Wiper Switch Continuity Test

Check continuity between switch terminals as shown in illustration. Either a self powered test light or an ohmmeter can be used to test a standard switch. An ohmmeter must be used to test a switch with the intermittent system. To detect marginal operation of switch, rotate control knob while each reading is being taken. If switch does not exhibit continuity as shown or poor continuity exists, replace switch.

Fig 1: PIN-TYPE SWITCH (2-SPEED)

Courtesy of FORD MOTOR CO.

Switch Position	Terminals
Off (Park)	B-C, A-H, F-G
Low	C-D, A-G-H
High	D-E, A-G-H
Wash	W1-W2

Fig 2: BLADE-TYPE SWITCH (2-SPEED)

Courtesy of FORD MOTOR CO.

Switch Position	Terminals
Off (Park)	C-D, A-B
Low	A-B-C
High	A-B-E
Wash	W1-W2

Intermittent Switch Position

Intermittent Terminals

Off (Park)

A-B, D-E

Low

A-B, D-E-F

High

D-E-F, A-B-C

Intermittent

⁽¹⁾D-E-F, A-B, D-E

Wash

W1-W2

⁽¹⁾	Variable resistance between terminals D-E should be minimum 100-900 ohms and maximum 5600-8400 ohms.