Wiper Control Relay: Inspection

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

Disconnect the connector from the wiper control relay.
Connect the positive (+) lead from the battery to terminal 8 and the negative (-) lead to terminal 6. Connect the positive (+) lead from the voltmeter to terminal 3 and the negative (-) lead to ground.

Fig 1: Connecting Terminals To Ground
Courtesy of SUBARU OF AMERICA, INC.
Measure the voltage when the wiper relay is operated.

Fig 2: Measuring Voltage When Wiper Relay Is Operated
Courtesy of SUBARU OF AMERICA, INC.

If operation is not as specified, replace the switch.