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Home >> Scion >> 2014 >> FR-S Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Exterior) (Diagnostic Codes & Circuit Tests) >> 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 (network gateway ECU). The main body ECU (network gateway ECU) turns on or off the headlights and taillights according to the signal.

DTC No. DTC Detection Condition Trouble Area
B1244
  • Malfunction in automatic light control sensor.
  • Open or short in automatic light control sensor circuit.
  • Automatic light control sensor
  • Main body ECU (Network gateway ECU)
  • Harness or connector
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