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Home >> Toyota >> 2004 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 553 (Multiplex Communication System - Diagnostics) >> Circuit Inspection >> DTC B1241/41: Body ECU switch circuit diagnosis >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2003 Toyota Sequoia. 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 indicated when operating switch, it means failure of switch contact. If DTC is indicated when not operating switch, it means stick of switch. When something wrong is found by this diagnosis, inspect each switch. Replace the switch if there is a problem, or check the wire harness if there is no problem.

DTC Detection

DTC No. DTC Detecting Condition Trouble Area
B1241/41 Stick Of Switch Power Window Master Switch
NOTE: Please refer to Body Electrical section for switch inspection, and to each door system of Diagnostics section for wire harness inspection.