Seat Switch
The seat switch is normally open and closes when the
operator isoccupying theseat.This switch isused asan
input for the TEC--5002 controller. The seat switch and
its electrical connector are located in the seat assembly.
If the traction system or PTO switch is engaged when
the operator raises out of the seat, the engine will stop.
Testing of the switch can be done without seat removal
by disconnecting the switch wire from the machine wire
harness (Fig. 32).
2
1
Testing
1.
Before disconnecting the seat switch for testing, the
switch and its circuit wiring should be tested as a
TEC--5002 input with the Diagnostic Display (see Diag-
nostic Display in the Troubleshooting section of this
chapter). If the Diagnostic Display verifies that the seat
switch andcircuit wiring arefunctioning correctly,nofur-
ther switch testing is necessary. If, however, the Display
determinesthattheseatswitchandcircuitwiringarenot
functioning correctly, proceed with test.
Figure 32
1.
2.
Seat switch electrical connector
Operator seat
2.
Make sure ignition switch is OFF. Remove key from
ignition switch.
3.
Disconnect seat switch connector from the machine
wire harness connector.
4.
multimeter (ohms setting) across the seat switch con-
nector terminals.
Check the continuity of the switch by connecting a
5.
continuity between the seat switch terminals.
With no pressure on the seat, there should not be
6.
cushion. There should be continuity as the seat cush-
Press directly onto the seat switch through the seat
ion approaches the bottom of its travel.
7.
place seatswitch (see Operator Seat Service intheSer-
vice and Repairs section of Chapter 7 -- Chassis).
If testing determines that seat switch is faulty, re-
8.
Connect seat switch connector to wire harness con-
nector after testing is complete.
Electrical System
Page 5 -- 28
Groundsmaster 4100--D/4110--D
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