GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 XLR 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 DTC B1011

Circuit Description

The driver door module (DDM) and passenger door module (PDM) check the critical temperature of their respective window motors at least once every 50 milliseconds. When the DDM or PDM detects a critical temperature in the window motor, a DTC is set. Normal functional requests are possible until the window is completely closed, then the window is inoperative. Window indexing down is still functional.

DTC B1011 System Disabled Information Stored

Conditions for Setting the DTC
    • The DDM or PDM detects a critical temperature of the power window motor.
    • Battery voltage must be 9.0-16.0 volts.

Action Taken When the DTC Sets
    • Stores DTC B1011 in DDM or PDM memory.
    • Normal functional requests are possible until the window is completely closed, then only window indexing down is possible.

Conditions for Clearing the DTC
    • The DDM or PDM no longer detects DTC B1011 in DDM or PDM memory, and:
    • The DTC is cleared using a scan tool.

Diagnostic Aids
    • The following conditions may cause an intermittent malfunction:
       - There is an intermittent sticking or binding condition on a window causing excessive current draw resulting in a critical temperature fault.
       - A window motor is shorted internally.
    • If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Test Description

The number below refers to the step number on the diagnostic table.

  1. Tests the window for a sticking or binding condition.

Step

Action

Yes

No

Schematic Reference: Power Window Schematics and Door Control Module Schematics

Connector End View Reference: Power Door Systems Connector End Views

1

Did you perform the Vehicle Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Inspect the appropriate window for a sticking or binding condition.

Did you find and correct the condition?

Go to Step 5

Go to Step 3

3

Inspect for poor connections at the harness connector of the appropriate door module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 5

Go to Step 4

4
  1. Perform the power window reinitialization procedure. Refer to Power Window Reinitialization
  2. Replace the appropriate door module. Refer to Door Control Module Replacement .

Did you complete the replacement?

Go to Step 5

--

5
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK