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Home >> Lexus >> 2009 >> IS 250 RWD, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting (Diagnostic Codes & Circuit Tests) >> Lighting System >> Door Courtesy Switch Circuit >> Description

Door Courtesy Switch Circuit: Description

The main body ECU RH detects the condition of each door courtesy switch and sends a signal to each ECU via the multiplex communication circuit.

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