Knock Sensor (KS) Replacement (Bank 1)

REMOVAL PROCEDURE

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.




1. Disconnect the ground cable from the battery.
2. Disconnect the wiring harness from the knock sensor (1).




3. Release the accessory drive belt by moving the belt tension roller in the direction of the arrow (clockwise).
4. Remove the accessory drive belt from the belt tension roller.
5. Remove the fastening bolts from the belt tension roller and remove the tension roller.

IMPORTANT:
^ There is a bracket for a cable bundle on the lower fastening bolt.
^ The cable for the knock sensor is guided past the rear timing belt cover by several retaining clips. Only one retainer clip is shown.

6. Remove the cable for the knock sensor from the retaining clips on the rear timing belt cover.
7. Remove the lower air dam on the lower engine cover for access to the alternator.




8. Remove the upper alternator fastening bolt (1). Loosen the lower alternator fastening bolt.
9. Remove the air cooling duct from the alternator.
10. Swing the alternator aside. Observe the cable routing for the knock sensor.
11. Remove the knock sensor from the engine block.

INSTALLATION PROCEDURE




1. Thoroughly clean the mating surfaces of the knock sensor and the engine block. The entire contact surface of the knock sensor must lie directly on the engine block.

IMPORTANT: Do not use washers, spring washers, or toothed washers when installing the knock sensor. Tighten all of the fasteners to the proper torque.

2. Install the knock sensor (1) into the engine block.

Tighten
Tighten the sensor to 22 N.m (16 lb ft).

IMPORTANT: The cable for the knock sensor is guided past the rear timing belt cover by several retaining clips. Only one retainer clip is shown.

3. Install the cable for the knock sensor into the retaining clips. Ensure that the cable does not contact any moving parts.
4. Connect the wiring harness for the knock sensor.
5. Swing the alternator back into position. The cable for the knock sensor runs between the engine block and the alternator.
6. Install the air cooling duct onto the alternator.




7. Install/tighten the upper alternator fastening bolt (1) and the lower alternator fastening bolt (2).
8. Install the belt tension roller to the cylinder head. The cable for the knock sensor runs between the cylinder head and the belt tension roller bracket.
9. Install the belt tension roller fastening bolts. Install the bracket for the cable bundle at the lower fastening bolt.




10. Rotate the belt tension roller in the direction of the arrow (clockwise).

IMPORTANT: Make sure that the accessory drive belt routing and running direction are correct.

11. Install the accessory drive belt. Release the belt tension roller.
The accessory drive belt tension is automatically adjusted by the tension roller.
12. Install the air dam to the underside of the vehicle.