Knock Sensor: Service and Repair

Knock Sensor:

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

2. REMOVE RADIATOR SUPPORT OPENING COVER
3. REMOVE ENGINE UNDER COVER LH
4. DRAIN ENGINE COOLANT
5. REMOVE AIR CLEANER ASSEMBLY
6. REMOVE OIL DIPSTICK GUIDE

a. Remove the dipstick.
b. Disconnect the wire harness clamp.
c. Remove the bolt and dipstick guide.

7. REMOVE INTAKE MANIFOLD SUB-ASSEMBLY

a. Disconnect the ventilation hose from the throttle with motor body.
b. Disconnect the No. 2 ventilation hose.
c. Disconnect the No. 1 fuel vapor feed hose.

d. Disconnect the water by-pass hose.
e. Disconnect the No. 2 water by-pass hose.

f. Disconnect the throttle control motor connector.
g. Disconnect the throttle position sensor connector.

h. Disconnect the 3 wire harness clamps.
i. Disconnect the connector clamp.
j. Remove the bolt and harness clamp bracket.

k. Remove the No. 1 fuel vapor feed hose from the hose clamp.
l. Remove the 3 bolts, 2 nuts and intake manifold.

m. Remove the gasket from the cylinder head.

8. REMOVE KNOCK SENSOR

a. Disconnect the knock sensor connector.
b. Remove the nut and sensor.

INSTALLATION

1. INSTALL KNOCK SENSOR

a. Install the knock sensor with the nut.

Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)

NOTE: Be careful to install the knock sensor in the correct direction.

b. Connect the knock sensor connector.

2. INSTALL INTAKE MANIFOLD

a. Install a new gasket to the cylinder head.

b. Install the intake manifold with the 3 bolts and 2 nuts.

Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)

c. Install the No. 1 fuel vapor feed hose to the hose clamp.

d. Install the harness clamp bracket with the bolt.

Torque: 9.0 N.m (92 kgf.cm, 80 in.lbf)

e. Install the connector clamp.
f. Install the 3 wire harness clamps.

g. Connect the throttle position sensor connector.
h. Connect the throttle control motor connector.

i. Connect the No. 2 water by-pass hose.
j. Connect the water by-pass hose.

k. Connect the No. 1 fuel vapor feed hose.
l. Connect the No. 2 ventilation hose.
m. Connect the ventilation hose.

3. INSTALL OIL DIPSTICK GUIDE

a. Apply a light coat of engine oil to a new O-ring and install it to the dipstick guide.

b. Install the dipstick guide with the bolt.

Torque: 9.0 N.m (92 kgf.cm, 80 in.lbf)

NOTE: Be careful that the O-ring is not cracked or jammed when installing it.

c. Connect the wire harness clamp.
d. Install the dipstick.

4. INSTALL AIR CLEANER ASSEMBLY
5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
6. ADD ENGINE COOLANT
7. CHECK FOR ENGINE COOLANT LEAKS
8. INSTALL ENGINE UNDER COVER LH
9. INSTALL RADIATOR SUPPORT OPENING COVER
10. PERFORM INITIALIZATION
a. Perform initialization.

NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.