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Groundsmaster 4000--D/4010--D Page 5 -- 41 Electrical 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. 46).
Testing
1. Make sure ignition s witch 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. The switch terminals are marked as shown in Figure
47. The circuit logic of the wiper/washer switch is shown
inthechartbelow.Withtheuseofamultimeter(ohms
setting), theswitch functions maybe testedtodetermine
whether continuity exists between the various terminals
foreach position. Verifycontinuity between switch termi-
nals. Replace wiper/washer switch if testing identifies a
faulty switch.
SWITCH
POSITION
CLOSED
CIRCUITS
OPEN
CIRCUITS
OFF 2+1 5+6
WIPER ON 2+3 5+6
WASHER and
WIPER ON
(MOMENTARY)
2+3
5+6
2+1
5. If switch tests correctly and circuit problem still ex-
ists, check wire harness (see Electrical Schematics and
Wire Harness Drawings in Chapter 10 -- Foldout Draw-
ings).
6. Connect the wire harness connector to theswitch af-
ter testing.
7. Install switch plate to cab headliner after switch test-
ing is complete.
1. Cab headliner 2. Wiper/washer switch
Figure 46
1
2
Figure 47
BACK OF SWITCH
Electrical
System