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Passat Sedan V6-3.6L (BLV) (2008)

Powertrain Management > Ignition System > Sensors and Switches - Ignition System > Knock Sensor > Component Information > Testing and Inspection

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Knock Sensor: Testing and Inspection

Diagnostic Procedures

Knock Sensors, Checking

Special tools, testers and auxiliary items required

‹› Multimeter.

‹› Wiring diagram.

Test requirements

‹› The mounting bolt of Knock Sensor (KS) 1 (G61)/Knock Sensor (KS) 2 (G66) tightened to 20 Nm.

‹› The Motronic Engine Control Module (ECM) (J623) fuses OK.

‹› Battery voltage at least 12.5 volts.

‹› All electrical consumers such as, lights and rear window defroster, switched off.

‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".

‹› A/C switched off.

‹› Ground connections between engine/transmission/chassis OK.

‹› Ignition switched off.

Test procedure

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Observe safety precautions. Refer to => [ Safety Precautions ] See: Computers and Control Systems/Service Precautions/Safety Precautions

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Observe Clean Working Conditions. Refer to => [ Clean Working Conditions ] See: Computers and Control Systems/Service Precautions/Clean
Working Conditions

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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check.

Procedure

‹› Before disconnecting the Knock Sensor electrical harness connectors, mark the component location.

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Disconnect Knock Sensor (KS) 1 (G61) electrical harness connector- 1 - or Knock Sensor (KS) 2 (G66) electrical harness connector - 2 -.

Powertrain Management > Ignition System > Sensors and Switches - Ignition System > Knock Sensor > Component Information > Testing and Inspection

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