Diagnostic Aids

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Check for poor connection at the BCM. Inspect harness connectors for backed out terminals, improper terminal mating, broken connectors locks, improperly formed or damaged terminals and poor terminal-to-wire connection, terminal crimped over wire insulation and not conductors.
If circuit 2445 is open, the rear wipers will be inoperative.
If circuit 2445 is shorted to ground, the rear wipers will always be ON.
Inspect wiring harness for damage. Check for broken or chaffed insulation.
If fault is suspected to be intermittent, wiggling harness wiring may help in locating fault.

DTC B3722

Step	Action	Yes	No
Connector End View Reference: Master Electrical Component List in Wiring Systems
1	Did you perform the Wiper/Washer Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Wiper/Washer
2	Turn ON the ignition, with the engine OFF. With a scan tool, command the rear wiper relay ON and OFF under body control module special functions. Does relay follow command?	Refer to Diagnostic Aids	Go to Step 3
3	Turn OFF the ignition. Remove the rear wiper relay in underhood fuse block (UHFB). Turn ON the ignition, with the engine OFF. Connect the test lamp between rear wiper relay control circuit and the rear wiper motor switch at the rear wiper relay. Using a scan tool, command rear wiper relay ON and OFF. Does the test lamp illuminate?	Go to Step 4	Go to Step 5
4	Does the test lamp follow the scan tool command?	Go to Step 13	Go to Step 8
5	Connect the test lamp between the rear wiper motor switch and ground at the rear wiper relay location. Does the test lamp illuminate?	Go to Step 6	Go to Step 7
6	Turn OFF the ignition. Disconnect the BCM connector C3. Check the continuity on the rear wiper relay control circuit. Is there continuity in circuit 2445?	Go to Step 12	Go to Step 11
7	Check for open RR wiper 15 A fuse. Is the fuse open?	Go to Step 10	Go to Step 9
8	Test the rear wiper relay control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 12
9	Repair an open in the rear wiper motor switch circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 14	-
10	Repair a short to ground in the rear wiper motor switch circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 14	-
11	Repair an open in the rear wiper relay control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 14	-
12	IMPORTANT: Perform the programming or set up procedure for the replaced control module if required. Replace the BCM. Refer to Body Control Module Replacement in Body Control System for applicable replacement procedure.Did you complete the replacement?	Go to Step 14	-
13	Replace the rear wiper relay. Refer to Relay Replacement (Within an Electrical Center) or Relay Replacement (Attached to Wire Harness) in Wiring Systems. Did you complete the replacement?	Go to Step 14	-
14	Use the scan tool 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