Knock sensors, checking: Notes

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

V.A.G 1526 A
V.A.G 1594 A
V.A.G 1598/31

Fig 1: Identifying Special Tools

Courtesy of AUDI OF AMERICA, INC.

Component location. See item 16 in COMPONENT LOCATIONS, OVERVIEW .

NOTE:

The knock sensors -G61- and -G66- cannot be tested electrically by themselves.
Use only gold-plated terminals when repairing the cable connectors for the knock sensors.
To ensure that the knock sensors function properly it is important to keep exactly to the specified tightening torque of 20 Nm.
Check connector between knock sensor and wiring harness for corrosion.