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Groundsmaster 5900/5910 Page 5 -- 49 Electrical System
Seat Switch
The s eat switch is normally open and closes when the
operator is on the seat. The seat switch is an input for the
TEC--5002 controller. If the traction system or PTO
switch is engaged when the operator raises out of the
seat, the traction system or PTO operation will cease.
The seat switch and its electrical connector are located
in the seat assembly.
Testing
1. Before disconnecting the seat switch for testing, 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 D isplay verifies that the seat switch
and circuit wiring are functioning correctly, no further
switch testing is necessary.
3. If the Diagnostic Display determines that the seat
switch and circuit wiring are not functioning correctly,
test seat switch.
NOTE: Testing of the seat switch can be done without
seat removal by disconnecting the seat wire from the
machine wiring harness (Fig. 89).
4. Make sure ignition switch is OFF. Remove key from
ignition switch.
5. Disconnect seat switch electrical connector from the
machine wire harness.
6. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the connector termi-
nals.
7. With no pressure on the seat, there should be no
continuity (infinite resistance) between the seat switch
terminals.
8. Press directly onto the seat switch through the seat
cushion. There should be continuity (zero resistance)
as the seat cushion approaches the bottom of its travel.
9. If testing determines that seat switch is faulty, re-
place seat switch(see Operator Seat Service in the Ser-
vice and Repairs section of Chapter 7 -- Chassis).
10.Connect switch connector to the machine wire har-
ness.
11.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).
1. Electrical connector 2. Seat switch wire
Figure 89
1
2
Electrical
System