Test Procedure

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK

Start diagnosis

NOTE: Before disconnecting the Knock Sensor electrical harness connectors, mark the component location.

-- Disconnect the green Knock Sensor (KS) 1 -G61- electrical harness connector -1-.

Fig 1: Identifying Electrical Harness Connectors

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Checking internal resistance

-- Using a multimeter, check the Knock Sensor terminals 1 to 2 for an internal short.

Specified value: ∞ (Infinity) or OL reading.

If the specified value was Not obtained:

-- Replace the faulty Knock Sensor (KS) 1 -G61-. Refer to the Repair Information.

If the specified value was obtained: