Headlight Switch
The headlight switch is used as an input for the
TEC--5002controllertoprovidepowerfortheheadlights
and taillights. The headlight switch is located on the op-
erator side of the control console.
Testing
1.
Before disconnecting the headlight switch for test-
ing, the switch and its circuit wiring should be tested as
a TEC controller input with the Info Center Diagnostic
Display (see Info Center Display in this section).
2
2.
switch andcircuit wiring arefunctioning correctly,nofur-
If the Diagnostic Display verifies that the headlight
1
ther switch testing is necessary.
3.
light switch and circuit wiring are not functioning cor-
rectly, test headlight switch.
If the Diagnostic Display determines that the head-
Figure 79
1.
Console arm
2.
Headlight switch
4.
ignition switch.
Make sure ignition switch is OFF. Remove key from
4
1
5
2
6
5.
headlight switch (see Console Arm Disassembly in the
Service and Repairs section of Chapter 7 -- Chassis).
Remove inside control arm cover to gain access to
6.
connector from switch.
Locate headlight switch and unplug wire harness
3
BACK OF SWITCH
7.
80.
the chart to the right. With the use of a multimeter (ohms
setting),theswitchfunctionsmaybetestedtodetermine
whether continuity exists between the various terminals
foreachposition.Verifycontinuitybetweenswitchtermi-
nals. Replace switch if testing identifies a faulty switch.
The switch terminals are marked as shown in Figure
The circuit logic of the headlight switch is shown in
Figure 80
SWITCH
NORMAL
CIRCUITS
OTHER
CIRCUITS
POSITION
OFF
ON
2 + 3
2 + 1
5 + 6
5 + 4
8.
testing.
Connect the harness connector to the switch after
9.
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).
10.Install
inside control arm cover (see Console Arm
Assembly in the Service and Repairs section ofChapter
-- Chassis).
7
Electrical System
Page 5 -- 44
Groundsmaster 5900/5910
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