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 SYSTEMSOXYGEN SENSORTESTING AND INSPECTIONCOMPONENT INSPECTION
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Component Inspection
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Component Inspection
INSPECTION
1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Disconnect the oxygen sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT.
Resistance: 11 to 16 ohms at 20 degree C (68 degree F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N.m (450 kgf.cm, 32 ft.lbf)
c. Reconnect the oxygen sensor connector.
2. INSPECT OPERATION OF HEATED OXYGEN SENSOR
1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Disconnect the oxygen sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT.
Resistance: 11 to 16 ohms at 20 degree C (68 degree F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N.m (450 kgf.cm, 32 ft.lbf)
c. Reconnect the oxygen sensor connector.
2. INSPECT OPERATION OF HEATED OXYGEN SENSOR
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.