User manual

Groundsmaster 4000--D/4010--DPage 5 -- 30Electrical System
Windshield Wiper/Washer Switch (Groundsmaster 4010--D)
The windshield wiper/washer switch is used to control
operation of the windshield wiper and washer pump on
the Groundsmaster 4010--D. The windshield wiper/wa-
sher switch is located in the cab headliner (Fig. 33).
Testing
1. Make sure ignition switch is OFF. Remove key from
ignition switch.
2. Remove switch plate from cab headliner.
3. Locate windshield wiper/washer switch and unplug
wire harness connector from switch.
4. Theswitchterminalsaremarkedas shown inFigure
34.Thecircuitlogicofthewiper/washerswitchisshown
in the chart below. With the use of a multimeter (ohms
setting),theswitchfunctionsmaybetestedtodetermine
whethercontinuityexistsbetweenthe variousterminals
foreachposition.Verifycontinuitybetweenswitchtermi-
nals. Replace w iper/washer switch if testing identifies a
faulty switch.
SWITCH
POSITION
CLOSED
CIRCUITS
OPEN
CIRCUITS
OFF NONE ALL
WIPER ON 2+3 5+6
WASHER ON 2+3
5+6
NONE
5. If switch tests correctly and circuit problem still ex-
ists,checkwireharness(seeElectricalSchematicsand
Wire Harness Drawings in Chapter 10 -- Foldout Draw-
ings).
6. Connectthewireharnessconnectortotheswitchaf-
ter testing.
7. Installswitch plate to cab headliner after s witch test-
ing is complete.
1. Cab headliner 2. Wiper/washer switch
Figure 33
1
2
Figure 34
12
4
3
56
BACK OF SWITCH