GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2002 🢒 DeVille 🢒 Body and Accessories 🢒 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 window switch input.

    2.

  2. This step eliminates the door module battery positive voltage and ground circuits associated with door module connector C1 as the cause.

    3.

  3. This step begins to determine if the window motor control circuits, the window motor, or the door module outputs may be the cause of the malfunction.

    4.

  4. This step eliminates the window switch ground and Up signal circuits as the cause of the malfunction. The step also begins to determine if the window switch may be at fault.

    If the 3 amp jumper wire fuse opens when the jumper wire is connected, the window switch Up signal circuit may be shorted to battery positive voltage.

    5.

  5. This step eliminates the window switch Down signal circuit as the cause of the malfunction. The step also continues to determine if the window switch may be at fault.

    If the 3 amp jumper wire fuse opens when the jumper wire is connected, the window switch Down signal circuit may be shorted to battery positive voltage.

    6.

  6. This step determines if the window switch is at fault, or if the cause of the malfunction is in the window switch Express signal circuit or door module.

    If the 3 amp jumper wire fuse opens when the jumper wire is connected, the window switch Express signal circuit may be shorted to battery positive voltage.

Step

Action

Yes

No

Schematic Reference: Power Window Schematics and Door Control Module Schematics

DEFINITION: A passenger door window fails to operate from a passenger door window switch, or, fails to operate from both the passenger door window switch and the driver door switch assembly (DDSA). If the front passenger door window is inoperative in only the Express Up direction, refer to Power Window Express Up Function Inoperative .

1

Did you Perform the Door Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

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. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, select the passenger door module associated with the inoperative power window.
  4. With the scan tool, observe the Window Switch Inputs parameter.
  5. Operate the passenger door window switch associated with the inoperative window to the Up, Down, and Express Down positions.

Did the Window Switch Inputs parameter change from the Idle state to the Up, Down, and Express Down states as expected?

Go to Step 4

Go to Step 8

4

  1. Turn the ignition OFF.
  2. Disconnect the C1 harness connector of the door module associated with the inoperative window.
  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 harness connector.

Does the test lamp illuminate?

Go to Step 5

Go to Step 11

5

  1. Turn OFF the ignition.
  2. Connect the C1 harness connector of the door module.
  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 window motor Up circuit of the harness connector and a good 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 6

Go to Step 12

6
  1. Connect a test lamp between the window motor Down circuit of the harness connector and a good 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 7

Go to Step 12

7
  1. Connect a test lamp between the window motor Up circuit and the 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 16

Go to Step 17

8

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

Does the Window Switch Inputs parameter indicate Up?

Go to Step 9

Go to Step 13

9

  1. Turn the ignition OFF.
  2. Connect a 3 amp fused jumper wire between the switch ground circuit and the switch Down signal circuit of the harness connector.
  3. Turn ON the ignition, with the engine OFF.

Does the Window Switch Inputs parameter indicate Down?

Go to Step 10

Go to Step 14

10

  1. Make sure the 3 amp fused jumper wire is still connected between the switch ground circuit and the switch Down signal circuit of the harness connector.
  2. Connect an additional 3 amp fused jumper wire between the switch ground circuit and the switch Express signal circuit of the harness connector.

Does the Window Switch Inputs parameter indicate Express Down?

Go to Step 15

Go to Step 14

11

Test the battery positive voltage circuit of connector C1 for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 18

12

Test the window motor control circuits of the inoperative window for shorts to ground, shorts to each other, and opens. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 17

13

Test the ground circuit, of the inoperative switch, for an open circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 14

14

Test the appropriate signal circuits, of the inoperative switch, for an open or a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 17

15

Inspect for poor connections at the harness connector of the inoperative power window switch. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 19

16

Inspect for poor connections at the harness connector of the inoperative window motor. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 20

17

Inspect for poor connections at the harness connector of the inoperative door module. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 21

18

Repair the open ground circuit of connector C1. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

--

19

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

Did you complete the replacement?

Go to Step 22

--

20

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

Did you complete the replacement?

Go to Step 22

--

21

Replace the inoperative door module. Refer to Door Control Module Replacement .

Did you complete the replacement?

Go to Step 22

--

22

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2