Fuses
Identification and Function
Testing the Fuses
Field Pro® 6040
22267SL Rev A
The individual control circuits are protected by a variety of fuses (F1 – F4) found
in the fuse block located behind the operator cushion.
g415137
1.
Fuse block
•
Fuse F1 (15 A) protects the unswitched power supply to the key switch
•
Fuse F2 (10 A) protects the unswitched power to the hour meter/controller,
key switch, and the telematics connector
•
Fuse F3 (15 A) protects the start relay circuit
•
Fuse F4 (20 A) protects the charge relay circuit
1. Turn the key switch to the O
2. With the fuse installed in the fuse holder/block, use a multimeter to check
that 12 VDC exists at both of the terminal test points on the fuse. If 12 VDC
exists at 1 of the fuse test points but not at the other, the fuse is damaged.
3. Set the key switch to the O
switch.
4. Remove the fuse from the fuse block and use a multimeter (ohms setting) to
check that the fuse has continuity across the fuse terminals.
5. If the fuse tests correctly and a circuit problem still exists, check the wire
harness; refer to
Appendix A (page
Figure 66
position (do not start the engine).
N
position and remove the key from the key
FF
A–1).
Page 6–7
Electrical System: Testing the Electrical Components