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 57 (2.0L IGNITION/GLOW PLUG SYSTEM - ABA (A3 PLATFORM))IGNITION SYSTEM, SERVICINGKNOCK SENSOR, CHECKINGCHECKING FUNCTION

2002 Volkswagen Golf GLS, 2.0 K, Standard

Checking function

2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Checking function

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 Volkswagen Cabrio, 2001 Volkswagen Cabrio, 2000 Volkswagen Cabrio, 1999 Volkswagen Jetta, and 1999 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.

Connect VAG 1551 Scan Tool (VAG 1552). Start engine and select "Address word" 01 of engine control module. When doing this engine must be running at idling speed. See VAG 1551 SCAN TOOL (ST), CONNECTING AND SELECTING ENGINE CONTROL MODULE .

Indicated on display

Fig 1: Scan Tool Display - Checking Knock Sensor Function (Rapid Data Transfer)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Press keys 0 and 8 for function "Read Measuring Value Block" and confirm entry with Q key.

Indicated on display

Fig 2: Scan Tool Display - Checking Knock Sensor Function (Read Measuring Value Block)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Press keys 0, 2 and 2 for "Display group number 22" and confirm entry with Q key.

Indicated on display: (1 to 4 Display zones)

Fig 3: Scan Tool Display - Checking Knock Sensor Function (Read Measuring Value Block 22)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

RENDER: 1.0x

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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.