Wipers Inoperative - All Modes

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Master Electrical Component List
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Turn the ignition to the ON position. Attempt to operate the wipers in each mode. Are the wipers inoperative in all modes.	Go to Step 3	Go to Testing for Intermittent Conditions and Poor Connections
3	Disconnect the windshield wiper motor. Using a test lamp connected to ground, probe the windshield wiper motor low speed circuit. Turn the ignition to the ON position. Turn the windshield wipers to a low speed. Does the test lamp illuminate?	Go to Step 4	Go to Step 5
4	Test for a poor connection or an open in the ground circuit of the windshield wiper motor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 19	Go to Step 6
5	Test for a short to ground in the wiper motor low speed supply circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 19	Go to Step 8
6	Test for a short to ground in the wiper motor high speed supply circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 19	Go to Step 7
7	Test for a short to ground in the windshield wiper motor park switch signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 19	Go to Step 14
8	Connect the windshield wiper motor. Remove the wiper high relay from the underhood fuse block. Using a test lamp connected to battery positive voltage, probe the wiper high relay switched input circuit. Turn the wiper switch OFF. Turn the ignition to the OFF position. Does the test lamp illuminate?	Go to Step 12	Go to Step 9
9	Remove the WIPER relay. Using a test lamp connected to battery positive voltage, probe the ground circuit of the WIPER relay. Does the test lamp illuminate?	Go to Step 10	Go to Step 15
10	Using a test lamp connected to ground, probe the WIPER/WS fuse circuit of the WIPER relay. Does the test lamp illuminate?	Go to Step 11	Go to Step 16
11	Replace the WIPER relay. Refer to Relay Replacement (Within an Electrical Center) or Relay Replacement (Attached to Wire Harness) . Do the windshield wipers operate normally?	Go to Step 19	Go to Step 16
12	Disconnect the windshield wiper/washer switch. Install a jumper between the ground circuit and the windshield wiper switch low signal circuit at the windshield wiper/washer switch connector. Turn the ignition to the ON position. Do the windshield wipers operate normally?	Go to Step 17	Go to Step 13
13	Test for a poor connection or an open in the ground circuit of the windshield wiper/washer switch. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 19	Go to Step 18
14	Replace the windshield wiper motor. Refer to Wiper Motor Replacement . Did you complete the replacement?	Go to Step 19	-
15	Repair a poor connection or an open in the ground circuit of the WIPER relay. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair?	Go to Step 19	-
16	Replace the underhood fuse block. Refer to Underhood Electrical Center or Junction Block Replacement . Did you complete the replacement?	Go to Step 19	-
17	Replace the windshield wiper/washer switch. Refer to Wipers/Washer Switch Replacement . Did you complete the replacement?	Go to Step 19	-
18	Replace the body control module (BCM). Refer to Control Module References for replacement, setup and programming. Did you complete the replacement?	Go to Step 19	-
19	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3