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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 ((Driver Door Module (DDM) (DMFL/R) - Electrical Diagnostics)) >> DTC Troubleshooting >> U113D-00-Lost Communication With Master Power Window Switch >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
(Q291) DOOR MODULE FEED TO DOOR SWITCH OPEN
(D903) DRIVER DOOR LIN BUS CIRCUIT SHORT TO GROUND
(D903) DRIVER DOOR LIN BUS CIRCUIT SHORT TO VOLTAGE
(D903) DRIVER DOOR LIN BUS CIRCUIT OPEN
(D512) DRIVER DOOR LIN BUS RETURN CIRCUIT OPEN
DRIVER WINDOW SWITCH
DRIVER DOOR MODULE (DDM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.  Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .