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Home >> Toyota >> 2012 >> Highlander Limited, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System (Diagnostic Codes & Circuit Tests) (Except Hybrid) >> Lighting System >> DTC B1244: Light Sensor Circuit Malfunction >> Description

DTC B1244: Light Sensor Circuit Malfunction: Description

The automatic light control sensor detects ambient light, converts it into an electrical signal, and outputs it to the main body ECU. The main body ECU turns on or off the headlights and taillights according to the signal.

DTC No. DTC Detecting Condition Trouble Area
B1244
  • Malfunction in automatic light control sensor
  • Open or short in automatic light control sensor circuit
  • Automatic light control sensor
  • Harness or connector
  • Main body ECU (Instrument panel junction block)
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