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.

These DTC notify how switch works as follows:

If DTC is not output when operating switch, it means failure of switch contact. If DTC is output when not operating switch, it means stick of switch. When something wrong is found by this diagnosis, inspect each switch.

Then, replace the switch if there is a problem, or check the wireharness if there is no problem.

DTC CONDITION DETECTION CHART

DTC No.	DTC Detecting Condition	Trouble Area
B1226	Stick of power window switch	Power window switch Wire harness

HINT:

Please refer to BE section for switch inspection.