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Back-Up Light <--> [Backup Lamp] > < Automatic Light Control Sensor <--> [Ambient Light Sensor]|Testing and Inspection

Camry LE Sedan L4-2164cc 2.2L DOHC (5S-FE) MFI (2000)

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INSPECT AUTOMATIC LIGHT CONTROL SENSOR CIRCUIT
Connector disconnected:
Connect the wire harness side connector to the sensor and inspect wire harness side connector from the back side, as shown.

HINT: 

-

Ignition switch ON.

-

Light control switch OFF.

-

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.

Back-Up Light <--> [Backup Lamp] > < Automatic Light Control Sensor <--> [Ambient Light Sensor]|Testing and Inspection