Schematic Reference: Power Window Schematics

Did you review the Power Windows Description and Operation?

Go to Step 2

Go to Symptoms - Doors

Verify that the inoperative driver door power window fault is present.

Does the driver door power window operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Turn the ignition off.
2. Disconnect the LF window regulator motor.
3. Turn on the ignition, with the engine off.
4. Probe the battery positive voltage circuit of the LF window regulator motor with a test lamp that is connected to good ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 13

Connect a test lamp between the battery positive voltage circuit of the LF window regulator motor and the ground circuit of the LF window regulator motor.

Does the test lamp illuminate?

Go to Step 5

Go to Step 14

Probe the power window switch express signal circuit of the LF window regulator motor with a test lamp that is connected to good ground.

Does the test lamp illuminate?

Go to Step 6

Go to Step 8

1. Probe the power window motor left front up control circuit of the LF window regulator motor with a test lamp that is connected to good ground.
2. Activate the LF window switch to the UP position.

Does the test lamp illuminate?

Go to Step 7

Go to Step 9

1. Probe the power window motor left front down control circuit of the LF window regulator motor with a test lamp that is connected to good ground.
2. Activate the LF window switch to the DOWN position.

Does the test lamp illuminate?

Go to Step 11

Go to Step 10

Test the power window switch express signal circuit of the LF door switch for a short to voltage, a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 12

Test the power window motor left front up control circuit for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition.

Go to Step 17

Go to Step 12

Test the power window motor left front down control circuit for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition.

Go to Step 17

Go to Step 12

Inspect for poor connections at the LF power window regulator motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 15

Inspect for poor connections at the LF door switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 16

Repair the open in the battery positive voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

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Repair the open in the ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

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Replace the LF power window regulator motor. Refer to Front Side Door Window Regulator Replacement .

Is the repair complete?

Go to Step 17

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Replace the LF door switch. Refer to Power Accessory Switch Panel Replacement .

Is the repair complete?

Go to Step 17

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1. Reprogram the LF window regulator motor. Refer to Window Motor Programming - Express Function .
2. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2