Knock Sensor: Service and Repair
REMOVAL1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE ENGINE UNDER COVER SUB-ASSEMBLY (for 4WD and Pre-Runner)
3. DRAIN ENGINE COOLANT
4. REMOVE INTAKE AIR CONNECTOR
5. REMOVE THROTTLE WITH MOTOR BODY ASSEMBLY
6. DISCONNECT FUEL HOSE
7. DISCONNECT FUEL HOSE NO.2
8. REMOVE INTAKE MANIFOLD
a. Disconnect the fuel vapor feed hose from the VSV.
b. Disconnect the vacuum hose.
c. Remove the bolt, then remove the clamp bracket.
d. Disconnect the water by-pass hose No. 2.
e. Disconnect the ventilation hose No. 3.
f. Disconnect the VSV connector.
g. Disengage the engine wire harness clamp.
h. Disconnect the compressor magnetic clutch connector. (w/AIR CONDITIONING)
i. Disengage the wire harness clamp.
j. Remove the bolt and harness clamp bracket.
k. Disconnect the 3 connectors.
l. Remove the nut shown in the illustration.
m. Disconnect the engine wire harness from the relay block.
n. Remove the 5 bolts and 2 nuts, then remove the intake manifold.
9. REMOVE KNOCK CONTROL SENSOR
a. Disconnect the knock control sensor connector.
b. Remove the bolt, then remove the knock control sensor.
INSTALLATION
1. INSTALL KNOCK CONTROL SENSOR
a. Install the knock control sensor with the bolt.
Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
NOTE: Make sure that the knock sensor is at the correct angle when installing.
b. Connect the knock control sensor connector.
2. INSTALL INTAKE MANIFOLD
a. Install a new gasket onto the intake manifold.
b. Install the intake manifold with the 5 bolts and 2 nuts.
Torque: 25 N.m (255 kgf.cm, 18 ft.lbf)
c. Connect the engine wire harness to the relay block.
d. Install the nut shown in the illustration.
Torque: 10 N.m (102 kgf.cm, 7 ft.lbf)
e. Connect the 3 connectors.
f. Install the harness clamp bracket with the bolt.
Torque: 8.2 N.m (84 kgf.cm, 73 in.lbf)
g. Engage the wire harness clamp.
h. Connect the compressor magnetic clutch connector. (w/AIR CONDITIONING)
i. Engage the engine wire harness clamp.
j. Connect the VSV connector.
k. Connect the ventilation hose No. 3.
l. Connect the water by-pass hose No. 2.
m. Install the clamp bracket with the bolt.
Torque: 19 N.m (194 kgf.cm, 14 in.lbf)
n. Connect the vacuum hose.
o. Connect the fuel vapor feed hose to the VSV.
3. CONNECT FUEL HOSE
4. CONNECT FUEL HOSE NO.2
5. INSTALL THROTTLE WITH MOTOR BODY ASSEMBLY
6. INSTALL INTAKE AIR CONNECTOR
7. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
Torque: 3.9 N.m (40 kgf.cm, 35 in.lbf)
8. ADD ENGINE COOLANT
9. CHECK FOR ENGINE COOLANT LEAKAGE
10. CHECK FOR FUEL LEAKAGE
11. INSTALL ENGINE UNDER COVER SUB-ASSEMBLY NO.1 (for 4WD and Pre-Runner)