Textron JACOBSEN GP400, Technical/Repair Manual

Page: 93 / 354

ELECTRICAL
4252490-Rev A 4-41
4
Fuses Test
See Figure 4-17.
NOTE
This procedure applies to the following fuses:
• 10A fuse (x3)
• 15A fuse
• 20A fuse
• 40A fuse
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Set the meter to read ohms.
3. Touch meter leads to each other and confirm a
resistance value of 0.0 ohms.
4. Remove fuse. (See “Fuses” on page 4-60.)
7
Figure 4-17
5. Measure the resistance between terminals (1 and 2).
Is the resistance value 0.02 ohm or less?
YES The fuse is good.
NO The fuse is faulty; replace the fuse.
Relays Test
See Figure 4-18.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Remove relay. (See “Relays” on page 4-60.)
3. Set the meter to read ohms.
4. Touch meter leads to each other and confirm a
resistance value of 0.0 ohms.
Figure 4-18
5. Measure the resistance between terminal 30 (1) and
terminal 87a (3).
Is the resistance value 0.02 ohm or less?
YES Proceed to step 6.
NO The relay is faulty; replace the relay.
6. Using a 12-volt DC power source, connect the
positive output to terminal 86 (2) and connect the
negative output to terminal 85 (5).
7. Measure the resistance between terminal 30 (1) and
terminal 87 (4).
Is the resistance value 0.02 ohm or less?
YES The relay is good.
NO The relay is faulty; replace the relay.
Required Tools or Equipment
Digital Multimeter or Ohmmeter
TN2742
1
2
Required Tools or Equipment
• Digital Multimeter or Ohmmeter
• 12-Volt DC Power Source
5
4
TN1531
1
2
3