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Groundsmaster 5900/5910Page 5 -- 44Electrical System
Headlight Switch
The headlight switch is used as an input for the
TEC--5002controllertoprovidepower for the headlights
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. If the Diagnostic Display verifies that the headlight
switch and circuit wiringarefunctioning correctly,nofur-
ther switch testing is necessary.
3. If the Diagnostic Display determines that the head-
light switch and circuit wiring are not functioning cor-
rectly, test headlight switch.
4. Make sure ignition switch is OFF. Remove key from
ignition switch.
5. Remove inside control arm cover to gain access to
headlight switch (see Console Arm Disassembly in the
Service and Repairs section of Chapter 7 -- Chassis).
6. Locate headlight switch and unplug wire harness
connector from switch.
7. The switch terminals are marked as shown in Figure
80. The circuit logic of the headlight switch is shown in
the chart to the right. With the use of a multimeter (ohms
setting),theswitchfunctions may betested to determine
whether continuity exists between the various terminals
foreachposition.Verifycontinuity betweenswitchtermi-
nals. Replace switch if testing identifies a faulty switch.
8. Connect the harness connector to the switch after
testing.
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 inthe Service and Repairs section of Chapter
7 -- Chassis).
1. Console arm 2. Headlight switch
Figure 79
1
2
Figure 80
12
4
3
56
BACK OF SWITCH
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
OFF 2+3 5+6
ON 2+1 5+4