How the Circuit Works: Notes
WARNING: This page is about a different car, the 2011 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
The wiper/washer system is part of the multiplex integrated control system. The driver's MICU and the wiper/washer switch are the main operation controls of the wiper/washer system. The rear window washer motor relay, windshield washer motor relay, windshield wiper high/low relay, and windshield wiper motor relay are incorporated in the under-hood fuse/relay box.
Testing the multiplex components and reading Diagnostic Trouble Codes (DTCs) can be done by using an HDS Tester. The windshield wiper motor and windshield/rear window washer motor can be tested manually without an HDS Tester.
Refer to the WIPERS/WASHERS for specific tests and troubleshooting procedures.