Diagnostic Aids

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

DTC B3922

Step	Action	Yes	No
Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	Install a scan tool. Turn the ignition to the ON position. Using a scan tool observe the Wiper Washer Switch parameter in the input list. Rotate the wiper washer switch through all the positions. Does the scan tool display the correct positions?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Turn the ignition to the OFF position. Disconnect the body control module (BCM) connector C3. At the BCM connector C3, install a jumper between ground and ground supply circuit to the windshield wiper/washer switch. Turn the wiper washer switch to the off position. Using a test lamp connected to ground, probe the wiper switch low signal circuit at the BCM connector C3. Does the test lamp illuminate?	Go to Step 7	Go to Step 4
4	Remove the ground jumper. Using a test lamp connected to battery positive voltage, probe the wiper switch low signal circuit at the BCM connector C3. Does the test lamp illuminate?	Go to Step 8	Go to Step 5
5	Install a jumper between ground and the ground supply circuit to the wiper/washer switch. Using a test lamp connected to battery positive voltage, probe the wiper switch low signal circuit at the BCM connector C3. Turn the wiper switch to all of the low settings. Does the test lamp illuminate at each switch position?	Go to Step 9	Go to Step 6
6	Test for a poor connection or an open in the wiper switch low signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 11	Go to Step 10
7	Repair a short to battery positive voltage in the wiper switch low signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 11	-
8	Repair a short to ground in the wiper switch low signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 11	-
9	Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming. Did you complete the replacement?	Go to Step 11	-
10	Replace the windshield wiper/washer switch. Did you complete the replacement?	Go to Step 11	-
11	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	Go to Step 2	System OK