volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 1182 > < With Manufacturer's Scan Tool|Page 1180
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Knock Sensor: Testing and Inspection
With Generic Scan Tool

Check Knock Sensors

NOTE:

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Contact surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease.

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For the Knock Sensors to function properly, it is important for tightening torque to be exactly 20 Nm.

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Use only gold-plated terminals when servicing terminals in harness connector of knock sensors.

Recommended special tools and equipment

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VAG1526 multimeter or VAG1715 multimeter

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VAG1594 connector test kit

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Wiring diagram

Test requirements

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Knock sensor securing bolt tightened to 20 Nm.

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Ignition switched off.

Checking resistances and wires (Vehicles with engine code AFP)

Knock Sensor (KS) 1 -G61-

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Disconnect white 3-pin harness connector for knock sensor 1 (arrow).

Knock Sensor (KS) 2 -G66-

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Disconnect brown 3-pin harness connector for knock sensor 2 (arrow).

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