Seat Switch
Figure 52
G423828
Seat switch harness
connector
The seat switch and its electrical connector are components of the operator seat
assembly. The seat switch is a normally open proximity switch that closes when the
operator is on the seat. Testing can be done without removing the seat from the
machine.
Testing the Seat Switch
1. Park the machine on a level surface, lower any attachments to the ground,
engage the parking brake, and remove the key from the ignition.
2. Switch the main circuit breaker to the O
FF position, to de-energize the electrical
system.
3. Tilt the seat forward and secure it in place with the seat prop.
4. Locate and disconnect the wire harness from the seat switch connector.
5. Check the continuity of the switch by connecting a multimeter (ohms setting)
across the connector terminals.
6. With no pressure on the seat, there should be no continuity between the seat
switch terminals.
7. Press directly onto the seat switch through the seat cushion. There should be
continuity as the seat cushion approaches the bottom of its travel.
8. Replace the switch if necessary.
9. If the switch tests correctly and a circuit problem still exists, check the wire
harnesses; refer to 9 Appendix A, page 9–1.
Electrical System: Seat Switch Page 6–30 4520P
09.40003Rev 00
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