Test C: All Windows Are Inoperative
- Check For An Active Switch - Ensure all window switches are not pressed. Using NGS tester, clear Driver Door Module (DDM) DTCs and perform DDM Self-Test. If DTC B1549 is not retrieved, go to next step. If DTC B1549 is retrieved, go to step 3).
- Check For A Stuck Switch - Using NGS tester, select and monitor DDM PIDs, RRPW_SW, LRPW_SW, P_PW_SW, and D_PW_SW. Press and release each driver door window control switch several times. If each PID does not indicate that the button releases within one second from when switch is released, go to next step. If each PID indicates that the button releases within one second from when switch is released, check for a sticking switch. Continuous fault will set if any window switch is held for more than 2 minutes.
- Check Driver Door Module (DDM) - Using NGS tester, select and monitor DDM PIDs, RRPW_SW, LRPW_SW, P_PW_SW, and D_PW_SW. Remove driver door module from lower front corner of driver door (without disconnecting any connectors). If the PID still indicates a stuck window control switch, replace driver door module and retest system operation. If the PID does not indicate a stuck window control switch anymore, replace driver door window control switch bezel and retest system operation.