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Home >> Toyota >> 2003 >> 4Runner Limited, 4.7 T, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Back Door Power Window Control System - Diagnostics >> DTC B2221 Jam Protection Pulse Sensor Circuit On Back Door >> Auto Up/Down Function Does Not Operate >> Circuit Description

Circuit Description

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 Condition & Suspected Parts Table
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