Power Windows Inoperative - All. Buick LeSabre 2001

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2001 🢒 LeSabre 🢒 Body and Accessories 🢒 Doors 🢒 Power Windows Inoperative - All

Diagnostic Aids

Each door module has a separate battery positive voltage circuit that is used exclusively for power window motor operation, however, the circuits are all fed by the same PWR WDO circuit breaker located in the rear fuse block. These circuits are in harness connector C3 of each front door module and harness connector C2 of each rear door module. Refer to Power Window Schematics and Door Control Module Schematics . If this circuit opens at a point where the separate branches are all joined, all power windows will be inoperative. A short to ground in this circuit will open the PWR WDO circuit breaker, which will also cause all power windows to be inoperative.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

Determines if this is the correct chart for the symptom.

This step determines if a door module is internally shorted to ground, or the door module battery positive voltage circuit is shorted to ground.

Step	Action	Yes	No
Schematic Reference: and Power Window Schematics and Door Control Module Schematics Connector End View Reference: Power Door Systems Connector End Views DEFINITION: All of the power windows simultaneously fail to operate.
1	Did you perform the Door Systems Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Door Systems
2	Turn ON the ignition, with the engine OFF. Attempt to operate the power windows from both the driver door switch assembly, and, from each one of the window switches mounted to the passenger doors. Does any window operate?	Go to Symptoms - Doors	Go to Step 3
3	Remove the PWR WDO circuit breaker from the rear fuse block. Probe the PWR WDO circuit breaker battery positive voltage supply terminal of the rear fuse block with a test lamp connected to ground. Does the test lamp illuminate?	Go to Step 4	Go to Step 9
4	Connect the test lamp between the two terminals of the power window circuit breaker connector in the rear fuse block. Does the test lamp illuminate?	Go to Step 6	Go to Step 5
5	Operate any one of the power window switches while observing the test lamp. Does the test lamp illuminate?	Go to Step 13	Go to Step 8
6	Disconnect each door module, one at a time, while observing the test lamp. Does the test lamp go out after any module is disconnected?	Go to Step 7	Go to Step 10
7	Inspect for poor connections at the harness connector of the suspect door module. 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 14	Go to Step 11
8	Inspect for poor connections at the harness connector of the rear fuse block. 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 14	Go to Step 12
9	Repair the open in the PWR WDO circuit breaker battery positive voltage supply circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 14	--
10	Repair the short to ground in the battery positive voltage circuit (associated with front door modules connector C3 and rear door modules connector C2) between the rear fuse block and the door modules. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 14	--
11	Replace the inoperative door module. Refer to Door Control Module Replacement . Did you complete the replacement?	Go to Step 14	--
12	Replace the rear fuse block. Refer to Rear Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the replacement?	Go to Step 14	--
13	Replace the power window circuit breaker. Did you complete the replacement?	Go to Step 14	--
14	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2