GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The driver door module (DDM) and passenger door module (PDM) are responsible for checking 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 will be set. For more detailed information concerning power window operation refer to Power Windows Description and Operation .

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1011 System Disabled Information Stored

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

The DDM or PDM detects window motor temperature above the normal operating range.

Action Taken When the DTC Sets

    • Window indexing down is still functional.
    • Normal functional requests are possible until the window is completely closed.

Conditions for Clearing the DTC

    • The condition responsible for setting the DTC no longer exists.
    • You issue a scan tool CLEAR DTCs command.

Diagnostic Aids

The following conditions may cause an intermittent malfunction:

    • An intermittent sticking or binding condition on a window causing excessive current draw resulting in a critical temperature fault
    • An internally shorted window motor
    • Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

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 Diagnostic System Check - Vehicle?

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

Replace the appropriate door module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.

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