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post #1 of 3 (permalink) Old 03-11-2013, 12:32 PM Thread Starter
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2009 Cobalt - 3 Out of 4 Power Windows Don't Work

My mom has a 2009 Cobalt that she bought new. It is obviously now out of warranty.

Last week 3 out of 4 of the power windows stopped working. The driver's side works fine, but both passengers and the driver's side rear window now refuse to work. None of the non-working windows will operate from their respective switches nor from the drivers door panel.

When I depress the button the interior light does dim (indicating an electrical draw) and I hear the motors wanting to work in each door.

I checked the fuses in the passengers footwell and there were no issues there. I checked the driver's side switch for obvious issues. I didn't see any loose connectors nor damage to the circuit inside the switchbox (no water or blown bus).

Does anyone have an idea as to what may be the cause of this?

Thanks!!
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post #2 of 3 (permalink) Old 03-11-2013, 01:52 PM
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its usually the window switch on the drivers door messed up from wear or rain or anything. I had one vehicle and the wires broke in the drivers door jamb area so I had to pull the door all apart and fix the wiring harness

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post #3 of 3 (permalink) Old 03-11-2013, 06:03 PM
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Maybe only front passenger switch is bad and lock out is on for the back.

Circuit/System Verification
Ignition ON, command the driver window UP and DOWN using the driver window switch. The driver window should perform the UP and DOWN functions.
⇒ If the driver window does not perform the UP/DOWN function, refer to Driver Window Malfunction.

Command the each passenger window UP and DOWN using the window switches on the driver master control and the appropriate passenger door window switch. The each passenger window should perform the UP and DOWN functions from each switch.
⇒ If the front passenger window does not perform the UP/DOWN function, refer to Front Passenger Window Malfunction.

⇒ If either rear power windows do not perform the UP/DOWN function, refer to Rear Window Malfunction.

Disable and enable the rear window door switches by pressing and depressing the lockout switch on the driver master control. The rear door power window switches should be enabled and disabled when changing between the commanded states.
⇒ If both rear window switches continue to function while disabled, refer to Lockout Switch Malfunction.

Command the express down of the driver door window by pressing the driver window switch past the first detent and releasing. The driver window should perform the express down function.
⇒ If the function does not perform as specified, replace the driver window switch.

Circuit/System Testing
Driver Window Malfunction
Ignition OFF, disconnect the X2 harness connector at the driver window switch.
Test for less than 1 ohm between the ground circuit terminal B and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.

Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal E and ground.
⇒ If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

Ignition OFF, connect the harness connector at the driver window switch and disconnect the harness connector at the driver window motor.
Test for less than 1 ohm between the control circuit terminal A and ground.
⇒ If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

Test for less than 1 ohm between the control circuit terminal B and ground.
⇒ If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

Connect a test lamp between the control circuit terminal A and control circuit terminal B.
Ignition ON, command the driver door window UP and DOWN by using the driver window switch. The test lamp should illuminate when commanding the UP and DOWN states.
⇒ If the test lamp does not illuminate during either of the commands, test both control circuits for a short to ground. If the circuits test normal, test or replace the driver window switch.

If all circuits tests normal, test or replace the driver window motor.
Front Passenger Window Malfunction
Ignition OFF, disconnect the harness connector at the passenger window switch.
Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground.
⇒ If the test lamp does not illuminate, test the ignition circuit for an open/high resistance.

Ignition OFF, test for less than 1 ohm between the signal circuit terminal H and ground.
⇒ If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

Test for less than 1 ohm between the signal circuit terminal D and ground.
⇒ If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

Connect a test lamp between the signal circuit terminal D and signal circuit terminal H.
Ignition ON, command the front passenger door window UP and DOWN by using the RF window switch on the driver master control. The test lamp should illuminate when commanding the UP and DOWN states.
⇒ If the test lamp does not illuminate during either of the commands, test both signal circuits for a short to ground. If the circuits test normal, test or replace the driver window switch.

Ignition OFF, connect the harness connector at the passenger window switch and disconnect the harness connector at the passenger window motor.
Test for less than 1 ohm between the control circuit terminal A and ground.
⇒ If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the passenger window switch.

Test for less than 1 ohm between the control circuit terminal B and ground.
⇒ If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the passenger window switch.

Connect a test lamp between the control circuit terminal A and control circuit terminal B.
Ignition ON, command the passenger door window UP and DOWN using the passenger window switch. The test lamp should illuminate when commanding the UP and DOWN states.
⇒ If the test lamp does not illuminate during either of the commands, test either control circuit for a short to ground. If the circuits test normal, test or replace the passenger window switch.

If all circuits test normal, test or replace the passenger window motor.
Rear Window Malfunction
Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
Important: Verify the rear window switches are enabled by checking the lockout switch on the driver master control.

Ignition ON, verify that a test lamp illuminates between the control circuit terminal A and ground.
⇒ If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

Ignition OFF, test for less than 1 ohm between the signal circuit terminal D and ground.
⇒ If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

Test for less than 1 ohm between the signal circuit terminal H and ground.
⇒ If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

Connect a test lamp between the signal circuit terminal D and signal circuit terminal H.
Ignition ON, command the rear door window UP and DOWN using the window switch on the driver master control. The test lamp should illuminate when commanding the UP and DOWN states.
⇒ If the test lamp does not illuminate during either of the commands, test both signal circuits for a short to ground. If the circuits test normal, test or replace the driver window switch.

Ignition OFF, connect the harness connector at the rear window switch and disconnect the harness connector at the rear window motor.
Test for less than 1 ohm between the control circuit terminal A and ground.
⇒ If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the rear window switch.

Test for less than 1 ohm between the control circuit terminal B and ground.
⇒ If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the rear window switch.

Connect a test lamp between control circuit terminal A and control circuit terminal B.
Ignition ON, command the rear window UP and DOWN using the rear window switch. The test lamp should illuminate when commanding the UP and DOWN states.
⇒ If the test lamp does not illuminate during either of the commands, test both control circuits for a short to ground. If the circuits test normal, test or replace the rear window switch.

If all circuits test normal, test or replace the rear window motor.
Lockout Switch Malfunction
Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
Connect a test lamp between the control circuit terminal A and ground.
Command the rear window lockout ON and OFF by pressing and depressing the lockout switch on the driver master control. The test lamp should turn ON and OFF when changing between the commanded states.
⇒ If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the driver window switch.

⇒ If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the driver window switch

If all circuits test normal, test or replace the rear window switch.
Component Testing
Driver Window Switch
Ignition OFF, disconnect the harness connector at the driver window switch.
Test for less than 2 ohms between the control terminal F and the ignition terminal E with the lockout switch in the ENABLE position.
⇒ If greater than the specified value, replace the driver window switch

Test for infinite resistance between the control terminal F and the ignition terminal E with the lockout switch in the DISABLE position.
⇒ If less than the specified value, replace the driver window switch.

With the switches in the INACTIVE position, test for infinite resistance between the control terminals listed below and the ignition terminal E:
• Control terminal C

• Control terminal D

• Control terminal G

• Control terminal H

• Control terminal B

• Control terminal C

• Controll terminal A

• Control terminal E

⇒ If less than the specified value, replace the driver window switch.

With the appropriate switch in the UP position, test for less than 2 ohms between the control terminals listed below and the ignition terminal E:
• LR window switch control terminal D

• RR window switch control terminal G

• RF window switch control terminal B

• Driver window switch control terminal E

⇒ If greater than the specified range, replace the driver window switch.

With the switch in the DOWN position, test for less than 2 ohms between the control terminals listed below and the ignition terminal E:
• LR window switch control terminal C

• RR window switch control terminal H

• RF window switch control terminal C

• Driver window switch control terminal A

⇒ If greater than the specified range, replace the driver window switch.

Front Passenger Window Switch
Ignition OFF, disconnect the harness connector at the passenger window switch.
Test for infinite resistance between the control terminals G and F and the ignition terminal A with the switch in the INACTIVE position.
⇒ If less than the specified value, replace the passenger window switch.

Test for less than 2 ohms between the control terminal G and the ignition terminal A with the switch in the UP position.
⇒ If greater than the specified range, replace the passenger window switch.

Test for less than 2 ohms between the control terminal F and the ignition terminal A with the switch in the DOWN position.
⇒ If greater than the specified range, replace the passenger window switch.

Rear Passenger Window Switch
Ignition OFF, disconnect the harness connector at the appropriate window switch.
Test for infinite resistance between the control terminals F and G and the control terminal A with the switch in the INACTIVE position.
⇒ If less than the specified value, replace the window switch.

Test for less than 2 ohms between the control terminal G and the control terminal A with the switch in the UP position.
⇒ If greater than the specified range, replace the window switch.

Test for less than 2 ohms between the control terminal F and the control terminal A with the switch in the DOWN position.
⇒ If greater than the specified range, replace the window switch.

Window Motor
Ignition OFF, disconnect the harness connector at the appropriate window motor.
Install a 30A fused jumper wire between one of the control terminals and 12V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the window motor should perform the UP/DOWN functions.
⇒ If it does not perform as specified, replace the window motor.

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Last edited by Coby7; 03-11-2013 at 06:05 PM.
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