Wiper Switch: Testing and Inspection
INSPECT WIPER AND WASHER SWITCH CONTINUITY
WIPER OFF
WIPER INT
WIPER LO
WIPER HI
WASHER
If continuity is not as specified, replace the switch.
INSPECT WIPER AND WASHER SWITCH RESISTANCE
Inspect the switch resistance between terminals.
If resistance value is not as specified, replace the switch.
INSPECT WIPER AND WASHER SWITCH CIRCUIT
Disconnect the switch and wiper relay connector, inspect each connector on the wire harness side.
If continuity is not as specified, replace the switch.