Knock sensors, checking: Continuation

If the specifications are not obtained:

• Press → button.
• Press buttons - 0  - and - 6  - to select "End Output" function 06 and press - Q  - button to confirm input.
• Switch ignition off.

Knock Sensor (KS) 1 G61 

Fig 1: 3-Pin Harness Connector To Knock Sensor 1

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Disconnect white 3-pin harness connector to knock sensor 1 - arrow  -.

Knock Sensor (KS) 2 G66 

Fig 2: 3-Pin Harness Connector To Knock Sensor 2

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Disconnect brown 3-pin harness connector to knock sensor 2 (arrow).

Fig 3: 3-Pin Harness Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Measure resistance between knock sensor terminals - 1  - + - 2  - , - 1  - + - 3  - and - 2  - + - 3  -. Specified value: ∞Ω
• Remove wiper arms and plenum chamber cover. → 92 WINDSHIELD WIPER & WASHER SYSTEM

If the specification is not obtained:

• Replace Knock Sensor (KS) 1 G61 , or replace Knock Sensor (KS) 2 G66.
• Check DTC memory. If necessary, repair any malfunctions and erase DTC memory → Diagnostic Trouble Code (DTC) memory, checking and erasing (scan tool functions 02 and 05)  .
• Display readiness code → Readiness code (function 15), displaying  . If the DTC memory has been erased, the readiness code must be generated again → Readiness code (function 15), generating  .

If the specification is obtained:

• Check wiring.