Express Up operation of the front door power windows is monitored and controlled by the front door modules and the window sensors. Each front door window motor has a window sensor mounted to it. The driver door module (DDM) and the passenger door module (PDM) each supply battery positive voltage and ground to power their respective window sensors. Each door module communicates with its sensor via a window sensor high speed communications circuit, and a window sensor normal speed communications circuit. The window sensor detects differences in the window motors electrical pulses to determine if there is an obstruction to the travel of the window glass. The door modules use the information generated by the sensors to disable the Express Up movement of a window, or reverse the direction of travel, in the event that a passenger, or other obstacle, has become trapped in it.

The window sensor normal speed communications circuit is a unique two-way serial data link between the door module and its sensor. The actual position of the window glass, in relationship to the distance traveled by the window, is communicated via this circuit, as well as state-of-health messages and window switch command status.

The door modules must be powered and can not have B1327-Battery Voltage Low or B1328-Battery Voltage High set for this DTC to set.

DTCs B3832 and B3833 indicate that a sensor does not know the actual position of its window glass and has sent a "Not Normalized/Not Initialized" message over the window sensor normal speed circuit to its corresponding door module. If the failure has occurred to the driver side window, the DDM detects it and sets the DTC. If the failure has occurred to the passenger side window, the PDM detects the failure first, and then relays the information to the DDM. The DDM then sets the DTC.

The DDM, or the PDM, will not allow the Express Up function for that window to operate. All other window functions for that window will still operate.

The DDM will clear the current DTC when either the DDM, or the PDM, detects that its corresponding sensor is no longer sending the message.

If DTC B3832 or B3833 are accompanied by DTCs U1714 or U1716, you should refer first to the diagnostic chart for DTCs U1714 and U1716. Refer to DTC U1714 or U1716 .

Also, DTCs B3832 or B3833 may be set and the Express Up function disabled If the vehicle or the door module has recently lost power for any reason. You should first attempt to re-initialize the Express Up function. Refer to Window Motor Programming - Express Function .

If, either DTC B3832 or B3833 is set by itself and the vehicle or door module has not recently lost battery power, it is likely that the window sensor itself has failed.

The numbers below refer to the step numbers on the diagnostic table.

2. When DTC B3832 or DTC B3833 are accompanied by DTCs U1713 or U1715, or, DTCs U1714 or U1716, a failure of the window sensor battery positive voltage circuit, or the window sensor low reference circuit, may be the cause. This step directs you to the correct diagnostic chart where these failures are addressed.

3. This step determines if the window is operational at all. The step does not ask the technician to attempt the Express Up movement because, when DTC B3832 or DTC B3833 is current, the door module disables the Express Up function.

4. This step addresses the possibility that the DTC may have been set, and Express Up disabled, because the vehicle door module has recently lost power due to a battery disconnect or other reason. Performing the window express programming procedure will eliminate this as the possible cause of the DTC.