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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Lighting System (Exterior) - Diagnostic Codes & Circuit Tests >> Lighting System >> Headlight Relay Circuit [08/2017 - 08/2019] >> Description

Headlight Relay Circuit [08/2017 - 08/2019]: Description

The main body ECU (multiplex network body ECU) receives light control switch information signals and illuminates the low beam headlights.

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