Knock sensor, checking: Notes

NOTE:

It is extremely important to keep to the tightening torque of 20 Nm to ensure the knock sensors perform perfectly.
Knock sensor (KS) 1 G61 and knock sensor (KS) 2 G66 have a direct 2-pin connector and consequently no contact for the shielding in the connector.
Only gold-plated contacts may be used when servicing the knock sensor connector contacts.
Contact surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease.

Special tools, testers and auxiliary items required