DTC B3527: Power Window Lock-Out Malfunction: Description

Window lock-out switch that failed and generated this Diagnostic Trouble Code (DTC) is integral to Driver Door Switch Assembly (DDSA). There are no external circuits involved. DDSA contains a microprocessor which takes ground signal generated by window lock-out switch and assigns a digital message. DDSA then sends this message over class 2 serial data line to Left Rear Door Module (LRDM) and Right Rear Door Module (RRDM) prohibiting window operation from either rear window switch. When lock-out is active, rear windows will not be operational from either rear window switch. Rear windows can still function using DDSA. When Driver Door Module (DDM) receives information that switch has been closed for 30 continuous seconds or more, DTC will be stored. When DTC is stored, DDM ignores inputs from window lock-out switch. DDM clears current DTC when message is no longer received from switch.