GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 LeSabre 🢒 Body 🢒 Doors 🢒 Power Window Inoperative - Passenger Door

Test Description

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

  1. This step checks to see that the door module associated with the inoperative window recognizes the switch input.

    Enabling the headlamps in this step eliminates the possibility of the window switch using an alternative path to ground through the switch illumination circuit, which could cause the scan tool to display incorrect window switch states.

    2.

  2. This step determines if the express down function of the window switch, if applicable, has failed.

    3.

  3. This step eliminates the battery positive voltage and ground circuits associated with door module connector C3 for the front passenger door or associated with door module connector C2 for a rear door as the cause.

    4.

  4. This step eliminates the window switch as the cause of the malfunction.

    5.

  5. This step eliminates the switch ground circuit as the cause.

    6.

  6. This step eliminates the switch up or down signal circuits as the cause.

Step

Action

Yes

No

Schematic References: Power Window Schematics and Door Control Module Schematics

Connector End View Reference: Master Electrical Component List in Wiring Systems

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Verify that the Power Windows Inoperative - Passenger Door complaint is present.

Do the passenger door windows operate as described in the Description and Operation?

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

Go to Step 3

3

  1. Install a scan tool.
  2. With the scan tool, observe the appropriate passenger Door Window SW. parameter for the inoperative window in the Driver Door Module Inputs list.
    3. • Pass. Door Window SW.
    • Lt. Rear Door Window SW.
    • Rt Rear Door Window SW.
  3. Turn ON the headlamps switch.
  4. Operate the passenger door window switch of the inoperative window to both the up and down positions.
  5. If applicable, operate the passenger door window switch of the inoperative window to the express down position.

Did the Door Window SW. parameter change from the Idle state to the Up, Down, and, if applicable, Express Down states as expected?

Go to Step 5

Go to Step 4

4

Is express down the only inoperative state?

Go to Step 16

Go to Step 9

5

  1. Turn OFF the ignition.
  2. Disconnect the appropriate harness connector from the door module that is associated with the inoperative window. This would be module connector C3 for the front passenger door or module connector C2 for a rear door.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp between the battery positive voltage circuit and the ground circuit of the connector.

Does the test lamp illuminate?

Go to Step 6

Go to Step 11

6
  1. Turn OFF the ignition.
  2. Connect the C2 or C3 harness connector.
  3. Disconnect the harness connector of the window motor associated with the inoperative window.
  4. Turn ON the ignition, with the engine OFF.
  5. Connect a test lamp between the power window motor up circuit of the harness connector and ground.
  6. Operate the passenger door window switch associated with the inoperative window to the up position.

Does the test lamp illuminate?

Go to Step 7

Go to Step 12

7
  1. Connect a test lamp between the power window motor down circuit of the harness connector and ground.
  2. Operate the passenger door window switch associated with the inoperative window to the down position.

Does the test lamp illuminate?

Go to Step 8

Go to Step 13

8
  1. Connect a test lamp between the power window motor up circuit and the power window motor down circuit of the harness connector.
  2. Operate the passenger door window switch associated with the inoperative window to both the up and down positions.

Does the test lamp illuminate for both the up and down positions?

Go to Step 17

Go to Step 18

9

Important: If the 3-amp fuse of the jumper wire opens when the jumper wire is connected, test the power window switch signal circuit for a short to battery positive voltage.

  1. Turn OFF the ignition.
  2. Disconnect the power window switch harness connector of the inoperative window.
  3. Connect a 3-amp fused jumper wire between the switch signal circuit of the inoperative window state and ground.
  4. Turn ON the ignition, with the engine OFF.

Does the Door Window SW. parameter indicate the inoperative state?

Go to Step 10

Go to Step 15

10

Connect the 3-amp fused jumper wire between the switch signal circuit of the inoperative window state and the switch ground circuit.

Does the Door Window SW. parameter indicate the inoperative state?

Go to Step 16

Go to Step 14

11

Test the battery positive voltage circuit for an open . Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 19

12

Test the power window motor up circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 18

13

Test the power window motor down circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 18

14

Test the power window switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 18

15

Test the power window switch signal circuit of the inoperative window state for a short to battery positive voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 18

16

Inspect for poor connections at the harness connector of the inoperative power 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 23

Go to Step 20

17

Inspect for poor connections at the harness connector of the inoperative power window motor. 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 23

Go to Step 21

18

Inspect for poor connections at the harness connector of the inoperative 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 23

Go to Step 22

19

Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 23

--

20

Replace the inoperative power window switch. Refer to Rear Side Door Window Switch Replacement or Front Door Switch Replacement .

Did you complete the replacement?

Go to Step 23

--

21

Replace the inoperative power window motor. Refer to Front Side Door Window Regulator Motor Replacement or Rear Side Door Window Regulator Motor Replacement .

Did you complete the replacement?

Go to Step 23

--

22

Replace the inoperative passenger door module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 23

--

23

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2