Contents Wiring diagrams Section: Electrical Component Locations All sections

Electrical Component Locator: Other Volkswagen Jetta IV

BUZZERS, RELAYS & TIMERS

ComponentComponent Location
Coolant Preheating Relay (High Heat Output) (1.9L)Left rear corner of engine compartment.
Coolant Preheating Relay (Low Heat Output) (1.9L)Left rear corner of engine compartment.
Daytime Running Lights Changeover Relay (2)On thirteenfold auxiliary relay panel. (Схема №4)
Dual Horn RelayOn relay panel. (Схема №4)
Foglight RelayOn thirteenfold auxiliary relay panel. (Схема №4)
Fuel Pump (FP) RelayOn relay panel. (Схема №4)
Glow Plug RelayOn thirteenfold auxiliary relay panel. (Схема №4)
Load Reduction RelayOn relay panel. (Схема №4)
Park/Neutral Position (PNP) RelayOn thirteenfold auxiliary relay panel. (Схема №4)
Power Supply RelayOn thirteenfold auxiliary relay panel. (Схема №4)
Rear Lid Motor Remote Unlock RelayOn thirteenfold auxiliary relay panel. (Схема №4)
Secondary Air Injection (AIR) Pump RelayAt left side of engine compartment, behind air cleaner housing.
Starter Locking Relay (Clutch Pedal Switch)On thirteenfold auxiliary relay panel. (Схема №4)
Wiper Washer Intermittent Relay (2)On relay panel. (Схема №4)

BUZZERS, RELAYS & TIMERS LOCATION

CIRCUIT PROTECTION DEVICES

ComponentComponent Location
Fuse/Bracket BatteryBehind battery.
Fuse PanelBehind left side of dash.
Relay PanelUnder left side of dash.
Thirteenfold Auxiliary Relay PanelUnder left side of dash.

CIRCUIT PROTECTION DEVICES LOCATION

CONTROL UNITS

ComponentComponent Location
ABS Control ModuleAt left side of engine compartment.
Air Bag Control ModuleBeneath center of dash, on central tunnel.
Comfort System Central Control ModuleBehind left side of dash.
Coolant Fan Control ModuleOn left front of engine compartment.
Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) (1.9L)At base of windshield, in center of plenum. (Схема №1)
Door Control Module (2-Door) (2)Integral with window regulator motor, in respective door.
Door Control Module (4-Door) (4)Integral with window regulator motor, in respective door.
Motronic Engine Control Module (ECM) (1.8L)At base of windshield, in center of plenum.
Motronic Engine Control Module (ECM) (2.0L)At base of windshield, in center of plenum. (Схема №2)
Motronic Engine Control Module (ECM) (2.8L)At base of windshield, in center of plenum. (Схема №3)
Power Sun Roof Control ModuleBehind front interior light.
Throttle Valve Control Module (1.8L)On throttle body. (Схема №5)
Throttle Valve Control Module (2.0L)On throttle body. (Схема №2)
Throttle Valve Control Module (2.8L)On throttle body. (Схема №3)
Transmission Control Module (TCM) (1.8L)At base of windshield, in right side of plenum. (Схема №6)
Transmission Control Module (TCM) (1.9L)At base of windshield, in right side of plenum. (Схема №1)
Transmission Control Module (TCM) (2.0L)At base of windshield, in right side of plenum. (Схема №2)
Transmission Control Module (TCM) (2.8L)At base of windshield, in right side of plenum. (Схема №3)

CONTROL UNITS LOCATION

MOTORS

ComponentComponent Location
ABS Hydraulic PumpIntegral with ABS control module.
After-Run Coolant Pump (2.8L)On right rear of cylinder head. (Схема №3)
Fresh Air BlowerBehind right side of dash, on HVAC housing.
Fresh/Recirculating Air Door MotorOn right corner of HVAC housing.
Fuel Pump (FP)In fuel tank, under rear seat.
Fuel Tank Lid Unlock MotorOn right side of luggage compartment, behind carpet.
Leak Detection PumpIn right rear wheelhouse, near fuel filler tube.
Secondary Air Injection (AIR) Pump Motor (2.0L)On left rear side of engine.
Secondary Air Injection (AIR) Pump Motor (2.8L)On left side of engine, near generator.
Throttle Drive (1.8L)Integral with throttle valve control module.
Throttle Position (TP) Actuator (2.0L)Integral with throttle valve control module, on throttle body.
Throttle Position (TP) Actuator (2.8L)Integral with throttle valve control module, on throttle body.

MOTORS LOCATION

SENDING UNITS & SENSORS

ComponentComponent Location
ABS Wheel Speed Sensor (4)On respective hub/spindle assembly.
Accelerator Pedal Position Sensors 1 & 2 (Late Production 2.0L)In pedal assembly.
Accelerator Pedal Position Sensors 1 & 2 (1.8L)In pedal assembly. (Схема №15)
Accelerator Pedal Position Sensors 1 & 2 (2.8L)In pedal assembly.
Barometric Pressure (BARO) Sensor (1.8L)In control module housing, in left rear corner of engine compartment.
Camshaft Position (CMP) Sensor (1.8L)On front of cylinder head, behind camshaft timing belt cover. (Схема №7)
Camshaft Position (CMP) Sensor (2.0L)On cylinder head, behind camshaft sprocket. (Схема №2)
Camshaft Position (CMP) Sensor (2.8L)On rear of cylinder head, behind ignition coil. (Схема №3)
Engine Coolant Level (ECL) SensorOn engine coolant reservoir.
Engine Coolant Temperature (ECT) Sensor (1.8L)On rear of cylinder head. (Схема №8)
Engine Coolant Temperature (ECT) Sensor (1.9L)On cylinder head, in coolant flange. (Схема №1)
Engine Coolant Temperature (ECT) Sensor (2.0L)On cylinder head, in coolant flange. (Схема №2)
Engine Coolant Temperature (ECT) Sensor (2.8L)On left rear of cylinder head, on coolant flange. (Схема №3)
Engine Oil Temperature Sensor (1.8L)On left side of engine, on oil filter housing.
Engine Speed (RPM) Sensor (1.8L)On left rear of cylinder block, behind oil filter. (Схема №9)
Engine Speed (RPM) Sensor (1.9L)On left side of engine block, near transmission flange. (Схема №1)
Engine Speed (RPM) Sensor (2.0L)On left side of engine block, near transmission flange. (Схема №2)
Engine Speed (RPM) Sensor (2.8L)On lower left rear of engine, near transmission flange. (Схема №3)
Fuel Gauge SenderIn fuel tank.
Fuel Temperature Sensor (1.9L)At left side of engine, on front of diesel DFI pump. (Схема №1)
Heated Oxygen Sensor (HO2S) (1.8L)In catalytic converter inlet, near turbocharger. (Схема №10)
Heated Oxygen Sensor (HO2S) (2.0L)Ahead of three-way catalytic converter.
Heated Oxygen Sensor (HO2S) (2.0L)Behind three-way catalytic converter.
Heated Oxygen Sensor (HO2S) (2.8L)Ahead of three-way catalytic converter.
Intake Air Temperature (IAT) Sensor (1.8L)On intake manifold, behind throttle body. (Схема №11)
Intake Air Temperature (IAT) Sensor (1.9L)Integral to manifold absolute pressure sensor.
Intake Air Temperature (IAT) Sensor (2.0L)Integral to mass airflow sensor.
Knock Sensor (KS) No. 1 (1.8L)On left front of engine block. (Схема №12)
Knock Sensor (KS) No. 1 (2.0L)On left front side of engine block. (Схема №2)
Knock Sensor (KS) No. 1 (2.8L)On lower right side of engine, below exhaust manifold.
Knock Sensor (KS) No. 2 (1.8L)On left rear of engine block. (Схема №13)
Knock Sensor (KS) No. 2 (2.0L)On left side of engine block, behind ignition coil.
Knock Sensor (KS) No. 2 (2.8L)On lower left side of engine, above oil cooler.
Manifold Absolute Pressure (MAP) Sensor (1.9L)Between charge air cooler and intake manifold, in intake air duct. (Схема №1)
Mass Airflow (MAF) Sensor (1.8L)Inside air cleaner housing.
Mass Airflow (MAF) Sensor (1.9L)At right of air cleaner housing, in intake air duct. (Схема №1)
Mass Airflow (MAF) Sensor (2.0L)At right of air cleaner housing, in intake air duct. (Схема №2)
Mass Airflow (MAF) Sensor (2.8L)Between air cleaner housing and throttle body. (Схема №3)
Modulating Piston Displacement Sensor (1.9L)Integral with fuel temperature sensor, on injection pump.
Needle Lift Sensor (1.9L)On left side of cylinder head. (Схема №1)
Oxygen Sensor (O2S) (Behind TWC) (1.8L)Behind catalytic converter.
Oxygen Sensor (O2S) Behind TWC (2.0L)At back of three-way catalytic converter.
Oxygen Sensor (O2S) Behind TWC (2.8L)At back of three-way catalytic converter.
Side Air Bag Crash Sensor (Left)Under driver's seat, beneath carpet.
Side Air Bag Crash Sensor (Right)Under passenger's seat, beneath carpet.
Speedometer Vehicle Speed Sensor (VSS)On right side of transmission, above differential housing.
Throttle Drive Angle Sensor 1 (1.8L)Integral with throttle valve control module.
Throttle Drive Angle Sensor 2 (1.8L)Integral with throttle valve control module.
Throttle Position (TP) Sensor (1.9L)Above accelerator pedal.
Throttle Position (TP) Sensor (2) (2.0L)Integral to throttle valve control module, on throttle body.
Throttle Position (TP) Sensor (2) (2.8L)Integral to throttle valve control module, on throttle body.
Transmission Vehicle Speed Sensor (VSS) (A/T)On top of transmission, near transmission cooler.
Vehicle Speed Sensor (A/T)On top of transmission.
Windshield Washer Fluid Level SensorOn washer fluid reservoir.

SENDING UNITS & SENSORS LOCATION

SOLENOID & SOLENOID VALVES

ComponentComponent Location
Cold Start Injector (1.9L)At left side of engine, on bottom of diesel direct fuel injection pump.
EGR Vacuum Regulator Solenoid Valve (1.9L)On center of firewall. (Схема №1)
Evaporative Emission (EVAP) Canister Purge Regulator Valve (1.8L)Next to engine coolant reservoir.
Evaporative Emission (EVAP) Canister Purge Regulator Valve (2.0L)Next to engine coolant reservoir. (Схема №2)
Evaporative Emission (EVAP) Canister Purge Regulator Valve (2.8L)Next to engine coolant reservoir. (Схема №3)
Fuel Cut-Off Valve (1.9L)At left side of engine, on top of diesel direct fuel injection pump.
Intake Manifold Changeover Valve (2.8L)On left side of engine, above oil filter housing.
Intake Manifold Flap Changeover Valve (1.9L)On intake manifold.
Secondary Air Injection (AIR) Solenoid Valve (2.0L)Above brake fluid reservoir. (Схема №2)
Secondary Air Injection (AIR) Solenoid Valve (2.8L)On left side of engine, above oil cooler housing.
Shift Lock Solenoid (A/T)At base of gear selector, under trim panel.
Turbocharger Recirculating Valve (1.8L)Beneath intake manifold, on bracket.
Wastegate By-Pass Regulator Valve (1.8L)On right front of engine compartment, near camshaft drive belt cover.
Wastegate By-Pass Regulator Valve (1.9L)At left rear side of engine compartment.

SOLENOID & SOLENOID VALVES LOCATION

SWITCHES

ComponentComponent Location
A/C Cut-Out Thermal SwitchOn main radiator hose "T" fitting, near radiator.
A/C Pressure SwitchIn right rear corner of engine compartment.
Ambient Temperature SwitchOn left side of plenum, at base of windshield.
Back-Up Light Switch (M/T)On top of transmission, near starter solenoid.
Brake Fluid Level Warning SwitchIntegral with brake fluid reservoir cap.
Brakelight SwitchAbove brake pedal.
Brake Vacuum Vent Valve SwitchIntegral with brakelight switch, above brake pedal.
Closed Throttle Position (CTP) Switch (Early Production 2.0L)Integral to throttle valve control module, on throttle body.
Closed Throttle Position (CTP) Switch (1.9L)Integral to throttle position sensor, above accelerator pedal.
Clutch Pedal Position (CPP) SwitchAbove clutch pedal.
Clutch Vacuum Vent Valve SwitchAbove clutch pedal.
Coolant Fan Control (FC) SwitchOn bottom left rear of radiator.
Kickdown Switch (1.9L)Integral to throttle position sensor, above accelerator pedal.
Kickdown Switch (2.0L)On left side of firewall, in throttle cable.
Luggage Compartment Light SwitchOn trunk/liftgate latch mechanism.
Multifunction Transmission Range Switch (A/T)On right side of transmission.
Oil Pressure Switch (1.8L)On oil cooler/oil filter housing.
Oil Pressure Switch (1.9L)On oil filter flange. (Схема №1)
Oil Pressure Switch (2.0L)On oil filter flange. (Схема №2)
Oil Pressure Switch (2.8L)On oil filter flange.
Trunk Lock Alarm/Central Locking SwitchOn liftgate/trunk lock cylinder.

SWITCHES LOCATION

MISCELLANEOUS

ComponentComponent Location
Alarm HornOn left side of plenum, at base of windshield.
Data Link Connector (DLC)Under left side of dash.
Fresh Air Blower Series Resistance (W/Fuse)Behind right side of dash, on fresh air blower.
Ignition Coil (1.8L)Mounted on top of cylinder head, above each respective cylinder. (Схема №14)
Ignition Coil (2.0L)On lower left rear of engine.
Ignition Coil (2.8L)On rear of cylinder head.
Positive Crankcase Ventilation (PCV) Heating Element (1.9L)Between cylinder head cover and intake air duct, in PCV hose.
Positive Crankcase Ventilation (PCV) Heating Element (2.0L)Between cylinder head cover and intake air duct, in PCV hose. (Схема №2)
Positive Crankcase Ventilation (PCV) Heating Element (2.8L)Between cylinder head cover and intake air duct, in PCV hose. (Схема №3)
Power Output Stage (1.8L)On right side of engine compartment, on top of air cleaner housing.
Quantity Adjuster (1.9L)Integral with fuel temperature sensor, on injection pump.
Seat Belt Tensioner Ignitor (Left)At base of left "B" pillar, behind trim panel.
Seat Belt Tensioner Ignitor (Right)At base of right "B" pillar, behind trim panel.
Side Air Bag Ignitor (Left)On left side of left front seat back, behind upholstery.
Side Air Bag Ignitor (Right)On right side of right front seat back, behind upholstery.

MISCELLANEOUS LOCATION

CONNECTORS

ComponentComponent Location
T1 (1 Pin)At rear of roof, above headliner.
T2A (2 Pin)At left side of engine compartment, in left wiring duct.
T2B (2 Pin)At left side of engine compartment, in left wiring duct.
T2C (2 Pin)At left side of engine compartment, in left wiring duct.
T2 (2 Pin)At rear of deck lid.
T3A (3 Pin)At lower left front of engine compartment.
T3A (3 Pin)On right front of engine.
T3B (3 Pin)At lower left front of engine compartment.
T3B (3 Pin)On left side of engine.
T3 (3 Pin)On battery cover.
T3 (3 Pin)On left side of engine.
T4A (4 Pin)At lower right rear of engine compartment.
T4B (Black, 4 Pin)At lower right rear of engine compartment.
T4C (Brown, 4 Pin)At lower right rear of engine compartment.
T4 (4 Pin)Near starter motor.
T5 (Black, 5 Pin)At left front of luggage compartment.
T5D (Brown, 5 Pin)At left front of luggage compartment.
T6 (Brown, 6 Pin)At left rear of engine compartment, in protective housing.
T6C (6 Pin)At lower right rear of engine compartment.
T10A (10 Pin)At left side of engine compartment, in left wiring duct.
T10D (Green, 10 Pin)At left rear of engine compartment, in protective housing.
T10E (Black, 10 Pin)At left rear of engine compartment, in protective housing.
T10F (10 Pin)On left side of engine.
T10G (Gray, 10 Pin)At left rear of engine compartment, in protective housing.
T10H (Blue, 10 Pin)At left rear of engine compartment, in protective housing.
T10I (Black, 10 Pin)Behind left kick panel.
T10K (Black, 10 Pin)Behind right kick panel.
T10L (Black, 10 Pin)At left "B" pillar.
T10M (Black, 10 Pin)At right "B" pillar.
T10N (Brown, 10 Pin)Behind left kick panel.
T10 (Orange, 10 Pin)At left rear of engine compartment, in protective housing.
T10P (Brown, 10 Pin)Behind right kick panel.
T10Q (Blue, 10 Pin)Behind left kick panel.
T10R (Blue, 10 Pin)Behind right kick panel.
T12 (12 Pin)At left side of luggage compartment.
T12 (12 Pin)On top of transmission.

CONNECTORS LOCATION

GROUNDS

ComponentComponent Location
G12 (1.9L)On left front of engine compartment. (Схема №1)
G12 (2.0L)On left front of engine compartment. (Схема №2)
G12 (2.8L)On left front of engine compartment. (Схема №3)
G42Below left side of dash.
G43Behind right kick panel.
G44Behind left kick panel.
G49On top right of steering column.
G50At left front of luggage compartment.
G65 (1.9L)On left front of engine compartment. (Схема №1)
G65 (2.0L)On left front of engine compartment. (Схема №2)
G65 (2.8L)On left front of engine compartment. (Схема №3)
G77On base of left "B" pillar.
G78On base of right "B" pillar.
G608 (1.9L)On left rear of engine compartment. (Схема №1)
G608 (2.0L)On left rear of engine compartment. (Схема №2)
G608 (2.8L)On left rear of engine compartment. (Схема №3)
G609 (1.9L)On right rear of engine compartment. (Схема №1)
G609 (2.0L)On right rear of engine compartment. (Схема №2)
G609 (2.8L)On right rear of engine compartment. (Схема №3)

GROUNDS LOCATION