Turn Signal Switch
The turn signal switch is used as an input for the
TEC--5002 controller to provide power for the turn sig-
nals. The switch is located on the steering tower (Fig.
81).
2
Testing
1.
Before disconnecting the turn signal 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).
1
2.
If the Diagnostic Display verifies that the turn signal
switch andcircuit wiring arefunctioning correctly,nofur-
ther switch testing is necessary.
Figure 81
2.
3.
nal switch and circuit wiring are not functioning correct-
IftheDiagnosticDisplaydeterminesthattheturnsig-
1.
Steering column
Turn signal switch
ly, test turn signal switch.
4
1
5
2
6
4.
ignition switch.
Make sure ignition switch is OFF. Remove key from
5.
Tower Disassembly in the Service and Repairs section
of Chapter 7 -- Chassis).
Remove front steering tower cover (see Steering
3
6.
Locate turn signal switch and unplug wire harness
connector from switch.
BACK OF SWITCH
7.
82.
The switch terminals are marked as shown in Figure
The circuit logic of the turn signal switch is shown in
Figure 82
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.
SWITCH
CLOSED
OPEN
POSITION
CIRCUITS
CIRCUITS
RIGHT
TURN
2 + 3
5 + 6
2 + 1
5 + 4
8.
testing.
Connect the harness connector to the switch after
NEUTRAL
NONE
ALL
LEFT
TURN
2 + 1
5 + 4
2 + 3
5 + 6
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
frontsteeringtowercover(seeSteeringTower
Assembly in the Service and Repairs section ofChapter
-- Chassis).
7
Groundsmaster 5900/5910
Page 5 -- 45
Electrical System
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