New Beetle GLS L4-2.0L (AVH) (2001)
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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Securing bolt for knock sensors tightened to 20 Nm.
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Ignition switched off.
Checking resistances and wires (Vehicles with engine code AEG)
-Checking resistances and wires (Vehicles with engine code AVH, AZG, BDC).
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Disconnect 2-pin connectors from knock sensors.
1
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Knock Sensor (KS) 1 -G61-
2
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Knock Sensor (KS) 2 -G66-
Note: Before disconnecting harness connectors, mark allocation to component.
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Measure resistance between terminals 1 + 2 at connectors to knock sensors. Specified value: Infinite Ohms
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Connect test box to control module wiring harness, connect test box for wiring test. See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test