GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: The RF, LR or RR power window is inoperative, the LF power window functions properly.

1

Was the Power Door System Diagnostic System Check performed?

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Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

  1. Connect a scan tool.
  2. Select the data from the left front door module (DDM) data list.
  3. Operate the window switches at the malfunctioning door in the up and down directions.

Does the scan tool indicate that the switch operates correctly?

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Go to Step 5

Go to Step 3

3

  1. Disconnect the power window switch at the malfunctioning door.
  2. Using a DMM, measure the resistance between window switch terminals 2 and 4 while pressing the switch in the down direction.
  3. Using a DMM, measure the resistance between window switch terminals 1 and 4 while pressing the switch in the up direction.

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 Front Door Switch Replacement or Rear Side Door Window Switch Replacement .

Is the replacement complete?

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Go to Diagnostic System Check - Power Door Systems

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5

  1. Disconnect the door module connector C1 at the malfunctioning door.
  2. Using a DMM, measure the resistance between window switch harness connector terminal 4 and door module harness connector terminal 10.

Is the resistance within the specified range?

0-5 ohms

Go to Step 7

Go to Step 6

6

Repair the open in the following circuits:

    • CKT 451 in the RH front door
    • CKT 551 in the RH rear door
    • CKT 551 in the LH rear door

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check - Power Door Systems

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7

Using a DMM, measure the resistance between window switch harness connector terminal 1 and door module harness connector terminal 8.

Is the resistance within the specified range?

0-5 ohms

Go to Step 9

Go to Step 8

8

Repair the open in the following circuits:

    • CKT 1184 in the RH front door
    • CKT 1185 in the RH rear door
    • CKT 1185 in the LH rear door

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check - Power Door Systems

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9

Using a DMM, measure the resistance between window switch harness connector terminal 2 and door module harness connector terminal 9.

Is the resistance within the specified range?

0-5 ohms

Go to Step 11

Go to Step 10

10

Repair the open in the following circuits:

    • CKT 1189 in the RH front door
    • CKT 1187 in the RH rear door
    • CKT 1187 in the LH rear door

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check - Power Door Systems

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11

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

Is the voltage within the specified range?

10-15 V

Go to Step 12

Go to Step 13

12

Replace the power window motor

Refer to Power Window Motor Replacement

Is the repair complete?

--

Go to Diagnostic System Check - Power Door Systems

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13

  1. Disconnect the door module connector C5.
  2. Using a DMM, measure the resistance between window motor harness connector terminal A and door module harness connector C5 terminal B.

Is the resistance within the specified range?

0-5 ohms

Go to Step 15

Go to Step 14

14

Repair the open in:

    • CKT  667 in the RH front door.
    • CKT 671 in the RH rear door.
    • CKT  669 in the LH rear door.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check - Power Door Systems

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15

Using a DMM, measure the resistance between window motor harness connector terminal B and door module harness connector C5 terminal C.

Is the resistance within the specified range?

0-5 ohms

Go to Step 17

Go to Step 16

16

Repair the open in:

    • CKT 666 in the RH front door.
    • CKT  670 in the RH rear door.
    • CKT 668 in the LH rear door.

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check - Power Door Systems

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17

Replace the door module at the malfunctioning door.

Refer to Door Control Module Replacement .

Is the repair complete?

--

Go to Diagnostic System Check - Power Door Systems

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