Touareg V8-4.2L (BHX) (2004)
Knock Sensor: Testing and Inspection
Diagnostic Procedures
Knock Sensors, Checking
‹› Contact surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease.
‹› For the Knock Sensors to function properly, it is important for tightening torque to be exactly 20 Nm.
‹› Use only gold-plated terminals when servicing terminals in harness connector of knock sensors.
Special tools, testers and auxiliary items required
‹› Multimeter (VAG1526) or multimeter (VAG1715)
‹› Connector test kit (VAG1594)
‹› Wiring diagram
Test requirements
‹› mounting bolts of knock sensors tightened to 20 Nm.
‹› Ignition switched off.
Test sequence
Cylinder bank 1
-
Disconnect the 3-pin harness connector to Knock Sensor (KS) 1 (G61) (arrow).
Cylinder bank 2
-
Disconnect the 3-pin harness connector to Knock Sensor (KS) 2 (G66) (arrow).