The BCM can be diagnosed by using the GDS. The BCM communicates with the GDS which then displays inputs and outputs along with codes.
It will be able to diagnose defects of power door lock/unlock with GDS quickly. GDS can operates actuator forcefully, input/output value monitoring and self diagnosis.
To diagnose the SJB function, select the vehicle model, BCM and DDM.
Select "Input/output monitoring", if you will check current data of power door lock system. It provides input/output status of DDM.
To perform functional test on SJB outputs, select "Actuation Test".
Disconnect the negative (-) battery terminal.
Remove the front door trim.
(Refer to Body - "Front Door Trim")
Remove the power window switch assembly (A) after loosening the mounting screws.
Install the power window switch assembly.
Install the front door trim after connect the connector.