For 1990-2009 cars

### Test Description

The number below refers to the step number on the diagnostic table.

If the rear passenger power windows operate properly from the main switch the accessory voltage and ground circuits can be presumed good.

1. The rear passenger power window switches on the main switch share common accessory voltage and ground circuits with the front windows.

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the Power Windows Description and Operation? | -- | Go to Step 2 | Go to Power Windows Description and Operation
2 |

1. Turn ON the ignition, with the engine OFF.
2. Operate the front power windows from the main power window switch.
3. Operate all power windows from all power window switches.

Did all the power windows operate from all power window switches correctly?

--

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3 | Operate the rear power window from the main power window switch. Do the rear windows operate properly? | -- | Go to Step 4 | Go to Power Windows Inoperative - All
4 |

1. Disconnect the inoperative front power window motor.
2. Connect a test lamp to a good ground.
3. Probe the power window motor up circuit at the power window motor harness connector.
4. Activate the power window switch in the up direction.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 7

5 |

1. With the test lamp still connected to a good ground, probe the power window motor down circuit at the power window motor harness connector.
2. Activate the power window switch in the down direction.

Does the test lamp illuminate?

--

Go to Step 6

Go to Step 8

6 |

1. Connect a test lamp between the power window motor up and down circuits at the power window motor harness connector.
2. Activate the power window switch in the up and down directions.

Does the test lamp illuminate in both directions?

--

Go to Step 10

Go to Step 9

7 | Open or short to ground. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 9
8 | Test the power window motor down circuit for high resistance, an open or short to ground. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 10
9 | Inspect for poor connections at the main power window switch. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 11
10 | Inspect for poor connections at the power window motor. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 12
11 | Replace the main power window switch. Did you complete the replacement? | -- | Go to Step 13 | --
12 | Replace the power window motor. Did you complete the replacement? | -- | Go to Step 13 | --
13 | Operate the system in order to verify the repair Did you correct the condition? | -- | System OK | Go to Step 2