GM Service Manual Online
For 1990-2009 cars only

Object Number: 324026  Size: MF
Power Door Systems Components
Cell 120: Front Power Window Components
Handling ESD Sensitive Parts Notice

Circuit Description

The circuit for the passenger window switch on the LF door consists of the following components:

    • The LH front power window switch assembly.
    • The simple bus interface (SBI).
    • The driver door module (DDM).

The LH front power window switch is different from the other window switches. This switch contains an internal microprocessor. The LH front power window switch assembly reports all switch activity to the DDM. The diagnostic software for DTC B2216 is contained in the DDM. This diagnostic program runs once every 300 milliseconds. Faults involving the DDM or the SBI may set other DTCs and affect the operation of the power door locks or the outside rearview mirrors.

Conditions for Setting the DTC

DTC B2216 will be set current if the SBI messages from the LH front power window switch indicates that the switch has been in the UP position for 15 consecutive seconds. This diagnostic will not run if either DTC B1982 (battery voltage high) or DTC B1983 (battery voltage low) are set current.

Action Taken When the DTC Sets

This DTC is current only when the fault is present. While this DTC is current, the DDM will ignore actuation of the LH front power window switch.

Conditions for Clearing the DTC

    • This DTC will set from current to history when the window UP input cycles off or when the power mode changes from OFF to RUN.
    • A history DTC will clear after 50 cycles of the ignition switch.
    • Use a scan tool in order to clear a history DTC.

Diagnostic Aids

    • A history DTC is evidence of an intermittent condition.
    • If DTC B2216 is current, cycle the ignition switch from OFF to RUN. If the DTC is still current, perform the following diagnostic.

Test Description

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

  1. Perform the power door diagnostic system check before diagnosing DTC B2216.

  2. This test step checks for other set DTCs.

  3. This test step tests the operation of all the power windows.

  4. This test step tests the function of the LH front power window switch.

B2216 RR Switch on LF Door Stuck Up Position

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Door Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

Inspect the scan tool for the following DTCs.

    • B2200
    • B2201
    • B2212
    • B2213
    • B2214
    • B2215
    • B2216
    • B2217

Are all of the above DTCs set?

--

Go to Step 6

Go to Step 3

3

  1. Install the scan tool.
  2. Go to driver door module (DDM) special functions.
  3. Command all windows up and down with the scan tool.

Do all the windows function properly?

--

Go to Step 5

Go to Step 6

4

Replace the LH front power window switch.

Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

--

Go to Step 7

--

5

Turn the ignition ON. Press any driver door window switch, other than the one with the DTC set.

Does that switch operate the window properly?

--

Go to Step 4

Go to Diagnostic System Check - Power Door Systems

6

Replace the DDM.

Refer to Front Door Module Replacement .

Is the repair complete?

--

Go to Step 7

--

7

  1. Turn OFF the ignition.
  2. Reconnect or install any connectors or components that were disconnected or removed.
  3. Turn ON the ignition.
  4. Clear any DTCs.

Are all the DTCs cleared?

--

Go to Diagnostic System Check - Power Door Systems

--