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Wiper Signal Circuit: Description

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

When the distance control ECU (cruise control ECU) detects that the wipers are operating, the dynamic radar cruise control system will be canceled.

HINT:

A wiper switch signal is sent to the distance control ECU via the CAN and BEAN. If there are any malfunctions in this circuit, check for DTCs in the CAN communication and multiplex communication systems. When the wiper is in the HI mode, the dynamic radar cruise control is automatically canceled and goes into the standby mode.

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