Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 91 (2.8L & 3.2L - GENERIC SCAN TOOL, ENGINE CODE(S): AFP, BDF, BJS [A4 PLATFORM] (28 IGNITION/GLOW PLUG SYSTEM - ST GENERIC SCAN TOOL))28 IGNITION/GLOW PLUG SYSTEMIGNITION, SERVICINGKNOCK SENSORS, CHECKINGNOTES
2002 Volkswagen Golf GLS, 2.0 K, Standard
Knock sensors, checking: Notes
2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Notes
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen R32, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, and 2003 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Contact surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease.
- For the Knock Sensors to function properly, it is important for tightening torque to be exactly 20 Nm.
- Use only gold-plated terminals when servicing terminals in harness connector of knock sensors.
Recommended special tools and equipment
- V.A.G 1526 multimeter or V.A.G 1715 multimeter
- V.A.G 1594 connector test kit
- Wiring diagram
Test requirements
- Ground (GND) connections between engine and chassis must be OK.
- Mounting bolts of knock sensors tightened to 20 Nm.
- Ignition switched off.
Check resistances and wires:
- Vehicles with engine code AFP. Refer to Checking resistances and wires (vehicles with engine code AFP) ,
- Vehicles with engine codes BDF and BJS. Refer to Checking resistances and wires (vehicles with engine codes BDF and BJS) .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.