Passat Sedan V6-2792cc 2.8L DOHC (AAA) SFI (1997)
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Separate black 3-pin connector to Knock Sensor (KS) 2 -G66- (arrow).
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Measure resistance between terminals 1 and 2, 1 and 3 and 2 and 3 on KS connector.
Specification: infinite ohms.
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Connect VAG 1598118 test box to ECM wiring harness (arrow).