Knock Sensor: Service and Repair
REPLACEMENT1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE ENGINE UNDER COVER SUB-ASSEMBLY NO.1 (PRE RUNNER AND 4WD TYPE)
3. DRAIN ENGINE COOLANT
4. REMOVE INTAKE AIR CONNECTOR
5. REMOVE THROTTLE W/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 bypass 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.
10. 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.
11. 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 bypass 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.
12. CONNECT FUEL HOSE
13. CONNECT FUEL HOSE NO.2
14. INSTALL THROTTLE W/MOTOR BODY ASSEMBLY
15. INSTALL INTAKE AIR CONNECTOR
16. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
Torque: 3.9 N.m (40 kgf.cm, 35 in.lbf)
17. ADD ENGINE COOLANT
18. CHECK FOR ENGINE COOLANT LEAKAGE
19. CHECK FOR FUEL LEAKAGE
20. INSTALL ENGINE UNDER COVER SUB-ASSEMBLY NO.1 (PRE RUNNER AND 4WD TYPE)