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 DIAGNOSISLIGHTING AND HORNSAMBIENT LIGHT SENSORTESTING AND INSPECTION
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Ambient Light Sensor: Testing and Inspection
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Testing and Inspection
AUTOMATIC LIGHT CONTROL SENSOR
ON-VEHICLE INSPECTION
1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR
a. Connector connected.
b. Connect the wire harness side connector to the sensor and inspect wire harness side connector from the back side, as shown in the table.
HINT:
- Ignition switch ON.
- Light control switch AUTO.
- Vehicle's surroundings are bright.
If circuit is as specified, try replacing the sensor with a new one.
If the circuit is not as specified, inspect the circuit connected to other parts.
c. Connector disconnected.
d. Disconnect the connector from the sensor and inspect the connector on the wire harness side, as shown in the table.
If the circuit is not as specified, inspect the circuit connected to other parts.
ON-VEHICLE INSPECTION
1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR
a. Connector connected.
b. Connect the wire harness side connector to the sensor and inspect wire harness side connector from the back side, as shown in the table.
HINT:
- Ignition switch ON.
- Light control switch AUTO.
- Vehicle's surroundings are bright.
If circuit is as specified, try replacing the sensor with a new one.
If the circuit is not as specified, inspect the circuit connected to other parts.
c. Connector disconnected.
d. Disconnect the connector from the sensor and inspect the connector on the wire harness side, as shown in the table.
If the circuit is not as specified, inspect the circuit connected to other parts.
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.