Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2007HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMKNOCK SENSORSERVICE AND REPAIR
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Knock Sensor: Service and Repair
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Service and Repair
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE
3. REMOVE THROTTLE BODY ASSEMBLY
4. REMOVE INTAKE MANIFOLD
a. REMOVE the 5 bolts, 2 nuts, intake manifold and gasket.
5. REMOVE KNOCK SENSOR
a. Disconnect the sensor connector.
b. Remove the nut and sensor.
INSTALLATION
1. INSTALL KNOCK SENSOR
a. Install the sensor with the nut.
Torque:20 N.m (199 kgf.cm, 14 ft.lbf)
HINT: Angling the knock sensor the horizontal (below 0 degree) is recommended.
b. Connect the sensor connector.
2. INSTALL INTAKE MANIFOLD
a. Install a new gasket and the intake manifold with the 5 bolts and 2 nuts.
Torque:30 N.m (305 kgf.cm, 22 ft.lbf)
3. INSTALL THROTTLE BODY ASSEMBLY
4. INSTALL AIR CLEANER CAP WITH AIR CLEANER HOSE
5. ADD ENGINE COOLANT
6. CHECK ENGINE COOLANT LEAK
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE
3. REMOVE THROTTLE BODY ASSEMBLY
4. REMOVE INTAKE MANIFOLD
a. REMOVE the 5 bolts, 2 nuts, intake manifold and gasket.
5. REMOVE KNOCK SENSOR
a. Disconnect the sensor connector.
b. Remove the nut and sensor.
INSTALLATION
1. INSTALL KNOCK SENSOR
a. Install the sensor with the nut.
Torque:20 N.m (199 kgf.cm, 14 ft.lbf)
HINT: Angling the knock sensor the horizontal (below 0 degree) is recommended.
b. Connect the sensor connector.
2. INSTALL INTAKE MANIFOLD
a. Install a new gasket and the intake manifold with the 5 bolts and 2 nuts.
Torque:30 N.m (305 kgf.cm, 22 ft.lbf)
3. INSTALL THROTTLE BODY ASSEMBLY
4. INSTALL AIR CLEANER CAP WITH AIR CLEANER HOSE
5. ADD ENGINE COOLANT
6. CHECK ENGINE COOLANT LEAK
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.