2010 Cadillac Truck Escalade RWD V8-6.2L Page 2838
U1500
The individual LIN bus will be inoperative, disabling all windows on one side of the vehicle.
U1500 31
The module refuses all additional inputs.
U1511
* If set in the driver door lock window switch or passenger door lock window switch, no window on the specific side of the vehicle will
operate if the open is before the first splice from the door module, and both DTC U1511 and U1512 should set. If open after the first splice,
the individual window will be inoperative and a single DTC should set.
* If set in the BCM, the compass is inoperative in the DIC.
U1512
No window on the specific side of the vehicle will operate if the open is before the first splice from the door module, and both DTC U1511 and
U1512 should set. If open after the first splice, the individual window will be inoperative and a single DTC should set.
Conditions for Clearing the DTC
* The current DTC will clear when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.
Diagnostic Aids
* A window regulator motor may cause a short to the local interconnect network bus circuit, and will cause all windows on one side to be
inoperative.
* An open/high resistance between the door module and the first splice from the module will cause all windows on one side to be inoperative.
* An open/high resistance between the window regulator motor and the first splice from the motor will cause only one window to be
inoperative.
Reference Information
Schematic Reference
* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical
Diagrams)
* Instrument Cluster Schematics (See: Diagrams/Electrical Diagrams/Instrument Panel, Gauges and Warning Indicators/System
Diagram/Instrument Cluster Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information
Bus/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Verify that DTC U1500 31 is not set,
瀚慖f the DTC is set, replace the appropriate window motor.
2. Verify that DTC U1511 is not set in the BCM.
