GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Park Avenue 🢒 DTC 🢒 DTC B2204 LR Window Switch Stuck in Up Position

Schematic

Refer to Power Window Schematics

Rear Power Window Components


Object Number: 626574 Size: FS
Power Door Systems Components
Power Windows Operation
Front Power Window Components
 .

Circuit Description

The simple bus interface provides a communications path from both the passenger door and rear door modules to the driver door module (DDM). The DDM contains the following two types of software:

    • Switch message decoding software
    • Simple bus interface diagnostic software

The software enables the DDM to monitor the rear door power window switch states.

The switch setting this DTC is wired to the rear door module.

Conditions for Running the DTC
    • All modules in the circuit must be powered.
    • DTCs B1982 (battery voltage high) and B1983 (battery voltage low) must not be set as current DTCs.
    • All modules in the circuit must be communicating (no communications DTCs set as current).

Conditions for Setting the DTC

DTC B2204 will set any time the left rear power window switch is continuously closed in the UP position for a period greater than 15 seconds.

DTCs B1982 (Battery Voltage High) and B1983 (Battery Voltage Low) must not be current or the diagnostic will not run.

Action Taken When The DTC Sets

The switch command will be ignored until it again changes state.

Conditions For Clearing The DTC
    • This DTC will set from current to history when the window up input cycles off.
    • The history DTC will clear after 50 ignition cycles.

Diagnostic Aids
    • A history DTC is evidence of an intermittent problem.
    • When DTC B2204 is current, cycle the ignition switch from OFF to RUN. If the DTC is still present, perform the following diagnostic procedure.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. Check the module input state using the normal input status.

    2.

  2. Check to see that the input is seen by the module.

    3.

  3. Check to see that the signal lines to the module are open with the switch removed.

    4.

  4. Check to see that the signal circuits are not shorted.

Step

Action

Yes

No

1

Did you perform A Diagnostic System Check - Door Systems?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the Door Window Switch parameter for the appropriate passenger door in the driver door module (DDM) data list.

Does the scan tool display Idle?

Go to Step 3

Go to Step 4

3
  1. Activate the appropriate passenger door window switch.
  2. With the scan tool, observe the Door Window Switch parameter for the appropriate passenger door.

Does the Door Window Switch parameter change from Idle to Up and Down?

Go to Diagnostic Aids

Go to Step 4

4

  1. Turn OFF the ignition.
  2. Disconnect the appropriate passenger door window switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Door Window Switch parameter for the appropriate passenger door.

Does the scan tool display Idle?

Go to Step 7

Go to Step 5

5

Test the signal circuits of the appropriate passenger door window switch 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 10

Go to Step 6

6

Inspect for poor connections at the harness connector of the appropriate passenger door 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 10

Go to Step 8

7

Inspect for poor connections at the harness connector of the appropriate passenger door window switch. 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 10

Go to Step 9

8

Replace the appropriate passenger door control module. Refer to Door Control Module Replacement - Front or Door Control Module Replacement - Rear .

Did you complete the replacement?

Go to Step 10

--

9

Replace the appropriate passenger door window switch. Refer to Front Door Switch Replacement or Rear Side Door Window Switch Replacement .

Did you complete the replacement?

Go to Step 10

--

10
  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