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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 464 (Driver Side Junction Block (Body No. 2 Control System) - Diagnosis) >> Circuit Inspection >> Illumination (Door courtesy switch signal) Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

Receiving the courtesy signal from the door ECU, the Driver side J/B ECU makes the switch illuminations and the meter illumination come on.

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