GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Park Avenue 🢒 Body and Accessories 🢒 Doors 🢒 Power Window Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: The RF, RR, or LR power window is inoperative.

1

Did you perform the Power window system Check?

--

Go to Step 2

Go to Power Windows System Check

2
  1. Connect a scan tool.
  2. Select DATA from the driver door module (DDM) data list.
  3. Operate the door window switch to the UP and the DOWN positions.

Does the scan tool indicate that the switch operates properly?

--

Go to Step 5

Go to Step 3

3
  1. Disconnect the inoperative power window switch.
  2. Using a digital multimeter (DMM), measure the resistance between the window switch terminal 2 and terminal 4 while pressing the switch to the UP position.
  3. Using a DMM, measure the resistance between the window switch terminal 1 and terminal 4 while pressing the switch to the DOWN position.

Is the resistance within the specified range for both measurements?

0-5 ohms

Go to Step 5

Go to Step 4

4

Replace the power window switch. Refer to one of the following procedures:

Did you complete the repair?

--

Go to Power Windows System Check

--

5
  1. Disconnect the door module connector C1 at the malfunctioning door.
  2. Using a DMM, measure the resistance between the window switch harness connector terminal 4 and the door module harness connector C1 terminal:
    3. • RH front door terminal 10
    • RH rear door terminal B3
    • LH rear door terminal B9

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 13

Go to Step 6

6

Is the malfunction with the LH rear power window?

--

Go to Step 7

Go to Step 12

7
  1. Disconnect the rear fuse block connector C1.
  2. Using a DMM, measure the resistance between the window switch harness connector terminal 4 and the rear fuse block connector C1, terminal A1.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 9

Go to Step 8

8

Repair the open in CKT 1195 (PPL), Between the LH rear power window switch and the rear fuse block.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

9
  1. Disconnect the rear fuse block connector C2
  2. Using a DMM, measure the resistance between the rear fuse block connector C2, terminal A12 and the rear door module (RDM) connector C1, terminal B9.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 11

Go to Step 10

10

Repair the open in CKT 1195 (PPL), between the rear fuse block and the RDM.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

11

Replace the rear fuse block.

Is the repair complete?

--

Go to Power Windows System Check

--

12

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

    • RH front door -- CKT 1189
    • RH rear door -- CKT 1196

Is the repair complete?

--

Go to Power Windows System Check

--

13

Using a DMM, measure the resistance between the window switch harness connector terminal 2 and the appropriate door module harness connector C1 terminal:

    • RH front door terminal 8
    • RH rear door terminal B5
    • LH rear door terminal B7

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 20

Go to Step 14

14

Is the malfunction with the LH rear power window?

--

Go to Step 15

Go to Step 19

15
  1. Disconnect the rear fuse block connector C1.
  2. Using a DMM, measure the resistance between the window switch harness connector terminal 2 and the rear fuse block connector  C1, terminal A8.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 17

Go to Step 16

16

Repair the open in CKT 1185 (WHT), between the LH rear power window switch and the rear fuse block.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

17
  1. Disconnect the rear fuse block connector C2.
  2. Using a DMM, measure the resistance between the rear fuse block connector C2, terminal A5 and the RDM connector C1, terminal B7.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 11

Go to Step 18

18

Repair the open in CKT 1185 (WHT), between the rear fuse block and the RDM.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

19

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

    • RH front door -- CKT 1184
    • RH rear door -- CKT 1186

Is the repair complete?

--

Go to Power Windows System Check

--

20

Using a DMM, measure the resistance between the window switch harness connector terminal 1 and the appropriate door module harness connector C1 terminal:

    • RH front door terminal 9
    • RH rear door terminal B4
    • LH rear door terminal B8

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 27

Go to Step 21

21

Is the malfunction with the LH rear power window?

--

Go to Step 22

Go to Step 26

22
  1. Disconnect the rear fuse block connector C1.
  2. Using a DMM, measure the resistance between the window switch harness connector terminal 1 and the rear fuse block connector C1 terminal B12.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 24

Go to Step 23

23

Repair the open in CKT 1187 (YEL), between the LH rear power window switch and the rear fuse block.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

24
  1. Disconnect the rear fuse block connector C2.
  2. Using a DMM, measure the resistance between the rear fuse block connector C2, terminal B1 and the RDM connector C1, terminal B8.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 11

Go to Step 25

25

Repair the open in CKT 1187 (YEL) between the rear fuse block and the RDM.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

26

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

    • RH front door -- CKT 501
    • RH rear door -- CKT 1188

Is the repair complete?

--

Go to Power Windows System Check

--

27
  1. Disconnect the power window motor at the malfunctioning door.
  2. Using a DMM, measure the voltage between the window motor terminals A and B while pressing the malfunctioning door window switch in the up and down directions.

Does the voltage measure within the specified range?

10-15 V

Go to Step 28

Go to Step 29

28

Replace the power window motor.

Refer to Power Window Motor Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

29
  1. Disconnect the door module connector C2.
  2. Using a DMM, measure the resistance between the window motor harness connector terminal A and the door module harness connector C2 terminal:
    3. • RH front door terminal B
    • LH rear door terminal D
    • RH rear door terminal A

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 36

Go to Step 30

30

Is the malfunction with the LH rear power window?

--

Go to Step 31

Go to Step 35

31
  1. Disconnect the rear fuse block connector C2.
  2. Using a DMM, measure the resistance from the RDM connector C2 terminal D to the rear fuse block connector C2 terminal D10.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 33

Go to Step 32

32

Repair the open in CKT 669 (BRN). Between the RDM and the rear fuse block.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

33
  1. Disconnect the rear fuse block connector C1
  2. Using a DMM, measure the resistance from the rear fuse block connector C1 terminal D3 to the LH rear power window motor harness connector terminal A.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 11

Go to Step 34

34

Repair the open in CKT 669 (BRN), Between the rear fuse block and the LH rear power window motor.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

35

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

    • RH front door CKT 667.
    • RH rear door CKT 671.

Is the repair complete?

--

Go to Power Windows System Check

--

36

Using a DMM, measure the resistance between the window motor harness connector terminal B and the door module harness connector C2 terminal:

    • RH front door terminal C
    • RH rear door terminal H
    • LH rear door terminal E

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 43

Go to Step 37

37

Is the malfunction with the LH rear power window?

--

Go to Step 38

Go to Step 42

38
  1. Disconnect the rear fuse block connector C2.
  2. Using a DMM, measure the resistance from the RDM connector C2 terminal E to the rear fuse block connector C2 terminal B5.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 40

Go to Step 39

39

Repair the open in CKT 668 (DK BLU) between the RDM and the rear fuse block.

Refer to Wiring Repairs in Wiring systems.

Is the repair complete?

--

Go to Power Windows System Check

--

40
  1. Disconnect the rear fuse block connector C1.
  2. Using a DMM, measure the resistance from the rear fuse block connector C1 to the LH rear power window motor harness connector terminal B.

Does the resistance measure within the specified range?

0-5 ohms

Go to Step 11

Go to Step 41

41

Repair the open in CKT 668 (DK BLU), between the rear fuse block and the LH rear power window motor.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

42

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

    • RH front door -- CKT 666
    • RH rear door -- CKT 670

Is the repair complete?

--

Go to Power Windows System Check

--

43

Replace the door module at the malfunctioning door.

Refer to one of the following procedures:

Is the repair complete?

--

Go to Power Windows System Check

--