Checking resistance of knock sensors

Knock sensor 1 G61

Fig 1: Identifying 2-Pin Harness Connector At Knock Sensor 1 G61 And 2-Pin Harness Connector To Knock Sensor 2 G66

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Disconnect 2-pin harness connector to Knock Sensor (KS) 1 G61 ( - 1  - ) and/or 2-pin harness connector to Knock Sensor (KS) 2 G66 ( - 2  - ).

Fig 2: Measuring Resistance Between Contacts At Connections To Knock Sensors

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Measure resistance between contacts 1+2 at connections to knock sensors.

Specification ∞ Ω

If specification is not obtained:

• Replace knock sensor(s).
• Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory → DTC memory (functions 02 and 05), checking and erasing 
• Read readiness code → Readiness code, reading  . If DTC memory has been erased, readiness code must be generated again:

Engine code AWW, → Readiness code for engine code AWW, generating 

Engine code AWP, → Readiness code for engine code AWP, generating 

If specification is obtained:

• Check wiring.