Before you begin diagnosing a failure of any circuit, check the condition of the fuses and circuit breakers that protect it (if the latter are provided). Make sure the battery is fully charged and check the quality of the contact connections of the wires coming from its terminals (see Chapter Vehicle settings and routine maintenance).
When searching for a failure of a specific circuit, first of all also check the quality of the contact connections of its electrical wiring. When disconnecting electrical connectors, try to pull only by their housings, and in no case by the wiring harness.
Abbreviations in electrical circuit diagrams
| "00 | Models since 2000. |
| "99 | Model 1999. |
| 30R | 30-pin |
| 40R | 40-pin |
| AB | Airbag |
| ABS | Anti-lock brake system |
| AC | Air conditioner |
| ASP | Outside mirror |
| AT | Automatic transmission |
| AUS | Models for Australia |
| CRP | Car phone |
| D | Diesel engine |
| DIAG | Diagnostic connector |
| DID | 2-function information display |
| DS | Anti-theft system |
| DT | Turbodiesel |
| DWA | Anti-theft alarm |
| DZM | Tachometer |
| EMP | Radio |
| EPS | Electric power steering |
| FF | Horn |
| FH | Window lifter |
| FI | Petrol |
| GB | UK Models |
| GPS | Global Positioning System (navigation system) |
| HB | Hatchback |
| HKL | Power steering |
| HS | Tailgate glass |
| HSH | Rear window heating |
| HZG | Heating |
| ID | Information display (TID/DID) |
| IMO | Engine immobilizer system |
| INS | Device |
| IP | Instrument panel |
| IRL | Interior lighting |
| KAT | Catalytic converter |
| KSP | Fuel pump |
| LED | LED |
| LHD | Left hand drive |
| LSW | Light switch |
| LWR | Adjusting the light range |
| MK | Engine cooling |
| MT | Manual transmission (MT) |
| NAV | Navigation system |
| NB | Stepped back |
| NSL | Rear fog light |
| NSW | Fog light |
| OEL | Oil pressure sensor |
| P/N | Park/Neutral (AT) position |
| PBSL | Parking/Brake Protection Circuit |
| PBV | Combo model |
| RFS | Reversing light |
| RHD | Right hand drive |
| SAB | Side airbag |
| SD | Sliding roof panel |
| SH | Seat heating |
| SL | Brake lights |
| SLP | Additional air supply |
| SM | Engine Control Module (ECM) |
| SRA | Headlight Lens Cleaner |
| TD | Turbodiesel |
| TEL | Telephone |
| TFL | Daytime running lights (DRL) |
| TID | 3-function information display |
| TIG | Model Tigra |
| TKS | D/V open door |
| TL | Direction indicators |
| TLS | Turn signal switch |
| WEG | Signal from the wheel sensor of the ABS system |
| WL | Alarm |
| WS | Emergency alarm siren |
| ZV | Single lock |
Designations on electrical equipment diagrams
|
Electrical wiring insulation colors |
|
| BK | Black |
| BN | Brown |
| BU | Blue |
| DBU | Dark blue |
| DGN | Dark green |
| GN | Green |
| GY | Grey |
| LBU | Light blue |
| LGN | Light green |
| OC | Ocher |
| OG | Orange |
| PK | Pink |
| PU | Purple |
| RD | Red |
| VT | Violet |
| WH | White |
| YE | Yellow |
|
Ground connection points |
|
|
1
|
Engine compartment bulkhead, right |
|
2
|
Engine compartment bulkhead, left |
|
3
|
Engine, right |
|
5
|
Engine, left |
|
7
|
Tunnel |
|
8
|
Right A-pillar |
|
10
|
Rear of the body |
|
11
|
Rear door and tailgate |
|
Electrical appliances |
|
| E1 | Left parking light |
| E2 | Left rear light |
| E3 | License plate light |
| E3.1 | Left license plate light |
| E3.2 | Right license plate light |
| E4 | Right parking light |
| E5 | Right rear light |
| E7 | Left high beam lamp |
| E8 | Right high beam lamp |
| E9 | Left low beam lamp |
| E10 | Right low beam lamp |
| E13 | Luggage compartment lighting |
| E14 | Interior lighting |
| E16 | Cigarette lighter illumination lamp |
| E17 | Left reversing light |
| E18 | Reversing light right |
| E19 | Rear window heating |
| E25 | Front left seat heating |
| E30 | Front right seat heating |
| E60 | Rear window heating left |
| E61 | Rear window heating right |
| E88 | Rear personal lighting |
| Fx | Fuse |
| H1 | Radio |
| H2 | Sound signal |
| H6 | Emergency signaling K/L |
| H11 | Left front turn signal |
| H12 | Left rear turn signal |
| H13 | Right front turn signal |
| H14 | Right rear turn signal |
| H19 | Warning buzzer for headlights on |
| H33 | Left turn signal repeater |
| H34 | Right turn signal repeater |
| H37 | Front left speaker |
| H38 | Front right speaker |
| H39 | Rear left speaker |
| H40 | Rear right speaker |
| H52 | Front left tweeter |
| H53 | Front Right HF Speaker |
| H56 | Phone microphone |
| H64 | Warning buzzer for key in ignition |
| K1 | Rear window heating relay |
| K8 | Windscreen wiper interval relay |
| K10 | Direction indicator unit |
| K12 | Additional air supply relay |
| K18 | Horn relay |
| K30 | Rear window wiper interval relay |
| K35 | Rear window and outside mirror heating time delay relay |
| K37 | Single Lock Control Unit |
| K43 | Injector relay |
| K44 | Fuel pump relay |
| K57 | MulTec control unit |
| K58 | Fuel pump relay |
| K59 | DRL relay |
| K61 | Electric motor of the control unit |
| K70 | Diesel Engine ECM |
| K73 | High beam relay |
| K76 | Preheating control unit |
| K77 | Glow Plug Relay |
| K80 | Fuel filter heating relay |
| K97 | Headlight Washer Time Delay Relay |
| K141 | EPS control unit |
| L2 | DIS ignition coil |
| M2 | Windshield wiper motor |
| M3 | Electric heater fan motor |
| M4 | Radiator Fan Electric Motor |
| M8 | Rear window wiper motor |
| M15 | Electric motor for front passenger door window lift |
| M18 | Electric motor for single lock drive, driver's door |
| M19 | Electric motor for single lock drive, rear left door |
| M20 | Electric motor for single lock drive, rear right door |
| M21 | Fuel pump |
| M24 | Headlight lens washer pump |
| M27 | Additional air supply pump |
| M30 | Driver's side exterior mirror |
| M31 | Outside mirror on the front passenger side |
| M32 | Electric motor for single lock drive, front passenger door |
| M39 | Electric motor for adjusting the beam distance of the left headlight |
| M40 | Electric motor for adjusting the beam distance of the right headlight |
| M41 | Electric motor for single lock drive, fuel tank cap |
| M47 | Driver's door window lifter electric motor |
| M55 | Washer pump (front and back) |
| M60 | Electric motor for single lock drive, trunk lid |
| M61 | Electric motor for sliding roof panel |
| M66 | Idle speed control drive |
| M79 | Power steering motor |
| P13 | Outside temperature sensor |
| P23 | Absolute pressure sensor |
| P29 | IAT sensor |
| P30 | D/V coolant temperature |
| P32 | Lambda probe |
| P33 | Lambda probe |
| P34 | Throttle potentiometer |
| P35 | CKP sensor |
| P44 | MAF |
| P46 | KS 1 |
| P47 | CMP sensor |
| P60 | Anti-theft alarm sensor in the cabin |
| P70 | Engine speed sensor |
| P77 | Torque sensor |
| P88 | Adjustment lever position sensor |
| R3 | Cigarette lighter |
| R5 | Glow plugs |
| R19 | Additional radiator fan resistor |
| S2 | Light switch |
| S2.1 | Light switch |
| S2.2 | Rheostat for regulating instrument lighting |
| S2.4 | Interior light switch |
| S3 | Heater Fan Switch |
| S3.1 | Heater Fan Switch |
| S3.2 | Rear window defroster switch |
| S5 | Signal switch |
| S5.2 | Low beam switch |
| S5.3 | Turn signal switch |
| S6 | Instrument panel and front part of the body |
| S7 | Reverse light switch |
| S9 | Windscreen wiper switch |
| S9.1 | Windscreen wiper switch |
| S9.2 | Windshield wiper and washer switch |
| S15 | Light switch in the luggage compartment |
| S17 | Front passenger door open switch |
| S29 | D/V coolant temperature |
| S30 | Front left seat heating switch |
| S31 | Rear left door open switch |
| S32 | Rear right door open switch |
| S39 | Driver's door switch block |
| S39.1 | Window lift switch, driver's door |
| S39.2 | Window switch, front passenger door |
| S41 | Electric motor for single lock drive, driver's door |
| S42 | Single lock switch, front passenger door |
| S47 | Driver's door open switch |
| S52 | Hazard warning switch |
| S55 | Front right seat heating switch |
| S57 | Sliding roof panel switch |
| S64 | Horn switch |
| S68 | Outside mirror control switch |
| S68.1 | Outside mirror adjustment switch |
| S68.2 | Left and right outside mirror switch |
| S68.3 | Outside Mirror Heating Switch |
| S71 | Glass jam switch, front passenger door |
| S78 | Window switch, front passenger door |
| S88 | D/V coolant temperature |
| S98 | Light range adjustment switch |
| S114 | D/V coolant temperature |
| S121 | Temperature Lever Limit Switch |
| S127 | Single lock switch, tailgate |
| U12 | Fuel filter heating |
| U12.1 | Temperature sensor switch |
| U12.2 | Heater resistor |
| U15 | TID |
| U16 | Graphic information display |
| U18 | Roof Antenna Booster, Rear Window |
| U29 | Transformer |
| U33 | Multi-information display |
| V3 | Anti-theft alarm LED |
| X3 | Jumper plug without K8 |
| X4 | Instrument panel and engine |
| X5 | Instrument panel and engine |
| X6 | Instrument panel and front part of the body |
| X7 | Instrument panel and rear end |
| X9 | Dashboard and telephone |
| X10 | Engine and injectors |
| X11 | Front body and headlight washer pump |
| X16 | Rear of the body and tailgate |
| X18 | Rear of the body and rear left door |
| X19 | Rear of the body and rear right door |
| X20 | Rear of the body and driver's door |
| X21 | Rear of the body and front passenger door |
| X22 | Rear end and personal lighting |
| X25 | Driver's door and driver's door window switch |
| X37 | Rear body and fuel tank |
| X38 | Rear of the body and rear right door |
| X39 | Rear of the body and rear left door |
| X40 | Rear of the body and tailgate on the right |
| X41 | Instrument panel and engine |
| X43 | Instrument panel and engine |
| X47 | Rear body and fuel tank |
| X48 | Driver's door and front passenger's window switch |
| X49 | Front passenger door and window switch |
| X50 | EPS Instrument Panel and Power Supply |
| X51 | EPS control unit and steering wheel tilt sensor |
| X56 | Instrument cluster and EPS control unit |
| X61 | Rear body part and left seat block |
| X61.3 | Driver's seat and seat heating |
| X62 | Rear body part and seat block right |
| X62.3 | Front passenger seat and seat heating |
| X66 | Engine and ECM |
| X67 | Engine and ECM |
| X68 | Instrument panel and control unit for heating and air conditioning |
| X81 | MulTec Engine and Control Unit |
| X82 | MulTec Engine and Control Unit |
| X83 | Tailgate and heated rear window |
| X84 | Tailgate and heated rear window |
| X85 | Engine and fuel filter heating |
| X86 | Engine and fuel filter heating |
| X87 | Instrument panel and engine |
| X99 | Radiator Fan Diagnostic Connector |
| X106 | Rear of the body and tailgate on the right |
| Y7 | Injector |
| Y7.1 | Cylinder 1 injector |
| Y7.2 | Injector cylinder 2 |
| Y7.3 | Injector cylinder 3 |
| Y7.4 | Cylinder 4 injector |
| Y14 | Coolant solenoid valve |
| Y15 | Additional air supply solenoid valve |
| Y18 | EGR system solenoid valve |
| Y26 | Stepper motor throttle valve |
| Y34 | EVAP system solenoid valve |
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