GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2000 🢒 Seville 🢒 DTC 🢒 DTC B2242 Memory Exit Switch Failed

Object Number: 576288 Size: MF

Circuit Description

The LH Front Power Window Switch receives an input from the memory function switch memory exit switch through a simultaneous memory 1 and memory 2 input when the button is pressed. The LH Front Power Window Switch recognizes the input and sends a message on the Simple Bus Interface (SBI) to the driver door module indicating that the memory exit button has been pressed. The driver door module then sends a message via the Class 2 Serial Data Line to the Memory Seat Module (MSM), the Steering Column Tilt/Telescoping Module (TTM), and the Radio (IRC) indicating that the memory exit button has been pressed.

Conditions for Setting the DTC
    •  When the memory exit switch is active for 30 seconds continuously, the switch will be considered shorted and the DTC will set.
    • DTC B2242 will set only if DTC B1982 DDM or DTC B1983 DDM is not current.

Action Taken When the DTC Sets
    • The driver door module will no longer respond to memory exit switch inputs.
    • Because the memory exit button is an input on the memory 1 and memory 2 inputs to the driver door module, the memory 1 and memory 2 functions will no longer operate.
    • The driver door module will continue to respond to valid inputs from the other memory function switches.

Conditions for Clearing the DTC
    • The driver door module sees that the memory exit switch is no longer active.
    • A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
    • Use the On-Boards clearing DTCs feature.
    • Use a scan tool.

Test Description

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

  1. Perform the Power Door Diagnostic System Check before continuing with the diagnosis of this DTC.

    2.

  2. Clear all DTCs and cycle ignition to check that the DTC did not falsely set.

    3.

  3. Clear all DTCs after the repair procedure is complete.

DTC B2242 Memory Exit Switch Failed

Step

Action

Value(s)

Yes

No

1

Did you perform Diagnostic System Check - Power Door Systems ?

--

Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

  1. Turn ON the ignition switch.
  2. Connect a scan tool to the data link connector (DLC).
  3. Clear any DTCs. Refer to Diagnostic Trouble Code (DTC) Clearing.
  4. Turn OFF the ignition switch.
  5. Turn ON the ignition switch.

After 30 seconds, does the DTC reset?

--

Go to Step 3

Go to Diagnostic System Check - Power Door Systems

3

Replace the memory function switch.

Is the repair complete?

--

Go to Step 4

--

4

  1. Turn OFF the ignition switch.
  2. Reconnect or install any connectors or components that were disconnected or removed.
  3. Turn ON the ignition switch.
  4. Clear any DTCs. Refer to Diagnostic Trouble Code (DTC) Clearing.

Are all DTCs cleared?

--

Go to Diagnostic System Check - Power Door Systems

--