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

Circuit Description

Battery positive voltage is supplied to the folding top control (FTC) module from the BAT MAIN 2 fuse. When commanded, this voltage is used by the FTC module to power the folding top pump motor through the motor control circuits. When an overcurrent condition is detected, the FTC module disables the folding top pump motor in order to protect the internal FTC module circuitry.

DTC Descriptor

This diagnostic procedure supports the following DTC.

DTC B1011 System Disabled Information Stored

Conditions for Running the DTC

The FTC module monitors for overcurrent only when the power folding top pump motor is active.

Conditions for Setting the DTC

The FTC module will set DTC B1011 when the measured current exceeds 81-amps for 100 milliseconds.

Action Taken When the DTC Sets
    • All folding top functions in progress are aborted, including calibrations of the folding top.
    • The FTC module will suspend operation of the folding top pump motor.

Conditions for Clearing the DTC
    • The DTC will clear on the current status after the condition for setting the fault is corrected.
    • A history DTC will clear after 50 consecutive ignition cycles without a fault present.
    • A history and current DTC can be cleared using the scan tool.

Diagnostic Aids

Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This test determines if the suspect motor has an internal short to ground.

    2.

  2. This test verifies the repair.

Step

Action

Yes

No

Schematic Reference: Folding Top Schematics

Connector End View Reference: Power Roof Systems Connector End Views

1

Did you perform the Vehicle Control Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the Current Diagnostic Trouble Codes in the Folding Top Control (FTC) module Diagnostic Trouble Codes list.
  4. Operate the power folding top in both directions.

Did the scan tool display DTC B1011?

Go to Step 3

Go to Diagnostic Aids

3

  1. Disconnect the folding top pump motor harness connector.
  2. With a scan tool, observe the Current Diagnostic Trouble Codes.
  3. Operate the folding top pump motor in both directions.

Does the scan tool display DTC B1011?

Go to Step 4

Go to Step 5

4

Test the motor control circuits of the folding top pump motor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 6

5

Inspect for poor connections at the harness connector of the folding top pump motor. 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 9

Go to Step 7

6

Inspect for poor connections at the harness connector of the folding top control 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 9

Go to Step 8

7

Replace the folding top pump motor. Refer to Folding Top Pump with Motor Replacement .

Did you complete the replacement?

Go to Step 9

--

8

Important: Perform the setup procedure for the FTC module.

  1. Replace the FTC module. Refer to Folding Top Control Module Replacement .
  2. Perform the setup procedure for the FTC module. Refer to Power Folding Top Learn .

Did you complete the replacement?

Go to Step 9

--

9

  1. Clear the DTCs using the scan tool.
  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