Headlamp Washer Switch: Testing and Inspection
ON-VEHICLE INSPECTION1. INSPECT HEADLIGHT CLEANER SWITCH ASSEMBLY
a. Measure the resistance according to the value(s) in the table.
b. Inspect illumination operation.
1. Connect the positive (+) lead from the battery to the terminal H18-2 and negative (-) lead to the terminal H18-1, then check that the illumination comes on.