Knock Sensor: Removal

Disconnect the ground cable from the battery.

Fig 1: Disconnecting Ground Cable From Battery
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Remove the air intake chamber. <Ref. to REMOVAL , Air Intake Chamber. >
Disconnect the knock sensor connector.

Fig 2: Identifying Knock Sensor Connector
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Remove the knock sensor from cylinder block.

Fig 3: Identifying Knock Sensor
Courtesy of SUBARU OF AMERICA, INC.