Rear Wiper

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Check with Subaru Select Monitor

Step	Check	Yes	No
1 CHECK INPUT OF REAR WIPER SWITCH. Check the input from body integrated unit using the Subaru Select Monitor. Prepare the Subaru Select Monitor kit. Turn the ignition switch to ON. On «System Selection Menu» display, select {Integ. unit mode}. Select the {Current Data Display & Save}. Check the input of the rear wiper switch.	Is the input normal?	Go to step 4 .	Go to step 2 .
2 CHECK HARNESS. Disconnect the ground cable from battery. Disconnect the connector of body integrated unit. Disconnect the connector from wiper switch. Measure the resistance between body integrated unit and wiper switch. Connector & terminal (B281) No. 18 - (B70) No. 10: (B281) No. 27 - (B70) No. 13: (B281) No. 28 - (B70) No. 12:	Is the resistance less than 10 Ω?	Go to step 3 .	Repair the harness between the body integrated unit and wiper switch.
3 CHECK INPUT VOLTAGE OF BODY INTEGRATED UNIT. Connect the ground cable to battery. Turn the ignition switch to ACC. Check the input voltage of body integrated unit. Connector & terminal (B280) No. 7 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 4 .	Check the harness and fuse.
4 CHECK OUTPUT OF BODY INTEGRATED UNIT. When the rear wiper switch is operated, check the output using the Subaru Select Monitor. Turn the ignition switch to ON. Operate the rear wiper switch and set to each position of ON and INT. At this time, check the body integrated unit output.	When set to ON, is ON output continuous? When set to INT, is ON/OFF output repeated? (INT OFF time (when vehicle parked): 12 seconds)	Check the rear wiper motor circuit.	Replace the body integrated unit. < Refer to BODY INTEGRATED UNIT . >

Check rear wiper motor circuit

Step	Check	Yes	No
1 CHECK POWER SUPPLY CIRCUIT OF THE REAR WIPER MOTOR. Disconnect the harness connector of the rear wiper motor. Turn the ignition switch to ACC. Measure the voltage between the rear wiper motor harness connector terminal and chassis ground. Connector & terminal (D43) No. 3 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 2 .	Check the fuse (No. 23 in fuse & relay box). Check the fusible link (No. 7 in main fuse box).
2 CHECK GROUND CIRCUIT OF REAR WIPER MOTOR. Turn the ignition switch to OFF. Measure the resistance between the rear wiper motor harness connector terminal and chassis ground. Connector & terminal (D43) No. 4 - Chassis ground:	Is the resistance less than 10 Ω?	Go to step 3 .	Repair the open circuit of the rear wiper motor ground circuit.
3 CHECK HARNESS BETWEEN BODY INTEGRATED UNIT AND REAR WIPER MOTOR. Turn the ignition switch to OFF. Disconnect the harness connector of body integrated unit. Disconnect the harness connector of the rear wiper motor. Measure the resistance between the harness connector terminals of the body integrated unit and rear wiper motor. Connector & terminal (B279) No. 8 - (D43) No. 1: (B279) No. 9 - (D43) No. 2:	Is the resistance less than 10 Ω?	Go to step 4 .	Repair the open circuit of the harness between body integrated unit and rear wiper motor.
4 CHECK INPUT VOLTAGE OF BODY INTEGRATED UNIT. Turn the ignition switch to ACC. Check the input voltage of body integrated unit. Connector & terminal (B279) No. 21 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 5 .	Check the harness and fuse.
5 CHECK OUTPUT OF BODY INTEGRATED UNIT. Connect the harness connector of body integrated unit. Disconnect the connector of the rear wiper motor. Turn the ignition switch to ACC. Measure the voltage between rear wiper motor connector and chassis ground. Connector & terminal (D43) No. 2 (+) - Chassis ground (-):	Is the voltage less than 1.5 V when the rear wiper switch is OFF, and is the voltage 10 V or more when the rear wiper switch is ON?	Go to step 6 .	Replace the body integrated unit. < Refer to BODY INTEGRATED UNIT . >
6 CHECK OPERATION OF REAR WIPER MOTOR. Remove the rear wiper motor. Check the rear wiper motor. < Refer to INSPECTION , Rear Wiper Motor. >	Does the rear wiper motor rotate normally?	End.	Replace the rear wiper motor.