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Home >> Lexus >> 2003 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 422 (Power Window Control System - Diagnostics) >> DTC B2221 Jam Protection Pulse Sensor Circuit On Back Door >> Auto Up/Down Function Does Not Operate >> Circuit Description >> Notes
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Circuit Description: Notes

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

The back door ECU monitors the condition of the power window motor to detect the position of the door glass by using pulse signals output from the 2 pulse sensors in the power window motor.

Fig 1: DTC B2221 Jam Protection Pulse Sensor Specifications
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