A4 Sedan V6-3.2L (BKH) (2007)
Checking knock sensor and wiring
‹› The knock sensor electrical connectors can be identified by color. Knock Sensor (KS) 1 (-G61-) (Bank 1) is green. Knock Sensor (KS) 2 (-G66-)
(Bank 2) is gray.
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Disconnect the electrical harness connector - 1 - or - 2 - of the respective knock sensor.
1
Knock Sensor (KS) 1 ( -G61-.).
2
Knock sensor (KS) 2 (-G66-. ).
Checking internal resistance
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Using a Multimeter, check the Knock Sensor terminals for an internal short.