Wiper Switch Test

Unplug multifunction switch connector under steering column. Using a DVOM, test between terminals as specified in WIPER SWITCH TEST table. See Fig 1 . Replace switch if readings are not as specified.

WIPER SWITCH TEST

Switch Position

Terminals

Resistance: K/Ohms

OFF

590 To 993

103.3

589 To 993

47.6

LOW

589 To 993

4.08

INT

589 To 993

11.33

HIGH

589 To 993

WASH

590 To 993

INT ⁽¹⁾

MIN

590 To 993

3.3

MAX

590 To 993

103.3

⁽¹⁾	Rotate INT (interval) knob from minimum to maximum. Resistance should gradually increase from 3.3 k/ohms (MIN) to 103.3 k/ohms (MAX). All measurements should be within 10% of specifications.

Fig 1: Wiper Switch Terminal ID

Courtesy of FORD MOTOR CO.