GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 CTS 🢒 DTC 🢒 DTC B3172, B3177, B3182, B3187, B3192, B3197, B3282, B3287, or B3292

Circuit Description

This DTC is generated by a passenger door window switch or a passenger door window switch circuit. Each passenger door window switch is mounted to the trim panel of the appropriate passenger door. The circuits and contacts of each passenger door window switch receive battery voltage and ground from the corresponding door module, i.e. front passenger door module (PDM), left rear door module (LRDM), or right rear door module (RRDM). When a passenger door window switch is operated, the switch contacts close and the associated door module interprets the flow of voltage as a specific request to move the window up or down. If conditions are correct for window operation to occur, the door module then powers the associated window motor and circuits to move the window.

DTC Descriptors

This diagnostic procedure supports the following DTCs:

    • DTC B3172 Right Front Window Up Switch Circuit Low
    • DTC B3177 Right Front Window Down Switch Circuit Low
    • DTC B3182 Left Rear Window Up Switch Circuit Low
    • DTC B3187 Left Rear Window Down Switch Circuit Low
    • DTC B3192 Right Rear Window Up Switch Circuit Low
    • DTC B3197 Right Rear Window Down Switch Circuit Low
    • DTC B3282 Right Front Window Express Up or Down Circuit Low
    • DTC B3287 Left Rear Window Express Up or Down Circuit Low
    • DTC B3292 Right Rear Window Express Up or Down Circuit Low

Conditions for Running the DTC

The PDM, LRDM, or RRDM must be powered and can not have B1327 Battery Voltage Low or B1328 Battery Voltage High set for one of these DTCs to set.

Conditions for Setting the DTC

If the PDM, LRDM, or RRDM detects that its associated window switch is closed for more than 15 continuous seconds, it sets the DTC.

Action Taken When the DTC Sets

The action taken depends on which switch contacts are closed:

    • If an up switch contact is closed for more than 15 seconds, both UP and DOWN movements are disabled until the UP switch contact is no longer closed, or the power mode changes from OFF to RUN.
    • If a down switch contact is closed for more than 15 seconds, only the DOWN movement is disabled until the DOWN switch contact is no longer closed, or the power mode changes from OFF to RUN. UP movement is operational regardless of the DOWN switch state.
    • If an express switch contact is closed for more than 15 seconds, the express movement is disabled until the express switch contact is no longer closed, or the power mode changes from OFF to RUN.

Conditions for Clearing the DTC

The PDM, LRDM, or RRDM clears the current DTC when the switch message is no longer received.

Diagnostic Aids

An intermittently sticking or binding switch may cause the DTC to set. Refer to Testing for Electrical Intermittents in Wiring Systems.

Test Description

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

  1. This step inspects the module input state by using the normal input status.

    2.

  2. This step inspects to see that the input is seen by the module.

    3.

  3. This step determines if the switch or the switch signal circuits between the switch and its associated module are shorted to ground.

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

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the Window Switch parameter in the Inputs list of the passenger door module that set the DTC.

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 Window Switch parameter for the appropriate passenger door.

Does the Window Switch parameter change state?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

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 appropriate window switch 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 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

Important: Perform the setup procedure for the replacement door module. Refer to Door Control Module Programming and Setup in Programming and Setup.

Replace the appropriate passenger door module. Refer to Control Module References in Computer/Integrating Systems.

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