2003 VOLKSWAGEN

Passat

BUZZERS, RELAYS & TIMERS

BUZZERS, RELAYS & TIMERS LOCATION

CIRCUIT PROTECTION DEVICES

CIRCUIT PROTECTION DEVICES LOCATION

Component Component Location A/C Clutch Relay (W/Auto A/C) On thirteenfold (thirteen position) auxiliary

relay panel. See Fig. 5 . Brake Booster Relay (1.8L) On thirteenfold (thirteen position) auxiliary

relay panel. See Fig. 5 . Coolant Fan Control Relay On thirteenfold (thirteen position) auxiliary

relay panel. See Fig. 5 . Daytime Running Lights Changeover Relay

On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Dual Horn Relay On relay panel. See Fig. 6 . First Speed Engine Coolant Fan Control Relay

On eightfold (eight position) auxiliary relay panel. See Fig. 4 .

Foglight Relay On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Fuel Pump (FP) Relay On relay panel. See Fig. 6 . Load Reduction Relay On relay panel. See Fig. 6 . Motronic Engine Control Module Power Supply Relay

In control module housing, next to Motronic engine control module.

Secondary Air Injection Pump Relay In control module housing, near master cylinder.

Second Speed Coolant Fan Control Relay

On eightfold (eight position) auxiliary relay panel. See Fig. 4 .

Selector Lever Light Relay On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Solar Cell Separation Relay On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Starting Interlock Relay (A/T) On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Starting Interlock Relay (Alarm System)

On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Starting Interlock Relay (Clutch System) (M/T)

On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Wiper/Washer Intermittent Relay (2) On relay panel. See Fig. 6 .

Component Component Location

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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CONTROL UNITS

CONTROL UNITS LOCATION

Control Module Housing On left side of engine compartment, near master cylinder.

Eightfold (Eight Position) Auxiliary Relay Panel

Under left side of dash.

Fuse Panel Under left side of dash. Relay Panel Under left side of dash. Thirteenfold (Thirteen Position) Auxiliary Relay Panel

Under left side of dash.

Component Component Location ABS Control Module (1.8L) On left front of engine compartment. See Fig. 1 . ABS Control Module (2.8L) On left front of engine compartment. ABS Control Module (4.0L) On left front of engine compartment. A/C Cut-Off Control Module (W/Manual A/C)

On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Air Bag Control Module Mounted on floor in front of center console, near ventilation ducts. See Fig. 3 .

Antenna Selection Control Module

Under center of rear speaker shelf.

Climatronic Control Module In center console, below radio. Comfort System Central Control Module

Mounted on floorpan in protective box, under driver's seat & carpet. See Fig. 3 .

Coolant Fan Control Module (1.8L)

On left front framerail, near vacuum reservoir.

Coolant Fan Control Module (2.8L)

On left front framerail, near vacuum reservoir.

Coolant Fan Control Module (4.0L)

Between right & left cooling fans.

Door Control Module (Driver's Side)

Part of power window assembly, in driver's door. See Fig. 3 .

Door Control Module (Left Rear) Part of power window motor assembly, in left rear door.

Door Control Module (Passenger's Side)

Part of power window motor assembly, in passenger's front door.

Door Control Module (Right Rear)

Part of power window motor assembly, in right rear door.

Fresh Air Blower Control Module

Integral to fresh air blower, under right side of dash.

Fuel Pump Control Module In luggage compartment, under spare tire. Lamp Failure Control Module (2.8L)

On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Lamp Failure Control Module (4.0L)

On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

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ELECTRICAL COMPONENT LOCATOR

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MOTORS

MOTORS LOCATION

Motronic Engine Control Module (ECM) (1.8L)

In protective box, in left rear corner of engine compartment. See Fig. 1 .

Motronic Engine Control Module (2.8L)

In protective box, in left rear corner of engine compartment. See Fig. 2 .

Motronic Engine Control Module (4.0L)

In protective box, in left rear corner of engine compartment.

Multifunction Steering Wheel Control Unit (2)

On thirteenfold (thirteen position) auxiliary relay panel. See Fig. 5 .

Throttle Valve Control Module (1.8L)

On throttle body. See Fig. 1 .

Throttle Valve Control Module (2.8L)

On throttle body, on rear of intake manifold. See Fig. 2 .

Throttle Valve Control Module (4.0L)

On throttle body, on rear of intake manifold.

Transmission Control Module On passenger's side floor cavity.

Component Component Location Airflow Flap Motor Behind right end of dash, on HVAC housing. Brake System Vacuum Pump At left front of engine compartment, near

ABS control module. Central Air Flap Motor Behind lower left center of dash, on HVAC

housing. Deck Lid Central Locking System Motor

In rear lid lock/latch mechanism.

Footwell/Defroster Flap Motor Behind lower right center of dash, on HVAC housing.

Fresh Air Blower Behind right side of dash, on HVAC housing. See Fig. 3 .

Fuel Pump In fuel tank, beneath right front of luggage compartment.

Fuel Tank Lid Unlock Motor On right side of luggage compartment. See Fig. 3 .

Leak Detection Pump In left rear wheelhouse, behind plastic liner. Level Control System Sensor (Left Front)

On left front suspension assembly.

Level Control System Sensor (Left Rear)

On left rear suspension assembly.

Rear Lid Remote Unlock Motor On rear lid with lock/latch mechanism. See Fig. 3 .

Rear Windshield Wiper Motor On center of rear hatch, behind trim panel. Secondary Air Injection (AIR) Pump Motor (2.8L)

In lower right front corner of engine compartment.

Secondary Air Injection (AIR) Pump Below right headlight, behind bumper.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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SENDING UNITS & SENSORS

SENDING UNITS & SENSORS LOCATION

Motor (4.0L) Temperature Regulator Flap Motor Behind lower right center of dash, on HVAC

housing. Transfer Fuel Pump Inside auxiliary fuel tank. Windshield & Rear Window Washer Pump

On left front of vehicle, behind left front turn signal lamp.

Component Component Location ABS Wheel Speed Sensor (Front) (Left/Right)

On front of respective wheel bearing housing.

ABS Wheel Speed Sensor (Rear) (Left/Right)

On back of respective wheel bearing assembly.

Accelerator Pedal Position Sensor Above accelerator pedal. Auxiliary Tank Fuel Level Empty Sensor

Inside auxiliary fuel tank.

Auxiliary Tank Fuel Level Sensor

Inside auxiliary fuel tank.

Barometric Pressure (BARO) Sensor (1.8L)

In control module housing, at left rear of engine compartment. See Fig. 1 .

Camshaft Position (CMP) Sensor (1.8L)

On front of cylinder head, behind camshaft timing belt cover. See Fig. 1 .

Camshaft Position Sensor (2.8L) On front of right cylinder head, behind timing belt cover. See Fig. 2 .

Camshaft Position Sensor (4.0L) On rear of right cylinder head. Camshaft Position Sensor 2 (2.8L)

On rear of left cylinder head.

Camshaft Position Sensor 2 (4.0L)

On rear of right cylinder head.

Camshaft Position Sensor 3 (4.0L)

On rear of left cylinder head.

Camshaft Position Sensor 4 (4.0L)

On rear of left cylinder head.

Center Outlet Temperature Sender

Behind lower center of dash, on bottom of HVAC unit.

Charge Air Pressure Sensor (1.8L)

Behind right headlight.

Engine Coolant Level Sensor On bottom of coolant reservoir/expansion tank. Engine Coolant Temperature (ECT) Sensor (1.8L)

On rear of cylinder head. See Fig. 1 .

Engine Coolant Temperature Sensor (2.8L)

On rear of right cylinder head.

Engine Coolant Temperature Sensor (1) (4.0L)

Near top right of radiator, on radiator cooling pipe.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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Engine Coolant Temperature Sensor (2) (4.0L)

On coolant pipe, on rear of engine.

Engine Oil Temperature Sensor (1.8L)

On left side of engine, on oil filter housing.

Engine Oil Temperature Sensor (2.8L)

On lower left front of engine.

Engine Speed (RPM) Sensor (1.8L)

On left rear of engine block, behind oil filter. See Fig. 1 .

Engine Speed (RPM) Sensor (2.8L)

On left side of transmission bellhousing.

Floor Outlet Temperature Sender Behind lower left center of dash, on HVAC unit. Fresh Air Intake Duct Temperature Sensor

Under dust/pollen filter, on right side of plenum.

Fuel Level Sensor In fuel tank, under right front of luggage compartment.

Fuel Gauge Sender In fuel tank, under right front of luggage compartment.

Fuel Supply Sensor 2 Below left rear seat, in fuel tank. Fuel Supply Sensor 3 At top of fuel tank, under luggage compartment. Heated Oxygen Sensor (HO2S) (1.8L)

In catalytic converter inlet, near turbocharger. See Fig. 1 .

Heated Oxygen Sensor (2.8L) Behind right cylinder head, on exhaust manifold. Heated Oxygen Sensor (4.0L) On right exhaust manifold. Heated Oxygen Sensor 2 (2.8L) Behind left cylinder head, on exhaust manifold. Heated Oxygen Sensor 2 (4.0L) On left exhaust manifold. Intake Air Temperature (IAT) Sensor (1.8L)

On intake manifold, behind throttle body. See Fig. 1 .

Intake Air Temperature Sensor (2.8L)

On rear of intake manifold, in intake duct.

Intake Air Temperature Sensor (4.0L)

Integral to mass airflow sensor.

Knock Sensor (KS) No. 1 (1.8L) On left front of engine block. See Fig. 1 . Knock Sensor No. 1 (2.8L) On right side of engine block, beneath intake

manifold. Knock Sensor No. 1 (4.0L) Behind generator, on engine block. Knock Sensor (KS) No. 2 (1.8L) On left rear of engine block. See Fig. 1 . Knock Sensor No. 2 (2.8L) On left side of engine block, beneath intake

manifold. Knock Sensor No. 2 (4.0L) On right rear of engine block. Knock Sensor No. 3 (4.0L) On front of engine block. Knock Sensor No. 4 (4.0L) On left rear of engine block. Mass Airflow (MAF) Sensor (1.8L)

Inside air cleaner housing. See Fig. 1 .

Mass Airflow Sensor (2.8L) Attached to air cleaner housing. See Fig. 2 . Mass Airflow Sensor (4.0L) Attached to air cleaner housing.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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SOLENOID & SOLENOID VALVES

SOLENOID & SOLENOID VALVES LOCATION

Oil Level Thermal Sensor On bottom of oil pan. Outside Air Temperature Sensor In front of A/C condenser. See Fig. 3 . Oxygen Sensor (Behind TWC) (1.8L)

Behind catalytic converter.

Oxygen Sensor (Behind TWC) (2.8L)

Behind right catalytic converter.

Oxygen Sensor (Behind TWC) (4.0L)

On rear of right catalytic converter.

Oxygen Sensor 2 (Behind TWC) (2.8L)

Behind left catalytic converter.

Oxygen Sensor 2 (Behind TWC) (4.0L)

On rear of left catalytic converter.

Rotation Rate Sender Under center of rear seat. Side Air Bag Crash Sensor (Driver's Side)

Under driver's seat & carpet, mounted on floorpan crossmember. See Fig. 3 .

Side Air Bag Crash Sensor (Passenger's Side)

Under passenger's seat & carpet, mounted on floorpan crossmember.

Speedometer Vehicle Speed Sensor (VSS)

On left side of engine compartment, near drive flange. See Fig. 3 .

Sunlight Photo Sensor Inside defroster grille, on center of dashboard. Throttle Position Sensor Above accelerator pedal. Transmission Vehicle Speed Sensor

On left side of transmission, near drive flange.

Transverse Acceleration Sensor Under center of rear seat. Windshield Washer Fluid Level Sensor

In windshield washer fluid reservoir. See Fig. 3 .

Component Component Location Camshaft Adjustment Valve 1 (2.8L) On rear of right cylinder head. Camshaft Adjustment Valve 1 (4.0L) On rear of right cylinder head. Camshaft Adjustment Valve 2 (2.8L) On front of left cylinder head. Camshaft Adjustment Valve 2 (4.0L) On rear of left cylinder head. Camshaft Adjustment Valve 1 (Exhaust) (4.0L)

On rear of right cylinder head.

Camshaft Adjustment Valve 2 (Exhaust) (4.0L)

On rear of left cylinder head.

Evaporative Emission (EVAP) Canister Purge Regulator Valve (1.8L)

On right side of engine compartment, next to air cleaner housing. See Fig. 1 .

Evaporative Emission (EVAP) Canister Purge Regulator Valve (2.8L)

On right side of engine compartment, next to air cleaner housing. See Fig. 2 .

Evaporative Emission (EVAP) Canister Purge Regulator Valve (4.0L)

On right side of engine compartment, next to air cleaner housing.

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ELECTRICAL COMPONENT LOCATOR

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SWITCHES

SWITCHES LOCATION

MISCELLANEOUS

Intake Manifold Tuning Valve Changeover Valve (2.8L)

On rear of intake manifold. See Fig. 2 .

Secondary Air Injection (AIR) Solenoid Valve (1.8L)

Beneath intake manifold, on bracket.

Secondary Air Injection (AIR) Solenoid Valve (2.8L)

On rear of intake manifold, near air intake duct. See Fig. 2 .

Secondary Air Injection (AIR) Solenoid Valve (4.0L)

Near left front of intake manifold.

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.

Component Component Location A/C Pressure Switch On right side of A/C condenser, below right

headlight. See Fig. 3 . Back-Up Light Switch (M/T) On left side of transmission, above drive flange.

See Fig. 3 . Brake Fluid Level Warning Switch

In brake fluid master cylinder fluid reservoir. See Fig. 3 .

Brakelight Switch Below left side of dash, on pedal cluster. Central Locking Trunk Lid Switch

On trunk lock mechanism.

Clutch Pedal Position Switch Below left side of dash, on pedal cluster. Clutch Vacuum Vent Valve Switch

Below left side of dash, on pedal cluster.

Coolant Fan Control (FC) Thermal Switch

On lower left side of radiator. See Fig. 3 .

Hood Alarm Switch Part of hood latch assembly. See Fig. 3 . Multifunction Transmission Range Switch

On left side of transmission.

Oil Pressure Switch (1.8L) On oil cooler/oil filter housing. See Fig. 1 . Oil Pressure Switch (2.8L) On lower left front of engine, on oil pan extension. Oil Pressure Switch (1.4 Bar) (4.0L)

On oil filter bracket.

Parking Brake Warning Light Switch

Below center console, at parking brake lever mechanism.

Seat Belt Switch (Left) In driver's seat belt buckle. Trunk Lock Alarm Switch In rear lid with lock/latch mechanism. Vacuum Vent Valve Brake Switch

Integral to brakelight switch.

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ELECTRICAL COMPONENT LOCATOR

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MISCELLANEOUS LOCATION

CONNECTORS

CONNECTORS LOCATION

Component Component Location Alarm Horn On left front of luggage compartment, behind rear

seat. See Fig. 3 . Amplifier Under right side of rear speaker shelf. Coolant Fan Control Series Resistance

On left front underside of longitudinal chassis member.

Data Link Connector Under left side of dash. Dual Horns Below right front headlight. Ignition Coil (4) (1.8L) Mounted on top of cylinder head, above each

respective cylinder. Ignition Coil (2.8L) On front of intake manifold. See Fig. 2 . Map Controlled Engine Cooling Thermostat (4.0L)

Under center of intake manifold.

Power Output Stage (1.8L) On right side of engine compartment, on top of air cleaner housing. See Fig. 1 .

Power Output Stage (2.8L) Integral to ignition coil.

Component Component Location T6 (Black, 6 Pin) At left side of luggage compartment. T6A (Black, 6 Pin) Behind center of dash. T6B (Blue, 6 Pin) Behind center of dash. T6C (Blue, 6 Pin) At base of left "A" pillar, on connector station. T6D (Red, 6 Pin) Behind center of dash. T6D (Red, 6 Pin) On right "B" pillar. T6D (Pink, 6 Pin) At base of right "A" pillar, on connector station. T6E (Black, 6 Pin) Near right side of steering column. T6E (Yellow, 6 Pin) At base of left "A" pillar, on connector station. T6J (Red, 6 Pin) At base of left "A" pillar, on connector station. T6K (Red, 6 Pin) At base of right "A" pillar, on connector station. T6M (Black, 6 Pin) At base of right "A" pillar, on connector station. T6N (Red, 6 Pin) At left side of engine compartment, in protective control

module housing. T6O (Brown, 6 Pin) At base of right "A" pillar, on connector station. T6Q (Black, 6 Pin) At base of left "A" pillar, on connector station. T6V (Violet, 6 Pin) At base of right "A" pillar, on connector station. T6W (Gray, 6 Pin) At base of right "A" pillar, on connector station. T6X (Brown, 6 Pin) At base of right "A" pillar, on connector station. T8 (Black, 8 Pin) At base of right "A" pillar, on connector station. T8E (Black, 8 Pin) In right side of rear lid. T8U (Brown, 8 Pin) At base of right "A" pillar, on connector station.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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GROUNDS

GROUNDS LOCATION

T10 (White, 10 Pin) Near right side of steering column. T10A (Brown, 10 Pin)

At base of left "A" pillar, on connector station.

T10B (Black, 10 Pin)

At left side of engine compartment, in protective control module housing.

T10C (Violet, 10 Pin)

At base of left "A" pillar, on connector station.

T10D (Brown, 10 Pin)

At left side of engine compartment, in protective control module housing.

T10E (Orange, 10 Pin)

At left side of engine compartment, in protective control module housing.

T10F (Blue, 10 Pin) At left side of engine compartment, in protective control module housing.

T10F (Blue, 10 Pin) At base of left "A" pillar, on connector station. T10G (White, 10 Pin)

At left side of engine compartment, in protective control module housing.

T10H (Blue, 10 Pin) At base of left "A" pillar, on connector station. T10I (Blue, 10 Pin) At base of right "A" pillar, on connector station. T10K (Gray, 10 Pin) At base of left "A" pillar, on connector station. T10L (Black, 10 Pin) At base of left "A" pillar, on connector station. T10M (Brown, 10 Pin)

At base of right "A" pillar, on connector station.

T10N (Orange, 10 Pin)

At base of left "A" pillar, on connector station.

T10O (Red, 10 Pin) At base of left "A" pillar, on connector station. T10P (Yellow, 10 Pin)

At base of right "A" pillar, on connector station.

T10S (Pink, 10 Pin) At base of left "A" pillar, on connector station. T10T (Red, 10 Pin) At base of left "A" pillar, on connector station. T10V (Violet, 10 Pin)

At base of right "A" pillar, on connector station.

T10W (Gray, 10 Pin) At base of right "A" pillar, on connector station. T12 (12 Pin) Near steering column. T15A (White, 15 Pin)

At left side of engine compartment, in protective control module housing.

T15C (Red, 15 Pin) At base of right "A" pillar, on connector station. T15K (Gray, 15 Pin) At base of left "A" pillar, on connector station. T15M (Brown, 15 Pin)

At base of right "A" pillar, on connector station.

T15S (Red, 15 Pin) At left side of engine compartment, in protective control module housing.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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COMPONENT LOCATION GRAPHICS

Component Component Location G12 (1.8L) On left side of engine compartment. See Fig. 1 . G12 (2.8L) On left side of engine compartment. See Fig. 2 . G12 (4.0L) On left side of engine compartment. G13 On right side of engine compartment. G16 (1.8L) On valve cover. See Fig. 1 . G16 (2.8L) On valve cover. G16 (4.0L) On valve cover. G22 On hydraulic unit. G27 On valve cover. G28 On left side of firewall. G30 Beside fuse/relay panel. G32 Behind left side of dash. G43 On lower right "A" pillar. G41 Below rear shelf. G44 On lower left "A" pillar. G49 Near steering wheel. G50 On left side of luggage compartment. G52 In left side of rear lid. G53 In right side of rear lid. G57 On left rear pillar. G73 On rear roof bow. G75 On right rear pillar. G77 On lower left "B" pillar. G78 On lower right "B" pillar. G606 Between front seats.

NOTE: Figures may show multiple component locations. Refer to appropriate table for proper figure references.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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Fig. 1: Engine Compartment (1.8L) Courtesy of VOLKSWAGEN UNITED STATES, INC.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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Fig. 2: Engine Compartment (2.8L) Courtesy of VOLKSWAGEN UNITED STATES, INC.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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Fig. 3: Vehicle Overview Courtesy of VOLKSWAGEN UNITED STATES, INC.

2003 Volkswagen Passat GLS

ELECTRICAL COMPONENT LOCATOR

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