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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

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