, double | 4 |
| S69 | Switch - Blower, heating | 6 |
| S76 | Switch - Fog lamps, front | 5 |
| S87 | Switch - Central locking (instrument) | 13 |
| S94 | Impact switch - Fuel cut off | 11 |
| S122 | Switch - Fog lamps, rear | 4 |
| S124 | Switch - Starter button Start & Charging Voltage distribution | 1 |
| S125 | Switch - Illumination/Reset trip odometer | 7 |
| S126 | Switch - Front bonnet, anti-theft warning system | 13 |
| S143 | Switch - Back-up power, central door locking | 13 |
T: Ignition coil
| Code | Component | Diagram |
|---|
| T1 | Ignition coil - Direct ignition | 8,10 |
V: Diode
| Code | Component | Diagram |
|---|
| V25 | Diode - Back-up power | 2 |
W: Contact unit and radio antenna
| Code | Component | Diagram |
|---|
| W1 | Contact unit | 14 |
| W6 | Antenna - Radio | 12 |
X: Connectors and harness joins
| Code | Component | Diagram |
|---|
| X1 | Main harness & Battery positive Start & Charging/Voltage distribution | 1,2 |
| X2 | Main harness & Extension harness, engine | 8,9,10 |
| X3 | Main harness & Extension harness, engine | 1,7,8,9,10 |
| X4 | Main harness & Extension harness, engine Start & Charging/Voltage distribution | 1 |
| X5 | Main harness & Rear Licence plate lamps/Tail lamps | 5 |
| X6 | Main harness & Rear (Fog lamp) | 5 |
| X7 | Main harness & Rear (Reversing lamp) | 5 |
| X8 | Main harness & Extension harness, boot switch | 13 |
| X10 | Main harness & Interior fan | 6 |
| X12 | Main harness & Roll hoop Radio/Stop lamp switch | 4,12 |
| X13 | Diagnostic link Diagnostic link | 2 |
| X14 | Main harness & Driver door | 13 |
| X15 | Main harness & Front passenger door | 13 |
| X17 | Main harness & Switch unit - Steering column High beam/Low beam | 3 |
| X18 | Main harness & Switch unit - Steering column High beam/Low beam | 3 |
| X19 | Contact unit & Switch - Trumpet horn | 14 |
| X20 | Main harness & Contact unit | 14 |
| X21 | Extension harness, engine & Control unit – Multec (Z22SE) | 10 |
| X22 | Engine & Control unit – Multec (Z22SE) | 10,11 |
| X23 | Main harness & Control unit - Anti-theft warning system | 13 |
| X24 | Main harness & Control unit - Anti-theft warning system | 13 |
| X25 | Main harness & Extension harness, contact switch - Driver door | 6 |
| X26 | Main harness & Extension harness, contact switch - Passenger door | 6 |
| X30 | Fuel tank & Fuel pump/sensor Fuel pump/sensor Instrument | 7,11 |
| X31 | Extension harness, engine & Control unit – Motronic (Z20LET) | 8,9 |
| X32 | Engine & Control unit - Motronic (Z20LET) | 8,9 |
| X33 | Extension harness, engine & Engine | 8,9,10 |
| X34 | Extension harness, engine Instrument/Start & Charging/Voltage distribution | 1,7,9 |
| X35 | Main harness & Engine Engine Z20LET | 8 |
| X36 | Main harness & Engine Engine Z20LET | 8 |
| X37 | Main harness & Engine Engine Z20LET | 9 |
| X38 | Extension harness, engine & Engine | 10 |
| X40 | Main harness & Roll hoop | 12 |
| X41 | Main harness & Extension harness, fog lamp, front left | 5 |
| X42 | Main harness & Extension harness, fog lamp, front right | 5 |
Y: Valves, injectors and throttle positioners
| Code | Component | Diagram |
|---|
| Y2 | Actuator - Recirculation | 9 |
| Y4 | Solenoid valve - Exhaust gas recirculation | 10 |
| Y5 | Solenoid valve - Tank ventilation Engine | 9,11 |
| Y8 | Solenoid valve - Boost pressure regulation | 8 |
| Y9.1 | Injection valve - Cylinder 1 | 9,10 |
| Y9.2 | Injection valve - Cylinder 2 | 9,10 |
| Y9.3 | Injection valve - Cylinder 3 | 9,10 |
| Y9.4 | Injection valve - Cylinder 4 | 9,10 |
| Y11 | Throttle valve – Positioner (Z20LET) | 9 |
| Y29 | Throttle valve – Positioner (Z22SE) | 11 |
Systems codes
These are the system labels in the smaller letters on the diagrams.
| ABS | Anti-lock Brake System | HOR | Trumpet horn |
| AIR | Airbag | IMMO | Immobiliser |
| ATWU | Anti-theft warning system | INS | Instrument |
| BRAKE | Stop lamp switch | IRL | Interior lights |
| CIG | Cigarette lighter | KEY_CDL | Key-less entry, central door locking |
| CLUTCH | Clutch switch | LISW | Light switch |
| DCS | Door contact switch | LPL | Licence plate lamps |
| EC | Engine cooling | RADIO | Radio |
| ENGZ20LET | Engine Z20LET | SB | Seat belt switch |
| ENGZ22SE | Engine Z22SE | SBUL | Switch, reversing lamp |
| FCO | Fuel cut-off | STA+CHA | Start and charging |
| FI-PU | Fuel pump | TL-L | Tail lamp, left |
| FOG-F | Fog lamps, front | TL-R | Tail lamp, right |
| FOG-R | Fog lamps, rear | TURN | Turn signal lamps |
| HEAT | Heating | VOLT | Voltage distribution |
| HI-B | High beam | WA-F | Windscreen washer |
| | WI-F | Windscreen wiper |
Help wanted
We don't know which model years these diagrams match beyond 2003, or whether later cars changed wiring colours or fuse positions. If you have a diagram for another year, or have found a mistake in these, please tell us. We also haven't reproduced the abbreviations page, which uses codes such as DWA, ZV and KSP.
Send us details or photos →
