How the Circuit Works: Notes

The wiper/washer system is a multiplex controlled system. The MICU and wiper/washer switch are the main operation controls of the front wiper/washer system.

Testing the MICU and reading Diagnostic Trouble Codes (DTCs) within the multiplex integrated control system can be done using an HDS Tester. The windshield wiper motor and washer motor can be tested manually without an HDS Tester.

Refer to the WIPERS/WASHERS for specific tests and troubleshooting procedures.