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 MANUALSTOYOTA2006SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSKNOCK SENSORTESTING AND INSPECTION
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Knock Sensor: Testing and Inspection
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Testing and Inspection
INSPECTION
1. REMOVE THROTTLE BODY COVER
2. REMOVE INTAKE AIR CONNECTOR
3. REMOVE INTAKE MANIFOLDS ASSEMBLY
4. INSPECT KNOCK SENSOR 1 AND 2
a. Disconnect the knock sensor connectors.
b. Using an ohmmeter, measure the resistance between terminals.
Resistance:
120 to 280 kOhms at 20 degree C (68 degree F)
HINT: If the resistance is not as specified, replace the sensor.
5. REMOVE KNOCK SENSOR
a. Disconnect the 2 knock sensor connectors.
b. Remove the 2 nuts and 2 knock sensors.
6. INSTALL KNOCK SENSOR
a. Install the 2 knock sensors with the 2 nuts as shown in the illustration.
Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
b. Connect the 2 knock sensor connectors.
7. INSTALL INTAKE MANIFOLDS ASSEMBLY
8. INSTALL INTAKE AIR CONNECTOR
9. INSTALL THROTTLE BODY COVER
1. REMOVE THROTTLE BODY COVER
2. REMOVE INTAKE AIR CONNECTOR
3. REMOVE INTAKE MANIFOLDS ASSEMBLY
4. INSPECT KNOCK SENSOR 1 AND 2
a. Disconnect the knock sensor connectors.
b. Using an ohmmeter, measure the resistance between terminals.
Resistance:
120 to 280 kOhms at 20 degree C (68 degree F)
HINT: If the resistance is not as specified, replace the sensor.
5. REMOVE KNOCK SENSOR
a. Disconnect the 2 knock sensor connectors.
b. Remove the 2 nuts and 2 knock sensors.
6. INSTALL KNOCK SENSOR
a. Install the 2 knock sensors with the 2 nuts as shown in the illustration.
Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
b. Connect the 2 knock sensor connectors.
7. INSTALL INTAKE MANIFOLDS ASSEMBLY
8. INSTALL INTAKE AIR CONNECTOR
9. INSTALL THROTTLE BODY COVER
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.