Removing the knock sensor (KS)

Remove the cable from the battery negative terminal. First read Battery, disconnecting .

Fig 1: Identifying Intake Manifold Between Front Cover Plate And Air Cleaner Housing

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove the intake pipe between the front cover plate and the air cleaner (ACL).

Applies only to B6xx4T 

Fig 2: Hose Between Turbocharger And Charge Air Cooler

Courtesy of VOLVO CARS OF NORTH AMERICA.

Disconnect the hose between the turbocharger (TC) and the charge air cooler (CAC) at its upper end. Push it to one side.

Disconnect the hose between the intake and the bypass valve on the pipe between the intake and the charge air cooler (CAC).

Remove the hose between the bypass valve and the pipe between the air cleaner (ACL) and the turbocharger (TC).

Fig 3: Identifying Boost Pressure Sensor Connectors And Charge Air Temperature Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

Disconnect the connectors for the boost pressure sensor and the charge air temperature sensor from the pipe between the charge air cooler and the throttle body (TB).

Fig 4: Identifying Pipe Between Throttle And Charge Air Cooler

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove the pipe between the throttle body (TB) and the charge air cooler.

Remove 

Fig 5: Identifying Knock Sensor Screws

Courtesy of VOLVO CARS OF NORTH AMERICA.

• the screws for the knock sensors (KS)
• the tie strap at the connector.

  Pull the sensors downwards and past the starter motor bracket at the rear edge.