Golf L4-1781cc 1.8L SOHC (1987): Powertrain Management
Also for this vehicle: Golf (5K1) L4-2.0L DSL Turbo (CJAA) (2011), Golf (5K1) L5-2.5L (CBUA) (2011), Golf GL L4-2.0L (AEG) (2001), Golf GL L4-2.0L (AVH) (2002), Golf GL L4-2.0L (AZG) (2001), Golf GLS L4-1.8L Turbo (AWW) (2001), Golf GLS L4-2.0L (AEG) (2001), Golf GLS L4-2.0L (AVH) (2002), Golf GLS L4-2.0L (AZG) (2001), Golf GTI L4-1781cc 1.8L SOHC (HT) (1985), Golf GTI L4-1781cc 1.8L SOHC (RD) (1987), Golf GTI L4-1984cc 2.0L DOHC (9A) (1990), Golf GTI L4-2.0L (ABA) (1997), Golf GTI V6-2792cc 2.8L DOHC (AAA) SFI (1998), Golf III L4-1984cc 2.0L SOHC (1993), Golf III L4-2.0L (ABA) (1995), Golf L4-1.8L Turbo (AWD) (2000), Golf L4-1.8L Turbo (AWW) (2003), Golf L4-1.9L DSL Turbo (AHU) (1997), Golf L4-1.9L DSL Turbo (ALH) (1999), Golf L4-1.9L DSL Turbo (BEW) (2004), Golf L4-1588cc 1.6L DSL SOHC (1987), Golf L4-1588cc 1.6L DSL SOHC Turbo (1985), Golf L4-1781cc 1.8L SOHC (ACC) Can (1993), Golf L4-1781cc 1.8L SOHC (RV) (1990), Golf L4-1781cc 1.8L SOHC (RV, PF) (1989), Golf L4-1896cc 1.9L DSL Turbo (1Z) (1997), Golf L4-2.0L (ABA) (1996), Golf L4-2.0L (AEG) (1999), Golf L4-2.0L (AVH) (2003), Golf L4-2.0L (AZG) (2004), Golf L4-2.0L (BEV) (2004), Golf L4-2.0L DSL Turbo (CJAA) (2010), Golf L5-2.5L (CBUA) (2010), Golf Mk1, Golf Mk2, Golf Mk3, Golf Mk4, Golf Mk5, Golf Mk6.
Diagnostics
Maintenance
Engine
Transmission
Brakes
Electrical
Steering & suspension
Heating & A/C
Body & interior
Choose Sections to see everything in a chapter, or a chapter title to start at its first page.
Relays and Modules - Powertrain Management81 pages
Relays and Modules - Computers and Control Systems51 pages
- Electronic Spark Control Module › Component Information › Locations › W/CIS23
Engine Control Module › Component Information44 pages
Technical Service Bulletins10 pages
All Technical Service Bulletins for Engine Control Module:5 pages
- All Other Service Bulletins for Engine Control Module: › D29001 › Mar › 90 › Tools - VAG 1598 Test Box Description, Application List2
- Locations › OXS Control Unit2
- Diagrams › Diagram Information and Instructions234567891011121314
- Description and Operation › Digifant II System2345678
- Testing and Inspection › Component Tests and General Diagnostics2345678910
- Digital Idle Stabilizer <--> [Idle/Throttle Speed Control Unit] › Component Information › Locations23
- Knock Sensor Module › Component Information › Locations
Relays and Modules - Ignition System16 pages
Sensors and Switches - Powertrain Management196 pages
Sensors and Switches - Computers and Control Systems122 pages
Air Flow Meter/Sensor › Component Information33 pages
Technical Service Bulletins4 pages
All Technical Service Bulletins for Air Flow Meter/Sensor:2 pages
Customer Interest for Air Flow Meter/Sensor:2 pages
- Diagrams › Diagram Information and Instructions234567891011
- Description and Operation › Air Flow Sensor (Digifant II)234567
- Testing and Inspection › Air Flow Sensor/Intake Air Temperature Sensor (Digifant II)234567
- Adjustments › Air Flow Sensor Plate234
- Air Flow Sensor Potentiometer <--> [Air Flow Sensor Plate Position Sensor] › Component Information › Description and Operation23
- Barometric Pressure Sensor › Component Information › Description and Operation
Coolant Temperature Sensor/Switch (For Computer) › Component Information7 pages
Technical Service Bulletins5 pages
- Customer Interest: › 249304 › Nov › 93 › MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke2
- All Technical Service Bulletins: › 249304 › Nov › 93 › MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke2
- All Other Service Bulletins for Coolant Temperature Sensor/Switch (For Computer): › 968702 › Aug › 87 › Trunk Light - Does Not Come On
- All Other Service Bulletins for Coolant Temperature Sensor/Switch (For Computer): › 968702 › Aug › 87 › Trunk Light - Does Not Come On
- Locations › Coolant Temperature Sensor2
Engine Temperature Sensor › Component Information › Technical Service Bulletins6 pages
All Technical Service Bulletins for Engine Temperature Sensor:3 pages
Customer Interest for Engine Temperature Sensor:3 pages
- Intake Air Temperature Sensor › Component Information › Specifications234
Knock Sensor › Component Information17 pages
Technical Service Bulletins6 pages
- Customer Interest: › 288706 › Dec › 87 › Knock Sensor - Poor Low RPM Performance, Pinging
All Technical Service Bulletins for Knock Sensor:3 pages
- All Other Service Bulletins for Knock Sensor: › 289302 › Jun › 93 › Knock Sensor - Avoiding Unnecessary Replacement2
- Diagrams › Diagram Information and Instructions234567891011
- Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins › Instrument Cluster - New MFI Vacuum Sensor/Mounting
Oxygen Sensor › Component Information34 pages
Technical Service Bulletins20 pages
- Recalls: › CMPGPQ › Mar › 89 › Campaign - Disconnect OXS Sensor Light23
All Other Service Bulletins for Oxygen Sensor:4 pages
All Other Service Bulletins for Oxygen Sensor:3 pages
- 269302 › Jul › 93 › Oxygen Sensor - Failure Due to Silicone
- CMPGPQ › Mar › 89 › Campaign - Disconnect OXS Sensor Light23
- Diagrams › Diagram Information and Instructions234567891011
- Testing and Inspection › KE-Jetronic23
- Throttle Full Close Switch › Component Information › Description and Operation2345
- Full Throttle Switch <--> [Throttle Full Open Switch] › Component Information › Locations23456
- Throttle Position Switch › Component Information › Locations2345
Sensors and Switches - Fuel Delivery and Air Induction53 pages
Air Flow Meter/Sensor › Component Information35 pages
Technical Service Bulletins6 pages
All Technical Service Bulletins:2 pages
All Other Service Bulletins for Air Flow Meter/Sensor:2 pages
All Other Service Bulletins for Air Flow Meter/Sensor:0 pages
- 968801 › Feb › 88 › Door Contact Switch - Sticking
- 968701 › Jul › 87 › Interior Light - Inoperative
- Diagrams › Diagram Information and Instructions234567891011
- Description and Operation › Air Flow Sensor (Digifant II)234567
- Testing and Inspection › Air Flow Sensor/Intake Air Temperature Sensor (Digifant II)234567
- Adjustments › Air Flow Sensor Plate234
- Thermo Time Switch › Component Information › Description and Operation2
- Throttle Full Close Switch › Component Information › Description and Operation2345
- Full Throttle Switch <--> [Throttle Full Open Switch] › Component Information › Locations23456
- Throttle Position Switch › Component Information › Locations2345
Sensors and Switches - Ignition System21 pages
- Hall Effect Sensor, Ignition › Component Information › Technical Service Bulletins › Hall Sensor Ignition Kit - Revised23
- Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair
Knock Sensor › Component Information17 pages
Technical Service Bulletins6 pages
- Customer Interest: › 288706 › Dec › 87 › Knock Sensor - Poor Low RPM Performance, Pinging
All Technical Service Bulletins for Knock Sensor:3 pages
- All Other Service Bulletins for Knock Sensor: › 289302 › Jun › 93 › Knock Sensor - Avoiding Unnecessary Replacement2
- Diagrams › Diagram Information and Instructions234567891011
Tune-up and Engine Performance Checks44 pages
Fuel Pressure › System Information6 pages
Air/Fuel Mixture › System Information3 pages
Idle Speed › System Information6 pages
Air Cleaner Housing › Air Cleaner Fresh Air Duct/Hose › Component Information › Technical Service Bulletins2 pages
- Fuel Filter › Fuel Pressure Release › System Information › Service Precautions
- Firing Order › Component Information › Specifications
Ignition Timing › System Information5 pages
Ignition Cable › Component Information › Technical Service Bulletins6 pages
All Technical Service Bulletins for Ignition Cable:3 pages
Distributor, Ignition7 pages
Distributor Advance Unit › Component Information4 pages
- Distributor Cap › Component Information › Testing and Inspection
- Ignition Rotor › Component Information › Specifications2
Spark Plug › Component Information4 pages
- Compression Check › System Information › Specifications23
Computers and Control Systems370 pages
Air Flow Meter/Sensor › Component Information33 pages
Technical Service Bulletins4 pages
Customer Interest for Air Flow Meter/Sensor:2 pages
All Technical Service Bulletins for Air Flow Meter/Sensor:2 pages
- Diagrams › Diagram Information and Instructions234567891011
- Description and Operation › Air Flow Sensor (Digifant II)234567
- Testing and Inspection › Air Flow Sensor/Intake Air Temperature Sensor (Digifant II)234567
- Adjustments › Air Flow Sensor Plate234
- Air Flow Sensor Potentiometer <--> [Air Flow Sensor Plate Position Sensor] › Component Information › Description and Operation23
- Intake Air Temperature Sensor › Component Information › Specifications234
- Auxiliary Air Valve (Idle Speed) › Component Information › Description and Operation2
- Barometric Pressure Sensor › Component Information › Description and Operation
Coolant Temperature Sensor/Switch (For Computer) › Component Information6 pages
Technical Service Bulletins4 pages
- Customer Interest for Coolant Temperature Sensor/Switch (For Computer): › 249304 › Nov › 93 › MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke2
- All Technical Service Bulletins for Coolant Temperature Sensor/Switch (For Computer): › 249304 › Nov › 93 › MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke2
- Locations › Coolant Temperature Sensor2
- Data Link Connector › Component Information › Locations234
- Electronic Spark Control Module › Component Information › Locations › W/CIS23
Engine Control Module › Component Information44 pages
Technical Service Bulletins10 pages
All Technical Service Bulletins for Engine Control Module:5 pages
- All Other Service Bulletins for Engine Control Module: › D29001 › Mar › 90 › Tools - VAG 1598 Test Box Description, Application List2
- Locations › OXS Control Unit2
- Diagrams › Diagram Information and Instructions234567891011121314
- Description and Operation › Digifant II System2345678
- Testing and Inspection › Component Tests and General Diagnostics2345678910
Engine Temperature Sensor › Component Information › Technical Service Bulletins6 pages
All Technical Service Bulletins for Engine Temperature Sensor:3 pages
Customer Interest for Engine Temperature Sensor:3 pages
- Frequency Valve, CIS Fuel Injection › Component Information › Specifications23
- Idle Speed/Throttle Actuator - Electronic › Component Information › Diagrams › Diagram Information and Instructions234567891011
- Idle Boost Valve <--> [Idle Up Control Valve] › Component Information › Description and Operation2
- Digital Idle Stabilizer <--> [Idle/Throttle Speed Control Unit] › Component Information › Locations23
Knock Sensor › Component Information17 pages
Technical Service Bulletins6 pages
- Customer Interest: › 288706 › Dec › 87 › Knock Sensor - Poor Low RPM Performance, Pinging
All Technical Service Bulletins for Knock Sensor:3 pages
- All Other Service Bulletins for Knock Sensor: › 289302 › Jun › 93 › Knock Sensor - Avoiding Unnecessary Replacement2
- Diagrams › Diagram Information and Instructions234567891011
- Knock Sensor Module › Component Information › Locations
- Engine Check Light <--> [Malfunction Indicator Lamp] › Component Information › Locations2
- Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins › Instrument Cluster - New MFI Vacuum Sensor/Mounting
Oxygen Sensor › Component Information34 pages
Technical Service Bulletins20 pages
- Recalls: › CMPGPQ › Mar › 89 › Campaign - Disconnect OXS Sensor Light23
All Other Service Bulletins for Oxygen Sensor:4 pages
All Other Service Bulletins for Oxygen Sensor:3 pages
- 269302 › Jul › 93 › Oxygen Sensor - Failure Due to Silicone
- CMPGPQ › Mar › 89 › Campaign - Disconnect OXS Sensor Light23
- Diagrams › Diagram Information and Instructions234567891011
- Testing and Inspection › KE-Jetronic23
Relays and Modules - Computers and Control Systems51 pages
- Electronic Spark Control Module › Component Information › Locations › W/CIS23
Engine Control Module › Component Information44 pages
Technical Service Bulletins10 pages
All Technical Service Bulletins for Engine Control Module:5 pages
- All Other Service Bulletins for Engine Control Module: › D29001 › Mar › 90 › Tools - VAG 1598 Test Box Description, Application List2
- Locations › OXS Control Unit2
- Diagrams › Diagram Information and Instructions234567891011121314
- Description and Operation › Digifant II System2345678
- Testing and Inspection › Component Tests and General Diagnostics2345678910
- Digital Idle Stabilizer <--> [Idle/Throttle Speed Control Unit] › Component Information › Locations23
- Knock Sensor Module › Component Information › Locations
Sensors and Switches - Computers and Control Systems123 pages
Air Flow Meter/Sensor › Component Information34 pages
Technical Service Bulletins5 pages
All Technical Service Bulletins:2 pages
- All Other Service Bulletins for Air Flow Meter/Sensor: › 908703 › Jul › 87 › Coolant Temperature Gauge Light - Flashes
- All Other Service Bulletins for Air Flow Meter/Sensor: › 908703 › Jul › 87 › Coolant Temperature Gauge Light - Flashes
- Diagrams › Diagram Information and Instructions234567891011
- Description and Operation › Air Flow Sensor (Digifant II)234567
- Testing and Inspection › Air Flow Sensor/Intake Air Temperature Sensor (Digifant II)234567
- Adjustments › Air Flow Sensor Plate234
- Air Flow Sensor Potentiometer <--> [Air Flow Sensor Plate Position Sensor] › Component Information › Description and Operation23
- Barometric Pressure Sensor › Component Information › Description and Operation
Coolant Temperature Sensor/Switch (For Computer) › Component Information6 pages
Technical Service Bulletins4 pages
- Customer Interest for Coolant Temperature Sensor/Switch (For Computer): › 249304 › Nov › 93 › MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke2
- All Technical Service Bulletins for Coolant Temperature Sensor/Switch (For Computer): › 249304 › Nov › 93 › MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke2
- Locations › Coolant Temperature Sensor2
Engine Temperature Sensor › Component Information › Technical Service Bulletins7 pages
All Technical Service Bulletins:3 pages
- All Other Service Bulletins for Engine Temperature Sensor: › 648703 › Jul › 87 › Vent Window - Sticks to Weatherstrip
- All Other Service Bulletins for Engine Temperature Sensor: › 648703 › Jul › 87 › Vent Window - Sticks to Weatherstrip
- Intake Air Temperature Sensor › Component Information › Specifications234
Knock Sensor › Component Information17 pages
Technical Service Bulletins6 pages
- Customer Interest: › 288706 › Dec › 87 › Knock Sensor - Poor Low RPM Performance, Pinging
All Technical Service Bulletins for Knock Sensor:3 pages
- All Other Service Bulletins for Knock Sensor: › 289302 › Jun › 93 › Knock Sensor - Avoiding Unnecessary Replacement2
- Diagrams › Diagram Information and Instructions234567891011
- Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins › Instrument Cluster - New MFI Vacuum Sensor/Mounting
Oxygen Sensor › Component Information34 pages
Technical Service Bulletins20 pages
- Recalls: › CMPGPQ › Mar › 89 › Campaign - Disconnect OXS Sensor Light23
All Other Service Bulletins for Oxygen Sensor:4 pages
All Other Service Bulletins for Oxygen Sensor:3 pages
- 269302 › Jul › 93 › Oxygen Sensor - Failure Due to Silicone
- CMPGPQ › Mar › 89 › Campaign - Disconnect OXS Sensor Light23
- Diagrams › Diagram Information and Instructions234567891011
- Testing and Inspection › KE-Jetronic23
- Throttle Full Close Switch › Component Information › Description and Operation2345
- Full Throttle Switch <--> [Throttle Full Open Switch] › Component Information › Locations23456
- Throttle Position Switch › Component Information › Locations2345
- Throttle Full Close Switch › Component Information › Description and Operation2345
- Full Throttle Switch <--> [Throttle Full Open Switch] › Component Information › Locations23456
- Throttle Position Switch › Component Information › Locations2345
Emission Control Systems39 pages
Air Injection › System Information › Technical Service Bulletins2 pages
- Catalytic Converter › Component Information › Technical Service Bulletins › Exhaust - Sulfur Odor Noticed At the Pipe23
Emissions Maintenance Light › Component Information8 pages
- Exhaust Gas Recirculation › EGR Maintenance Light › Component Information › Service and Repair
- Positive Crankcase Ventilation › Crankcase Control Valve <--> [Positive Crankcase Ventilation Valve] › Component Information › Description and Operation
Thermostatic Air Cleaner › Component Information › Technical Service Bulletins18 pages
Fuel Delivery and Air Induction238 pages
Fuel Pressure › System Information6 pages
- Fuel Pressure Release › System Information › Service Precautions
Idle Speed › System Information6 pages
Air/Fuel Mixture › System Information3 pages
Air Cleaner Housing › Air Cleaner Fresh Air Duct/Hose › Component Information › Technical Service Bulletins2 pages
Air Flow Meter/Sensor › Component Information33 pages
Technical Service Bulletins4 pages
Customer Interest for Air Flow Meter/Sensor:2 pages
All Technical Service Bulletins for Air Flow Meter/Sensor:2 pages
- Diagrams › Diagram Information and Instructions234567891011
- Description and Operation › Air Flow Sensor (Digifant II)234567
- Testing and Inspection › Air Flow Sensor/Intake Air Temperature Sensor (Digifant II)234567
- Adjustments › Air Flow Sensor Plate234
- Auxiliary Air Valve (Idle Speed) › Component Information › Description and Operation2
Cold Start Valve <--> [Cold Start Injector] › Component Information14 pages
- Differential Pressure Regulator › Component Information › Description and Operation
Fuel › Component Information › Technical Service Bulletins18 pages
All Technical Service Bulletins for Fuel:9 pages
- 209402 › Dec › 94 › Fuel System - Poor Engine Performance23
- 269401 › Feb › 94 › Exhaust - Sulfur Odor Noticed At the Pipe
- 202090T01 › May › 90 › Fuel - Improved Additive
- 209002 › Mar › 90 › Fuel - Use of Gasolines Containing Detergent Recommended
- TOOL72487 › Jul › 87 › Tools - Gas Chek Kit for Checking Gasoline23
- Fuel Accumulator › Component Information › Description and Operation
- Fuel Distributor › Component Information › Description and Operation23456789
- Fuel Filter › Fuel Pressure Release › System Information › Service Precautions
- Fuel Pressure Regulator › Component Information › Description and Operation › KE-Jetronic2
- Fuel Supply Line › Component Information › Tools and Equipment
- Fuel Tank › Fuel Gauge Sender › Component Information › Technical Service Bulletins › Tools - Fuel Gauge Sending Unit
- Fuel Tank Unit › Component Information › Technical Service Bulletins › Tools - Fuel Gauge Sending Unit
- Idle Speed/Throttle Actuator - Electronic › Component Information › Diagrams › Diagram Information and Instructions234567891011
- Idle Boost Valve <--> [Idle Up Control Valve] › Component Information › Description and Operation2
- Digital Idle Stabilizer <--> [Idle/Throttle Speed Control Unit] › Component Information › Locations23
- Intake Air Heater › Component Information › Testing and Inspection2
Sensors and Switches - Fuel Delivery and Air Induction51 pages
Air Flow Meter/Sensor › Component Information33 pages
Technical Service Bulletins4 pages
All Technical Service Bulletins for Air Flow Meter/Sensor:2 pages
Customer Interest for Air Flow Meter/Sensor:2 pages
- Diagrams › Diagram Information and Instructions234567891011
- Description and Operation › Air Flow Sensor (Digifant II)234567
- Testing and Inspection › Air Flow Sensor/Intake Air Temperature Sensor (Digifant II)234567
- Adjustments › Air Flow Sensor Plate234
- Thermo Time Switch › Component Information › Description and Operation2
- Throttle Full Close Switch › Component Information › Description and Operation2345
- Full Throttle Switch <--> [Throttle Full Open Switch] › Component Information › Locations23456
- Throttle Position Switch › Component Information › Locations2345
- Thermo Time Switch › Component Information › Description and Operation2
Throttle Body › Component Information3 pages
- Throttle Full Close Switch › Component Information › Description and Operation2345
- Full Throttle Switch <--> [Throttle Full Open Switch] › Component Information › Locations23456
- Throttle Position Switch › Component Information › Locations2345
- Warm Up Regulator › Component Information › Description and Operation2
Ignition System112 pages
- Firing Order › Component Information › Specifications
Ignition Timing › System Information5 pages
- Ignition Coil Wire › Component Information › Specifications
Distributor, Ignition7 pages
Distributor Advance Unit › Component Information4 pages
- Distributor Cap › Component Information › Testing and Inspection
- Ignition Rotor › Component Information › Specifications2
- Electronic Spark Control Module › Component Information › Locations › W/CIS23
- Hall Effect Sensor, Ignition › Component Information › Technical Service Bulletins › Hall Sensor Ignition Kit - Revised23
Ignition Cable › Component Information › Technical Service Bulletins6 pages
All Technical Service Bulletins for Ignition Cable:3 pages
Ignition Coil › Component Information15 pages
Technical Service Bulletins4 pages
- Customer Interest: › 2828T01 › May › 90 › Engine - Hard/No Start During Cold Ambient Temperatures
All Technical Service Bulletins for Ignition Coil:2 pages
- All Other Service Bulletins for Ignition Coil: › 288702 › Jul › 87 › Ignition Coil - Revised Resistance Values
- Diagrams › Diagram Information and Instructions234567891011
Ignition Control Module › Component Information13 pages
Knock Sensor › Component Information17 pages
Technical Service Bulletins6 pages
All Technical Service Bulletins for Knock Sensor:3 pages
- Customer Interest: › 288706 › Dec › 87 › Knock Sensor - Poor Low RPM Performance, Pinging
- All Other Service Bulletins for Knock Sensor: › 289302 › Jun › 93 › Knock Sensor - Avoiding Unnecessary Replacement2
- Diagrams › Diagram Information and Instructions234567891011
Relays and Modules - Ignition System16 pages
Sensors and Switches - Ignition System21 pages
- Hall Effect Sensor, Ignition › Component Information › Technical Service Bulletins › Hall Sensor Ignition Kit - Revised23
- Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair
Knock Sensor › Component Information17 pages
Technical Service Bulletins6 pages
- Customer Interest: › 288706 › Dec › 87 › Knock Sensor - Poor Low RPM Performance, Pinging
All Technical Service Bulletins for Knock Sensor:3 pages
- All Other Service Bulletins for Knock Sensor: › 289302 › Jun › 93 › Knock Sensor - Avoiding Unnecessary Replacement2
- Diagrams › Diagram Information and Instructions234567891011
Spark Plug › Component Information4 pages
- Transmission Control Systems › Lamps and Indicators - Transmission and Drivetrain › Lamps and Indicators - A/T › Shift Indicator › Component Information › Diagrams › Diagram Information and Instructions234567891011