GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2002 🢒 Seville 🢒 DTC 🢒 DTC B3172, B3177, B3182, B3187, B3192, B3197, B3282, B3287, or B3292

Circuit Description

The window switch that failed and generated this diagnostic trouble code (DTC) is mounted on one of the passenger doors and wired to the associated passenger door module. When the switch is activated, the passenger door module examines the switch signal and determines if conditions are correct for that window function to occur. If conditions are correct, the passenger door module then supplies power and ground to the associated window motor and circuits to operate the window. The window motors are reversible. When an Up movement is requested, the module applies battery positive voltage to the Up circuit and ground to the Down circuit. When a Down movement is requested, the module reverses the polarity, and applies battery positive voltage to the Down circuit, and ground to the Up circuit.

Conditions for Running the DTC

The passenger door module 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 driver door module (DDM) receives a message from a passenger door module indicating that a window switch is closed for more than 15 continuous seconds, the DDM 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, the DOWN movement only is disabled until the DOWN switch contact is no longer closed, or, the power mode changes from OFF to RUN. UP movements are permitted 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.

Conditions for Clearing the DTC

The DDM clears this current DTC when the switch message is not received, or when the module power mode changes from OFF to RUN.

Test Description

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

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

    2.

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

    3.

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

    4.

  4. Checks to see if the signal circuits are shorted to ground.

Step

Action

Yes

No

Schematic Reference: Power Window Schematics and Door Control Module Schematics

1

Did you perform the Door Systems Diagnostic System Check?

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) Inputs 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 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 circuit(s) 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 .

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