GM Service Manual Online
For 1990-2009 cars only

Refer to:

    • 

LH Power Windows


Object Number: 491473  Size: FS
Power Door Systems Components
Power Windows Circuit Description
RH Power Windows
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Serial Data Class 2 (3 of 3)
LH Rear Door Power Door Lock
Rear Door Dimming
Driver Door Power Door Lock
Memory Function Switch
Front Door Dimming
    • 

RH Power Windows


Object Number: 491476  Size: FS
Power Door Systems Components
Power Windows Circuit Description
LH Middle Door Power Window
LH Power Windows
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Serial Data Class 2 (2 of 3)
Serial Data Class 2 (2 of 3)
Right Rear Door Power Door Lock (w/o B9Q)
Rear Door Dimming
Passenger Front Door Power Door Lock
Front Door Dimming
    • 

LH Middle Door Power Window


Object Number: 525866  Size: FS
Power Door Systems Components
Power Windows Circuit Description
RH Middle Door Power Window
RH Power Windows
Handling ESD Sensitive Parts Notice
G302-V4U/B9Q
LH Middle Door Power Door Lock (w/V4U)
G302-V4U/B9Q CKT 551
    • 

RH Middle Door Power Window


Object Number: 525867  Size: FS
Power Door Systems Components
Power Windows Circuit Description
LH Middle Door Power Window
Handling ESD Sensitive Parts Notice
G302-V4U/B9Q
G302-V4U/B9Q
RH Middle Door Power Door Lock (w/ V4U)
G201-V4U/BQ9

Circuit Description

The switch that failed and generated this diagnostic trouble code (DTC) is one of the window switches that is mounted locally in one of the passenger doors. The passenger front door module (PFDM), left rear door module (LRDM), and right rear door module (RRDM) each have a window switch that is wired to its associated door module. Each module contains a microprocessor which takes the ground signals generated by its switch, processes them, and then determines a course of action. If conditions are correct for window movement to take place, the appropriate door module then supplies battery voltage and ground to the appropriate window motor circuits to move the window Up or Down.

Conditions for Running the DTC

The PFDM, LRDM, and the RRDM must be powered and cannot have codes B1327-Battery Voltage Low or B1328-Battery Voltage High set for this DTC to set.

Conditions for Setting the DTC

If the PFDM, LRDM, or RRDM, receives a message indicating that a window switch Up contact is grounded for more than 15 continuous seconds, the DTC will set.

Action Taken When the DTC Sets

If the DTC is current, the PFDM, LRDM, or RRDM will ignore both the UP and Down inputs from the failed switch until the input is no longer detected.

Conditions for Clearing the MIL/DTC

The PFDM, LRDM, or RRDM clears the DTC when the input is not detected for 60 seconds, or, when the ignition is cycled from OFF to RUN.

Diagnostic Aids

A sticking switch can cause this DTC to set.

Test Description

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

  1. Checks the existing state of the power window switch by using the current state of the input parameter.

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check - Power Door Systems?

--

Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

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

Does the scan tool display Idle?

--

Go to Step 3

Go to Step 4

3

  1. Activate the window switch of the door that set the code.
  2. Using the scan tool, observe the Window Switch Inputs parameter.

Does the Window Switch Inputs parameter change state?

--

Go to Diagnostic Aids

Go to Step 4

4

  1. Turn OFF the ignition.
  2. Disconnect the window switch of the door that set the code.
  3. Turn ON the ignition with the engine OFF.
  4. Using the scan tool, observe the Window Switch Inputs parameter.

Does the scan tool indicate the Idle state?

--

Go to Step 7

Go to Step 5

5

Test the window up input circuit of the door that set the code 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/terminal tension at the door module harness connector of the door that set the code. 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/terminal tension at the window switch harness connector of the door that set the code. 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 door module of the door that set the code. Refer to Door Control Module Replacement .

Did you complete the replacement?

--

Go to Step 10

--

9

Replace the window switch of the door that set the code. 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