New Beetle L4-2.0L (AVH) (2005)
Knock Sensor: Testing and Inspection
Knock Sensors, Checking
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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V.A.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 connector test kit
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Wiring diagram
Requirements
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Knock sensor mounting bolt tightened to 20 Nm.
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Ignition switched off.
Checking resistances and wires (Vehicles with engine code AVH, AZG, BDC, BEV, BCD)
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Disconnect 2-pin connectors from knock sensors.
1. Knock Sensor (KS) 1 -G61-
2. 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: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test